lvm practice commands
1 lsblk
2 fsck
3 fsck /sda
4 fsck /sda2
5 fsck /dev//sda2
6 fsck /dev//sda1
7 xfs_repair
8 xfs_repair /dev/sda2
9 xfs_repair /dev/sda1
10 umount /dev/sda2
11 umount /dev/sda1
12 xfs_repair /dev/sda1
13 fsck /dev/sda
14 e2fsck /dev/sda
15 umount /dev/sda
16 fdisk -l
17 umount /dev/sda2
18 df -h
19 e2fsck /dev/sda2
20 e2fsck /dev/mapper/rhel-root
21 umount /dev/mapper/rhel-root
22 subscription-manager unregister --username=balachavalli
23 subscription-manager unregister --username=balachavali
24 subscription-manager unregister
25 reboot
26 umount /dev/mapper/rhel-root
27 umount /dev/mapper/rhel-home
28 clear
29 c
30 umount /dev/sda
31 umount /dev/sda2
32 umount /dev/sda1
33 fsck /dev/sda1
34 xfs_repair /dev/sda1
35 grub2 install /dev/sda
36 poweroff
37 fsck /dev/sda
38 exit
39 poweroff
40 exit
41 free -m
42 exit
43 systemctl status smb
44 systemctl start smb
45 history
46 history > history2_practice.txt|scp history2_practice apple@192.168.0.100
47 history > history2_practice.txt|scp history2_practice.txt apple@192.168.0.100
48 history > history2_practice.txt|scp history2_practice.txt apple@192.168.0.100:/Users/apple
49 vi /etc/hosts
50 ssh apple
51 ssh apple@apple
52 c
53 cd /ktsamba/
54 ll
55 ls -ldZ /ktsamba/
56 chmod 777 /ktsamba/
57 c
58 vi /etc/samba/smb.conf
59 systemctl start smb
60 systemctl status smb
61 systemctl restart smb
62 systemctl status smb
63 systemctl stop firewalld.service
64 systemctl start firewalld.service
65 c
66 chcon -Rt samba_share_t /ktsamba/
67 ls -ldZ /ktsamba/
68 systemctl restart smb.service
69 systemctl status smb.service
70 systemctl list-unit-files --state=enabled
71 systemctl stop firewalld.service
72 systemctl status smb.service
73 journalctl -xe
74 c
75 vi /etc/samba/smb.conf
76 c
77 systemctl restart smb.service
78 vi /etc/samba/smb.conf
79 systemctl restart smb.service
80 vi /etc/samba/smb.conf
81 systemctl restart smb.service
82 find . -type file -print
83 find . -type file print
84 find . -type print
85 find . -type p
86 find / -type p
87 find / -type b
88 find / -type c
89 find / -type d
90 cd /ktsamba/
91 ll
92 cd /samba
93 cd samba
94 c
95 cd ~
96 exit
97 ip -4 a
98 exit
99 yum repolist all
100 c
101 ll
102 which ping
103 ls -l /usr/sbin/ping
104 chmod 777 ~/.ssh/
105 exit
106 ll
107 ls -l ~/.ssh/
108 ls -l ~/.ssh
109 ls -l .ssh
110 ls -ld .ssh
111 chmod -R 777 ~/.ssh/*
112 ls -ld .ssh
113 ls -ld .ssh/*
114 c
115 exit
116 ll
117 cd vnc/
118 ll
119 cd ..
120 ll
121 cd
122 ll
123 less initial-setup-ks.cfg
124 pwd
125 cat process.sh
126 c
127 free -m
128 echo ~
129 cd ~
130 ll
131 vi ~/process.sh
132 ./process.sh
133 echo $USER
134 vi /process.sh
135 vi process.sh
136 ./process.sh
137 vi ~/.bash_profile
138 exit
139 p
140 vi ~/.bash_profile
141 exit
142 c
143 which rpm
144 which ping
145 locate ping
146 locate limits
147 locate limits.conf
148 limits
149 ps
150 ps -ef
151 kill -9 1
152 kill 1
153 c
154 ps -ef
155 kill -9 20208
156 p
157 c
158 p
159 vi ~/process.sh
160 vi echo.sh
161 ./echo.sh
162 sh echo.sh
163 c
164 sh echo.sh
165 su - bala
166 vi .bash_profile
167 c
168 ifconfig
169 ifconfig enp0s8
170 find / -name limit*
171 vi /etc/security/limits.conf
172 c
173 find / -name limits*
174 vi /etc/security/limits.conf
175 c
176 cd .
177 cd ..
178 mkdir dir1
179 mkdir dir1/dir2
180 cd dir1/dir2
181 cd ~
182 pwd
183 cd dir1/dir2
184 cd /dir1/dir2
185 pwd
186 cd ~/dir1/dir2
187 c
188 cd /dir1/dir2
189 cd .
190 pwd
191 cd ..
192 c
193 tree
194 bin c
195 c
196 df -h
197 cd ..
198 cd /dev
199 ll
200 c
201 cd /mnt
202 ll
203 cd AppStream/
204 ll
205 cd Packages/
206 ll
207 c
208 find . -name httpd
209 find . -name httpd*
210 ps -ef|grep httpd
211 ps -ef
212 ps
213 ps -aux
214 c
215 du -sh *
216 c
217 du -h *
218 du -s *
219 pinfo du
220 du --help
221 su - balu
222 c
223 su - balu
224 systemctl enable --now cockpit.socket
225 exit
226 exit
227 ip -4 a
228 ssh root@balaclient
229 systemctl enable --cockpit
230 systemctl enable -cockpit
231 hostname
232 ssh root@192.168.0.109
233 systemctl reboot
234 c
235 nmtui
236 vi /etc/sysconfig/network-scripts/ifcfg-enp0s3
237 c
238 systemctl status sshd
239 ps
240 systemctl status httpd
241 yum info httpd
242 rpm -q httpd
243 yum install httpd
244 yum history
245 ssh root@192.168.0.108
246 ssh root@balaclient
247 subscription-manager unregister --username=balachavali
248 subscription-manager unregister
249 subscription-manager register --username
250 subscription-manager register --username=balachavali
251 exit
252 journalctl -xe
253 chmod 755 /root/.ssh/id_rsa
254 exit
255 systemctl status cockpit
256 curl https://192.168.122.168:9090 --insecure
257 curl https://192.168.0.109:9090 --insecure
258 https://192.168.0.108:9090
259 curl https://192.168.0.108:9090
260 c
261 systemctl start smb.service
262 systemctl status smb.service
263 c
264 smbpasswd joe
265 passwd joe
266 exit
267 systemctl stop cockpit.service
268 systemctl stop cockpit.socket
269 systemctl start cockpit.socket
270 systemctl disable cockpit.socket
271 systemctl enable cockpit.socket
272 exit
273 ssh root@balaclient
274 c
275 systemctl status cockpit
276 ssh balaclient
277 c
278 ssh balaclient
279 ls -l .ssh/
280 chmod -R 644 .ssh
281 ls -l .ssh
282 c
283 ls -l
284 c
285 ps ux
286 ps --help
287 pinfo ps
288 ps -ejH
289 git config—global color.ui auto
290 su -
291 su - balu
292 usermod -d /home/sumi sumi
293 kill -9 3113
294 fdisk -l
295 partprobe
296 fdisk
297 fdisk -l
298 c
299 partprobe
300 fdisk -l
301 c
302 mkdir /home/software
303 useradd -d /home/software sumi
304 mkdir /software
305 useradd -d /software sumi
306 cd /home/software/
307 ll
308 cd /home/
309 ll
310 userdel -R bala
311 userdel -r bala
312 ll
313 tail /etc/passwd|grep suma
314 tail -5 /etc/passwd
315 mkdir /home/software/sumi
316 usermod -m -d /home/software/sumi sumi
317 usermod -m -d /home/software/sumi/engineer sumi
318 usermod -d /home/software/sumi/engineer sumi
319 c
320 cd
321 cd /home/software/sumi/
322 ll
323 passwd sumi
324 su - sumi
325 userdel -R sumi
326 userdel sumi
327 kill 3362
328 userdel -r sumi
329 kill -9 3362
330 usermod -d /home/sumi sumi
331 su - sumi
332 userdel sumi userdel -r sumi
333 usermod -d /home/sumi sumi
334 mkdir /home/sumi
335 su - sumi
336 c
337 less /etc/login.defs
338 usermod -c "software_engineer" suma
339 grep -E --color 'suma' /etc/passwd
340 grep -E --color 'software_engineer' /etc/passwd
341 grep -E --color yellow 'software_engineer' /etc/passwd
342 grep -E --color=yellow 'software_engineer' /etc/passwd
343 grep -E --color=#f9f9f9 'software_engineer' /etc/passwd
344 c
345 grep -E --color=auto 'software_engineer' /etc/passwd
346 export GREP_COLOR='00;38;5;226'
347 grep -E --color=auto 'software_engineer' /etc/passwd
348 export GREP_COLOR='00;38;5;100'
349 grep -E --color=auto 'software_engineer' /etc/passwd
350 export GREP_COLOR='00;100;100;250'
351 grep -E --color=auto 'software_engineer' /etc/passwd
352 vi ~/.bash_profile
353 c
354 vi ~/.bash_profile
355 exit
356 sudo -i
357 vi ~/.bash_profile
358 source ~/.bash_
359 source ~/.bash_profile
360 exit
361 grep "software*" /etc/passwd
362 exit
363 grep "software*" /etc/passwd
364 vi ~/.bash_profile
365 grep "software*" /etc/passwd
366 source ~/.bash_profile
367 grep "software*" /etc/passwd
368 exit
369 grep "software*" /etc/passwd
370 export GREP_COLOR='00;38;5;226'
371 grep "software*" /etc/passwd
372 export GREP_COLOR='00;38;226;226'
373 grep "software*" /etc/passwd
374 export GREP_COLOR='00;38;226;226'
375 export GREP_COLOR='00;38;0;226'
376 grep "software*" /etc/passwd
377 export GREP_COLOR='00;38;5;226'
378 grep "software*" /etc/passwd
379 c
380 grep "software*" /etc/passwd
381 export GREP_COLOR='00;38;5;100'
382 grep "software*" /etc/passwd
383 export GREP_COLOR='00;100;5;100'
384 grep "software*" /etc/passwd
385 export GREP_COLOR='00;2;5;100'
386 grep "software*" /etc/passwd
387 export GREP_COLOR='00;250;5;100'
388 grep "software*" /etc/passwd
389 export GREP_COLOR='100;250;5;100'
390 grep "software*" /etc/passwd
391 grep "software_engineer" /etc/passwd
392 c
393 grep "software_engineer" /etc/passwd
394 vi ~/.bash_profile
395 grep "software_engineer" /etc/passwd
396 exit
397 grep "software_engineer" /etc/passwd
398 c
399 grep "software_engineer" /etc/passwd
400 grep "/bin/bash" /etc/passwd
401 grep "1005" /etc/passwd
402 grep "x" /etc/passwd
403 grep "nologin" /etc/passwd
404 grep "proc" /etc/passwd
405 c
406 grep "proc" /etc/passwd
407 cd /proc/
408 ll
409 grep "meminfo" /proc/
410 grep "meminfo" /proc/*
411 c
412 userdel -r sumi
413 userdel sumi
414 tail -f passwd
415 tail -5 passwd
416 tail -5 /etc/passwd
417 useradd -d /home/sumi/ suma
418 userdel -r suma
419 rm -i /home/sumi/
420 cd home
421 cd /home
422 ll
423 rm -rf sumi/
424 useradd suma
425 ll
426 passwd suma
427 su - suma
428 drwx------. 4 balu balu 197 Feb 28 21:14 balu
429 drwx------. 3 joe joe 154 Feb 23 16:36 joe
430 drwx------. 7 samba samba 4096 Feb 23 19:02 samba
431 drwxr-xr-x. 3 root root 18 Feb 29 11:41 software
432 drwx------. 3 suma suma 78 Feb 29 11:53 suma
433 drwxr-xr-x. 4 root root 29 Feb 22 14:17 tecmint
434 [suma@balaserver home]$ chown suma:suma software/
435 chown: changing ownership of 'software/': Operation not permitted
436 [suma@balaserver home]$ sudo chown suma:suma software/
437 We trust you have received the usual lecture from the local System
438 Administrator. It usually boils down to these three things:
439 #1) Respect the privacy of others.
440 #2) Think before you type.
441 #3) With great power comes great responsibility.
442 [sudo] password for suma:
443 suma is not in the sudoers file. This incident will be reported.
444 c
445 usermod -aG wheel suma
446 ll
447 su - suma
448 fdisk -l
449 fdisk /dev/sdb
450 fdisk -l
451 mkfs.ext4 /dev/sdb1
452 fdisk -l
453 mkdir /space
454 mount /dev/sdb1 /space
455 df -Th
456 cd /space
457 history
458 history > his.txt
459 less his.txt
460 fdisk -l >format.txt
461 less format.txt
462 df -Th >format.txt
463 less format.txt
464 fdisk -l >> format.txt
465 less format.txt
466 c
467 df -h
468 df -Th
469 df
470 du -sh
471 du -sh /
472 du -sh /mnt
473 du -sh /mnt/*
474 du -sh /mnt
475 du -sh /mnt/*
476 c
477 mount -a
478 vi /etc/fstab
479 umount /space
480 cd ~
481 umount /space
482 mount -a
483 df -Th
484 inode
485 c
486 df -Th
487 lsblk
488 cd /boot
489 ll
490 cd grub2
491 ll
492 vi grub.cfg
493 c
494 cd /
495 ll
496 smbpasswd samba
497 fdisk -l
498 fdisk /dev/sdb
499 pvcreate /dev/sdb2
500 pvs
501 vgcreate volg /dev/sdb2
502 vgs
503 lvcreate -L 500M -n lv0 volg
504 lvs
505 lvcreate -L 500M -n lv1 volg
506 lvs
507 vgs
508 lvdisplay
509 lvdisplay lv1
510 lvdisplay lv0
511 lvdisplay volg
512 mkfs.ext4 /dev/volg/lv0
513 mkfs.ext4 /dev/volg/lv1
514 mkdir lv
515 mkfs.ext4 /dev/volg/lv1 /lv
516 mkfs.ext4 /dev/volg/lv1 lv
517 c
518 mkdir lvv
519 mkfs.ext4 /dev/volg/lv1 lvv
520 cd lvv
521 mkfs.xfs /dev/volg/lv1 lvv
522 mkfs -t ext4 /dev/mapper/volg-lv0
523 mkdir /mnt/stuff
524 mkdir /stuff
525 mount -t ext4 /dev/mapper/volg-lv0 /stuff
526 cd /stuff/
527 ll
528 du -sh *
529 df -h
530 c
531 df -Th
532 c
533 history
534 ll
535 cc
536 c
537 fdisk -l
538 fdisk /dev/sdb
539 df -h
540 umount /space
541 ll
542 df -h
543 mount -a
544 df -h
545 c
546 pvs
547 pvdisplay
548 lvdisplay
549 fdisk -l
550 vgextend volg /dev/sda1
551 vgextend volg /dev/sdb1
552 df -h
553 c
554 fdisk /dev/sdb
555 pvs
556 vgextend volg /dev/sdb3
557 lvextend -L 2G /dev/volg/lv0
558 resize2fs /dev/volg/lv0
559 e2fsck -f /dev/volg//lvo
560 e2fsck -f /dev/volg/lvo
561 pvs
562 lvs
563 pvs
564 fdisk -l
565 fdisk /dev/sdb
566 vgextend volg /dev/sdb4
567 lvextend -L +3G /dev/volg/lv1
568 lvs
569 [root@balaserver ~]# fdisk /dev/sdb
570 Welcome to fdisk (util-linux 2.32.1).
571 Changes will remain in memory only, until you decide to write them.
572 Be careful before using the write command.
573 Command (m for help): n
574 Partition type
575 p primary (2 primary, 0 extended, 2 free)
576 e extended (container for logical partitions)
577 Select (default p): 1
578 Value out of range.
579 p primary (2 primary, 0 extended, 2 free)
580 e extended (container for logical partitions)
581 Select (default p): e
582 Partition number (3,4, default 3): 3
583 First sector (20973568-33554431, default 20973568):
584 Last sector, +sectors or +size{K,M,G,T,P} (20973568-33554431, default 33554431):
585 Created a new partition 3 of type 'Extended' and of size 6 GiB.
586 Command (m for help): n
587 All space for primary partitions is in use.
588 Adding logical partition 5
589 First sector (20975616-33554431, default 20975616): q
590 Value out of range.
591 First sector (20975616-33554431, default 20975616): ^C
592 Command (m for help): q
593 [root@balaserver ~]# fdisk /dev/sdb
594 Welcome to fdisk (util-linux 2.32.1).
595 Changes will remain in memory only, until you decide to write them.
596 Be careful before using the write command.
597 Command (m for help): n
598 Partition type
599 p primary (2 primary, 0 extended, 2 free)
600 e extended (container for logical partitions)
601 Select (default p): p
602 Partition number (3,4, default 3): 3
603 First sector (20973568-33554431, default 20973568): 20973568
604 Last sector, +sectors or +size{K,M,G,T,P} (20973568-33554431, default 33554431): +2G
605 Created a new partition 3 of type 'Linux' and of size 2 GiB.
606 Command (m for help): t
607 Partition number (1-3, default 3): 3
608 Hex code (type L to list all codes): 8e
609 Changed type of partition 'Linux' to 'Linux LVM'.
610 Command (m for help): w
611 The partition table has been altered.
612 Syncing disks.
613 [root@balaserver ~]# pvs
614 PV VG Fmt Attr PSize PFree
615 /dev/sda2 rhel lvm2 a-- 79.00g 0
616 /dev/sdb2 volg lvm2 a-- <2.00g <1.02g
617 [root@balaserver ~]# vgextend volg /dev/sdb3
618 Physical volume "/dev/sdb3" successfully created.
619 Volume group "volg" successfully extended
620 [root@balaserver ~]# lvextend -L 8G /dev/volg/lv
621 /dev/volg/lv0 /dev/volg/lv1
622 [root@balaserver ~]# lvextend -L 8G /dev/volg/lv
623 /dev/volg/lv0 /dev/volg/lv1
624 [root@balaserver ~]# lvextend -L 2G /dev/volg/lv0
625 Size of logical volume volg/lv0 changed from 500.00 MiB (125 extents) to 2.00 GiB (512 extents).
626 Logical volume volg/lv0 successfully resized.
627 [root@balaserver ~]# resize2fs /dev/volg/lv0
628 resize2fs 1.44.6 (5-Mar-2019)
629 Please run 'e2fsck -f /dev/volg/lv0' first.
630 [root@balaserver ~]# e2fsck -f /dev/volg//lvo
631 e2fsck 1.44.6 (5-Mar-2019)
632 e2fsck: No such file or directory while trying to open /dev/volg//lvo
633 Possibly non-existent device?
634 [root@balaserver ~]# e2fsck -f /dev/volg/lvo
635 e2fsck 1.44.6 (5-Mar-2019)
636 e2fsck: No such file or directory while trying to open /dev/volg/lvo
637 Possibly non-existent device?
638 [root@balaserver ~]# pvs
639 PV VG Fmt Attr PSize PFree
640 /dev/sda2 rhel lvm2 a-- 79.00g 0
641 /dev/sdb2 volg lvm2 a-- <2.00g 0
642 /dev/sdb3 volg lvm2 a-- <2.00g 1.50g
643 [root@balaserver ~]# lvs
644 LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert
645 home rhel -wi-ao---- 10.00g
646 lvm1 rhel -wi-a----- 4.00m
647 root rhel -wi-ao---- 65.00g
648 swap rhel -wi-ao---- 4.00g
649 lv0 volg -wi-a----- 2.00g
650 lv1 volg -wi-a----- 500.00m
651 [root@balaserver ~]# pvs
652 PV VG Fmt Attr PSize PFree
653 /dev/sda2 rhel lvm2 a-- 79.00g 0
654 /dev/sdb2 volg lvm2 a-- <2.00g 0
655 /dev/sdb3 volg lvm2 a-- <2.00g 1.50g
656 [root@balaserver ~]# fdisk -l
657 Disk /dev/sda: 80 GiB, 85899280384 bytes, 167772032 sectors
658 Units: sectors of 1 * 512 = 512 bytes
659 Sector size (logical/physical): 512 bytes / 512 bytes
660 I/O size (minimum/optimal): 512 bytes / 512 bytes
661 Disklabel type: dos
662 Disk identifier: 0x2b74ab42
663 Device Boot Start End Sectors Size Id Type
664 /dev/sda1 * 2048 1050623 1048576 512M 83 Linux
665 /dev/sda2 1050624 166742015 165691392 79G 8e Linux LVM
666 /dev/sda3 166742016 167772031 1030016 503M 5 Extended
667 Disk /dev/sdb: 16 GiB, 17179869184 bytes, 33554432 sectors
668 Units: sectors of 1 * 512 = 512 bytes
669 Sector size (logical/physical): 512 bytes / 512 bytes
670 I/O size (minimum/optimal): 512 bytes / 512 bytes
671 Disklabel type: dos
672 Disk identifier: 0xa60bf9e2
673 Device Boot Start End Sectors Size Id Type
674 /dev/sdb1 2048 16779263 16777216 8G 8e Linux LVM
675 /dev/sdb2 16779264 20973567 4194304 2G 8e Linux LVM
676 /dev/sdb3 20973568 25167871 4194304 2G 8e Linux LVM
677 Disk /dev/mapper/rhel-root: 65 GiB, 69793218560 bytes, 136314880 sectors
678 Units: sectors of 1 * 512 = 512 bytes
679 Sector size (logical/physical): 512 bytes / 512 bytes
680 I/O size (minimum/optimal): 512 bytes / 512 bytes
681 Disk /dev/mapper/rhel-swap: 4 GiB, 4294967296 bytes, 8388608 sectors
682 Units: sectors of 1 * 512 = 512 bytes
683 Sector size (logical/physical): 512 bytes / 512 bytes
684 I/O size (minimum/optimal): 512 bytes / 512 bytes
685 Disk /dev/mapper/volg-lv0: 2 GiB, 2147483648 bytes, 4194304 sectors
686 Units: sectors of 1 * 512 = 512 bytes
687 Sector size (logical/physical): 512 bytes / 512 bytes
688 I/O size (minimum/optimal): 512 bytes / 512 bytes
689 Disk /dev/mapper/volg-lv1: 500 MiB, 524288000 bytes, 1024000 sectors
690 Units: sectors of 1 * 512 = 512 bytes
691 Sector size (logical/physical): 512 bytes / 512 bytes
692 I/O size (minimum/optimal): 512 bytes / 512 bytes
693 Disk /dev/mapper/rhel-home: 10 GiB, 10737418240 bytes, 20971520 sectors
694 Units: sectors of 1 * 512 = 512 bytes
695 Sector size (logical/physical): 512 bytes / 512 bytes
696 I/O size (minimum/optimal): 512 bytes / 512 bytes
697 Disk /dev/mapper/rhel-lvm1: 4 MiB, 4194304 bytes, 8192 sectors
698 Units: sectors of 1 * 512 = 512 bytes
699 Sector size (logical/physical): 512 bytes / 512 bytes
700 I/O size (minimum/optimal): 512 bytes / 512 bytes
701 [root@balaserver ~]# fdisk /dev/sdb
702 Welcome to fdisk (util-linux 2.32.1).
703 Changes will remain in memory only, until you decide to write them.
704 Be careful before using the write command.
705 c
706 history
707 history >his.txt
2 fsck
3 fsck /sda
4 fsck /sda2
5 fsck /dev//sda2
6 fsck /dev//sda1
7 xfs_repair
8 xfs_repair /dev/sda2
9 xfs_repair /dev/sda1
10 umount /dev/sda2
11 umount /dev/sda1
12 xfs_repair /dev/sda1
13 fsck /dev/sda
14 e2fsck /dev/sda
15 umount /dev/sda
16 fdisk -l
17 umount /dev/sda2
18 df -h
19 e2fsck /dev/sda2
20 e2fsck /dev/mapper/rhel-root
21 umount /dev/mapper/rhel-root
22 subscription-manager unregister --username=balachavalli
23 subscription-manager unregister --username=balachavali
24 subscription-manager unregister
25 reboot
26 umount /dev/mapper/rhel-root
27 umount /dev/mapper/rhel-home
28 clear
29 c
30 umount /dev/sda
31 umount /dev/sda2
32 umount /dev/sda1
33 fsck /dev/sda1
34 xfs_repair /dev/sda1
35 grub2 install /dev/sda
36 poweroff
37 fsck /dev/sda
38 exit
39 poweroff
40 exit
41 free -m
42 exit
43 systemctl status smb
44 systemctl start smb
45 history
46 history > history2_practice.txt|scp history2_practice apple@192.168.0.100
47 history > history2_practice.txt|scp history2_practice.txt apple@192.168.0.100
48 history > history2_practice.txt|scp history2_practice.txt apple@192.168.0.100:/Users/apple
49 vi /etc/hosts
50 ssh apple
51 ssh apple@apple
52 c
53 cd /ktsamba/
54 ll
55 ls -ldZ /ktsamba/
56 chmod 777 /ktsamba/
57 c
58 vi /etc/samba/smb.conf
59 systemctl start smb
60 systemctl status smb
61 systemctl restart smb
62 systemctl status smb
63 systemctl stop firewalld.service
64 systemctl start firewalld.service
65 c
66 chcon -Rt samba_share_t /ktsamba/
67 ls -ldZ /ktsamba/
68 systemctl restart smb.service
69 systemctl status smb.service
70 systemctl list-unit-files --state=enabled
71 systemctl stop firewalld.service
72 systemctl status smb.service
73 journalctl -xe
74 c
75 vi /etc/samba/smb.conf
76 c
77 systemctl restart smb.service
78 vi /etc/samba/smb.conf
79 systemctl restart smb.service
80 vi /etc/samba/smb.conf
81 systemctl restart smb.service
82 find . -type file -print
83 find . -type file print
84 find . -type print
85 find . -type p
86 find / -type p
87 find / -type b
88 find / -type c
89 find / -type d
90 cd /ktsamba/
91 ll
92 cd /samba
93 cd samba
94 c
95 cd ~
96 exit
97 ip -4 a
98 exit
99 yum repolist all
100 c
101 ll
102 which ping
103 ls -l /usr/sbin/ping
104 chmod 777 ~/.ssh/
105 exit
106 ll
107 ls -l ~/.ssh/
108 ls -l ~/.ssh
109 ls -l .ssh
110 ls -ld .ssh
111 chmod -R 777 ~/.ssh/*
112 ls -ld .ssh
113 ls -ld .ssh/*
114 c
115 exit
116 ll
117 cd vnc/
118 ll
119 cd ..
120 ll
121 cd
122 ll
123 less initial-setup-ks.cfg
124 pwd
125 cat process.sh
126 c
127 free -m
128 echo ~
129 cd ~
130 ll
131 vi ~/process.sh
132 ./process.sh
133 echo $USER
134 vi /process.sh
135 vi process.sh
136 ./process.sh
137 vi ~/.bash_profile
138 exit
139 p
140 vi ~/.bash_profile
141 exit
142 c
143 which rpm
144 which ping
145 locate ping
146 locate limits
147 locate limits.conf
148 limits
149 ps
150 ps -ef
151 kill -9 1
152 kill 1
153 c
154 ps -ef
155 kill -9 20208
156 p
157 c
158 p
159 vi ~/process.sh
160 vi echo.sh
161 ./echo.sh
162 sh echo.sh
163 c
164 sh echo.sh
165 su - bala
166 vi .bash_profile
167 c
168 ifconfig
169 ifconfig enp0s8
170 find / -name limit*
171 vi /etc/security/limits.conf
172 c
173 find / -name limits*
174 vi /etc/security/limits.conf
175 c
176 cd .
177 cd ..
178 mkdir dir1
179 mkdir dir1/dir2
180 cd dir1/dir2
181 cd ~
182 pwd
183 cd dir1/dir2
184 cd /dir1/dir2
185 pwd
186 cd ~/dir1/dir2
187 c
188 cd /dir1/dir2
189 cd .
190 pwd
191 cd ..
192 c
193 tree
194 bin c
195 c
196 df -h
197 cd ..
198 cd /dev
199 ll
200 c
201 cd /mnt
202 ll
203 cd AppStream/
204 ll
205 cd Packages/
206 ll
207 c
208 find . -name httpd
209 find . -name httpd*
210 ps -ef|grep httpd
211 ps -ef
212 ps
213 ps -aux
214 c
215 du -sh *
216 c
217 du -h *
218 du -s *
219 pinfo du
220 du --help
221 su - balu
222 c
223 su - balu
224 systemctl enable --now cockpit.socket
225 exit
226 exit
227 ip -4 a
228 ssh root@balaclient
229 systemctl enable --cockpit
230 systemctl enable -cockpit
231 hostname
232 ssh root@192.168.0.109
233 systemctl reboot
234 c
235 nmtui
236 vi /etc/sysconfig/network-scripts/ifcfg-enp0s3
237 c
238 systemctl status sshd
239 ps
240 systemctl status httpd
241 yum info httpd
242 rpm -q httpd
243 yum install httpd
244 yum history
245 ssh root@192.168.0.108
246 ssh root@balaclient
247 subscription-manager unregister --username=balachavali
248 subscription-manager unregister
249 subscription-manager register --username
250 subscription-manager register --username=balachavali
251 exit
252 journalctl -xe
253 chmod 755 /root/.ssh/id_rsa
254 exit
255 systemctl status cockpit
256 curl https://192.168.122.168:9090 --insecure
257 curl https://192.168.0.109:9090 --insecure
258 https://192.168.0.108:9090
259 curl https://192.168.0.108:9090
260 c
261 systemctl start smb.service
262 systemctl status smb.service
263 c
264 smbpasswd joe
265 passwd joe
266 exit
267 systemctl stop cockpit.service
268 systemctl stop cockpit.socket
269 systemctl start cockpit.socket
270 systemctl disable cockpit.socket
271 systemctl enable cockpit.socket
272 exit
273 ssh root@balaclient
274 c
275 systemctl status cockpit
276 ssh balaclient
277 c
278 ssh balaclient
279 ls -l .ssh/
280 chmod -R 644 .ssh
281 ls -l .ssh
282 c
283 ls -l
284 c
285 ps ux
286 ps --help
287 pinfo ps
288 ps -ejH
289 git config—global color.ui auto
290 su -
291 su - balu
292 usermod -d /home/sumi sumi
293 kill -9 3113
294 fdisk -l
295 partprobe
296 fdisk
297 fdisk -l
298 c
299 partprobe
300 fdisk -l
301 c
302 mkdir /home/software
303 useradd -d /home/software sumi
304 mkdir /software
305 useradd -d /software sumi
306 cd /home/software/
307 ll
308 cd /home/
309 ll
310 userdel -R bala
311 userdel -r bala
312 ll
313 tail /etc/passwd|grep suma
314 tail -5 /etc/passwd
315 mkdir /home/software/sumi
316 usermod -m -d /home/software/sumi sumi
317 usermod -m -d /home/software/sumi/engineer sumi
318 usermod -d /home/software/sumi/engineer sumi
319 c
320 cd
321 cd /home/software/sumi/
322 ll
323 passwd sumi
324 su - sumi
325 userdel -R sumi
326 userdel sumi
327 kill 3362
328 userdel -r sumi
329 kill -9 3362
330 usermod -d /home/sumi sumi
331 su - sumi
332 userdel sumi userdel -r sumi
333 usermod -d /home/sumi sumi
334 mkdir /home/sumi
335 su - sumi
336 c
337 less /etc/login.defs
338 usermod -c "software_engineer" suma
339 grep -E --color 'suma' /etc/passwd
340 grep -E --color 'software_engineer' /etc/passwd
341 grep -E --color yellow 'software_engineer' /etc/passwd
342 grep -E --color=yellow 'software_engineer' /etc/passwd
343 grep -E --color=#f9f9f9 'software_engineer' /etc/passwd
344 c
345 grep -E --color=auto 'software_engineer' /etc/passwd
346 export GREP_COLOR='00;38;5;226'
347 grep -E --color=auto 'software_engineer' /etc/passwd
348 export GREP_COLOR='00;38;5;100'
349 grep -E --color=auto 'software_engineer' /etc/passwd
350 export GREP_COLOR='00;100;100;250'
351 grep -E --color=auto 'software_engineer' /etc/passwd
352 vi ~/.bash_profile
353 c
354 vi ~/.bash_profile
355 exit
356 sudo -i
357 vi ~/.bash_profile
358 source ~/.bash_
359 source ~/.bash_profile
360 exit
361 grep "software*" /etc/passwd
362 exit
363 grep "software*" /etc/passwd
364 vi ~/.bash_profile
365 grep "software*" /etc/passwd
366 source ~/.bash_profile
367 grep "software*" /etc/passwd
368 exit
369 grep "software*" /etc/passwd
370 export GREP_COLOR='00;38;5;226'
371 grep "software*" /etc/passwd
372 export GREP_COLOR='00;38;226;226'
373 grep "software*" /etc/passwd
374 export GREP_COLOR='00;38;226;226'
375 export GREP_COLOR='00;38;0;226'
376 grep "software*" /etc/passwd
377 export GREP_COLOR='00;38;5;226'
378 grep "software*" /etc/passwd
379 c
380 grep "software*" /etc/passwd
381 export GREP_COLOR='00;38;5;100'
382 grep "software*" /etc/passwd
383 export GREP_COLOR='00;100;5;100'
384 grep "software*" /etc/passwd
385 export GREP_COLOR='00;2;5;100'
386 grep "software*" /etc/passwd
387 export GREP_COLOR='00;250;5;100'
388 grep "software*" /etc/passwd
389 export GREP_COLOR='100;250;5;100'
390 grep "software*" /etc/passwd
391 grep "software_engineer" /etc/passwd
392 c
393 grep "software_engineer" /etc/passwd
394 vi ~/.bash_profile
395 grep "software_engineer" /etc/passwd
396 exit
397 grep "software_engineer" /etc/passwd
398 c
399 grep "software_engineer" /etc/passwd
400 grep "/bin/bash" /etc/passwd
401 grep "1005" /etc/passwd
402 grep "x" /etc/passwd
403 grep "nologin" /etc/passwd
404 grep "proc" /etc/passwd
405 c
406 grep "proc" /etc/passwd
407 cd /proc/
408 ll
409 grep "meminfo" /proc/
410 grep "meminfo" /proc/*
411 c
412 userdel -r sumi
413 userdel sumi
414 tail -f passwd
415 tail -5 passwd
416 tail -5 /etc/passwd
417 useradd -d /home/sumi/ suma
418 userdel -r suma
419 rm -i /home/sumi/
420 cd home
421 cd /home
422 ll
423 rm -rf sumi/
424 useradd suma
425 ll
426 passwd suma
427 su - suma
428 drwx------. 4 balu balu 197 Feb 28 21:14 balu
429 drwx------. 3 joe joe 154 Feb 23 16:36 joe
430 drwx------. 7 samba samba 4096 Feb 23 19:02 samba
431 drwxr-xr-x. 3 root root 18 Feb 29 11:41 software
432 drwx------. 3 suma suma 78 Feb 29 11:53 suma
433 drwxr-xr-x. 4 root root 29 Feb 22 14:17 tecmint
434 [suma@balaserver home]$ chown suma:suma software/
435 chown: changing ownership of 'software/': Operation not permitted
436 [suma@balaserver home]$ sudo chown suma:suma software/
437 We trust you have received the usual lecture from the local System
438 Administrator. It usually boils down to these three things:
439 #1) Respect the privacy of others.
440 #2) Think before you type.
441 #3) With great power comes great responsibility.
442 [sudo] password for suma:
443 suma is not in the sudoers file. This incident will be reported.
444 c
445 usermod -aG wheel suma
446 ll
447 su - suma
448 fdisk -l
449 fdisk /dev/sdb
450 fdisk -l
451 mkfs.ext4 /dev/sdb1
452 fdisk -l
453 mkdir /space
454 mount /dev/sdb1 /space
455 df -Th
456 cd /space
457 history
458 history > his.txt
459 less his.txt
460 fdisk -l >format.txt
461 less format.txt
462 df -Th >format.txt
463 less format.txt
464 fdisk -l >> format.txt
465 less format.txt
466 c
467 df -h
468 df -Th
469 df
470 du -sh
471 du -sh /
472 du -sh /mnt
473 du -sh /mnt/*
474 du -sh /mnt
475 du -sh /mnt/*
476 c
477 mount -a
478 vi /etc/fstab
479 umount /space
480 cd ~
481 umount /space
482 mount -a
483 df -Th
484 inode
485 c
486 df -Th
487 lsblk
488 cd /boot
489 ll
490 cd grub2
491 ll
492 vi grub.cfg
493 c
494 cd /
495 ll
496 smbpasswd samba
497 fdisk -l
498 fdisk /dev/sdb
499 pvcreate /dev/sdb2
500 pvs
501 vgcreate volg /dev/sdb2
502 vgs
503 lvcreate -L 500M -n lv0 volg
504 lvs
505 lvcreate -L 500M -n lv1 volg
506 lvs
507 vgs
508 lvdisplay
509 lvdisplay lv1
510 lvdisplay lv0
511 lvdisplay volg
512 mkfs.ext4 /dev/volg/lv0
513 mkfs.ext4 /dev/volg/lv1
514 mkdir lv
515 mkfs.ext4 /dev/volg/lv1 /lv
516 mkfs.ext4 /dev/volg/lv1 lv
517 c
518 mkdir lvv
519 mkfs.ext4 /dev/volg/lv1 lvv
520 cd lvv
521 mkfs.xfs /dev/volg/lv1 lvv
522 mkfs -t ext4 /dev/mapper/volg-lv0
523 mkdir /mnt/stuff
524 mkdir /stuff
525 mount -t ext4 /dev/mapper/volg-lv0 /stuff
526 cd /stuff/
527 ll
528 du -sh *
529 df -h
530 c
531 df -Th
532 c
533 history
534 ll
535 cc
536 c
537 fdisk -l
538 fdisk /dev/sdb
539 df -h
540 umount /space
541 ll
542 df -h
543 mount -a
544 df -h
545 c
546 pvs
547 pvdisplay
548 lvdisplay
549 fdisk -l
550 vgextend volg /dev/sda1
551 vgextend volg /dev/sdb1
552 df -h
553 c
554 fdisk /dev/sdb
555 pvs
556 vgextend volg /dev/sdb3
557 lvextend -L 2G /dev/volg/lv0
558 resize2fs /dev/volg/lv0
559 e2fsck -f /dev/volg//lvo
560 e2fsck -f /dev/volg/lvo
561 pvs
562 lvs
563 pvs
564 fdisk -l
565 fdisk /dev/sdb
566 vgextend volg /dev/sdb4
567 lvextend -L +3G /dev/volg/lv1
568 lvs
569 [root@balaserver ~]# fdisk /dev/sdb
570 Welcome to fdisk (util-linux 2.32.1).
571 Changes will remain in memory only, until you decide to write them.
572 Be careful before using the write command.
573 Command (m for help): n
574 Partition type
575 p primary (2 primary, 0 extended, 2 free)
576 e extended (container for logical partitions)
577 Select (default p): 1
578 Value out of range.
579 p primary (2 primary, 0 extended, 2 free)
580 e extended (container for logical partitions)
581 Select (default p): e
582 Partition number (3,4, default 3): 3
583 First sector (20973568-33554431, default 20973568):
584 Last sector, +sectors or +size{K,M,G,T,P} (20973568-33554431, default 33554431):
585 Created a new partition 3 of type 'Extended' and of size 6 GiB.
586 Command (m for help): n
587 All space for primary partitions is in use.
588 Adding logical partition 5
589 First sector (20975616-33554431, default 20975616): q
590 Value out of range.
591 First sector (20975616-33554431, default 20975616): ^C
592 Command (m for help): q
593 [root@balaserver ~]# fdisk /dev/sdb
594 Welcome to fdisk (util-linux 2.32.1).
595 Changes will remain in memory only, until you decide to write them.
596 Be careful before using the write command.
597 Command (m for help): n
598 Partition type
599 p primary (2 primary, 0 extended, 2 free)
600 e extended (container for logical partitions)
601 Select (default p): p
602 Partition number (3,4, default 3): 3
603 First sector (20973568-33554431, default 20973568): 20973568
604 Last sector, +sectors or +size{K,M,G,T,P} (20973568-33554431, default 33554431): +2G
605 Created a new partition 3 of type 'Linux' and of size 2 GiB.
606 Command (m for help): t
607 Partition number (1-3, default 3): 3
608 Hex code (type L to list all codes): 8e
609 Changed type of partition 'Linux' to 'Linux LVM'.
610 Command (m for help): w
611 The partition table has been altered.
612 Syncing disks.
613 [root@balaserver ~]# pvs
614 PV VG Fmt Attr PSize PFree
615 /dev/sda2 rhel lvm2 a-- 79.00g 0
616 /dev/sdb2 volg lvm2 a-- <2.00g <1.02g
617 [root@balaserver ~]# vgextend volg /dev/sdb3
618 Physical volume "/dev/sdb3" successfully created.
619 Volume group "volg" successfully extended
620 [root@balaserver ~]# lvextend -L 8G /dev/volg/lv
621 /dev/volg/lv0 /dev/volg/lv1
622 [root@balaserver ~]# lvextend -L 8G /dev/volg/lv
623 /dev/volg/lv0 /dev/volg/lv1
624 [root@balaserver ~]# lvextend -L 2G /dev/volg/lv0
625 Size of logical volume volg/lv0 changed from 500.00 MiB (125 extents) to 2.00 GiB (512 extents).
626 Logical volume volg/lv0 successfully resized.
627 [root@balaserver ~]# resize2fs /dev/volg/lv0
628 resize2fs 1.44.6 (5-Mar-2019)
629 Please run 'e2fsck -f /dev/volg/lv0' first.
630 [root@balaserver ~]# e2fsck -f /dev/volg//lvo
631 e2fsck 1.44.6 (5-Mar-2019)
632 e2fsck: No such file or directory while trying to open /dev/volg//lvo
633 Possibly non-existent device?
634 [root@balaserver ~]# e2fsck -f /dev/volg/lvo
635 e2fsck 1.44.6 (5-Mar-2019)
636 e2fsck: No such file or directory while trying to open /dev/volg/lvo
637 Possibly non-existent device?
638 [root@balaserver ~]# pvs
639 PV VG Fmt Attr PSize PFree
640 /dev/sda2 rhel lvm2 a-- 79.00g 0
641 /dev/sdb2 volg lvm2 a-- <2.00g 0
642 /dev/sdb3 volg lvm2 a-- <2.00g 1.50g
643 [root@balaserver ~]# lvs
644 LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert
645 home rhel -wi-ao---- 10.00g
646 lvm1 rhel -wi-a----- 4.00m
647 root rhel -wi-ao---- 65.00g
648 swap rhel -wi-ao---- 4.00g
649 lv0 volg -wi-a----- 2.00g
650 lv1 volg -wi-a----- 500.00m
651 [root@balaserver ~]# pvs
652 PV VG Fmt Attr PSize PFree
653 /dev/sda2 rhel lvm2 a-- 79.00g 0
654 /dev/sdb2 volg lvm2 a-- <2.00g 0
655 /dev/sdb3 volg lvm2 a-- <2.00g 1.50g
656 [root@balaserver ~]# fdisk -l
657 Disk /dev/sda: 80 GiB, 85899280384 bytes, 167772032 sectors
658 Units: sectors of 1 * 512 = 512 bytes
659 Sector size (logical/physical): 512 bytes / 512 bytes
660 I/O size (minimum/optimal): 512 bytes / 512 bytes
661 Disklabel type: dos
662 Disk identifier: 0x2b74ab42
663 Device Boot Start End Sectors Size Id Type
664 /dev/sda1 * 2048 1050623 1048576 512M 83 Linux
665 /dev/sda2 1050624 166742015 165691392 79G 8e Linux LVM
666 /dev/sda3 166742016 167772031 1030016 503M 5 Extended
667 Disk /dev/sdb: 16 GiB, 17179869184 bytes, 33554432 sectors
668 Units: sectors of 1 * 512 = 512 bytes
669 Sector size (logical/physical): 512 bytes / 512 bytes
670 I/O size (minimum/optimal): 512 bytes / 512 bytes
671 Disklabel type: dos
672 Disk identifier: 0xa60bf9e2
673 Device Boot Start End Sectors Size Id Type
674 /dev/sdb1 2048 16779263 16777216 8G 8e Linux LVM
675 /dev/sdb2 16779264 20973567 4194304 2G 8e Linux LVM
676 /dev/sdb3 20973568 25167871 4194304 2G 8e Linux LVM
677 Disk /dev/mapper/rhel-root: 65 GiB, 69793218560 bytes, 136314880 sectors
678 Units: sectors of 1 * 512 = 512 bytes
679 Sector size (logical/physical): 512 bytes / 512 bytes
680 I/O size (minimum/optimal): 512 bytes / 512 bytes
681 Disk /dev/mapper/rhel-swap: 4 GiB, 4294967296 bytes, 8388608 sectors
682 Units: sectors of 1 * 512 = 512 bytes
683 Sector size (logical/physical): 512 bytes / 512 bytes
684 I/O size (minimum/optimal): 512 bytes / 512 bytes
685 Disk /dev/mapper/volg-lv0: 2 GiB, 2147483648 bytes, 4194304 sectors
686 Units: sectors of 1 * 512 = 512 bytes
687 Sector size (logical/physical): 512 bytes / 512 bytes
688 I/O size (minimum/optimal): 512 bytes / 512 bytes
689 Disk /dev/mapper/volg-lv1: 500 MiB, 524288000 bytes, 1024000 sectors
690 Units: sectors of 1 * 512 = 512 bytes
691 Sector size (logical/physical): 512 bytes / 512 bytes
692 I/O size (minimum/optimal): 512 bytes / 512 bytes
693 Disk /dev/mapper/rhel-home: 10 GiB, 10737418240 bytes, 20971520 sectors
694 Units: sectors of 1 * 512 = 512 bytes
695 Sector size (logical/physical): 512 bytes / 512 bytes
696 I/O size (minimum/optimal): 512 bytes / 512 bytes
697 Disk /dev/mapper/rhel-lvm1: 4 MiB, 4194304 bytes, 8192 sectors
698 Units: sectors of 1 * 512 = 512 bytes
699 Sector size (logical/physical): 512 bytes / 512 bytes
700 I/O size (minimum/optimal): 512 bytes / 512 bytes
701 [root@balaserver ~]# fdisk /dev/sdb
702 Welcome to fdisk (util-linux 2.32.1).
703 Changes will remain in memory only, until you decide to write them.
704 Be careful before using the write command.
705 c
706 history
707 history >his.txt