EXTERNAL ARTICLES

LVM


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script and validation for the lvm

[root@ansserve1 ~]# cd / [root@ansserve1 /]# ll total 24 lrwxrwxrwx.   1 root root    7 Aug 11  2022 bin -> usr/bin dr-xr-xr-x.   5 root root 4096 Aug 11  2022 boot drwxr-xr-x.  20 root root 3200 May  8 20:11 dev drwxr-xr-x. 143 root root 8192 May  8 20:11 etc drwxr-xr-x.   3 root root   18 Aug 11  2022 home lrwxrwxrwx.   1 root root    7 Aug 11  2022 lib -> usr/lib lrwxrwxrwx.   1 root root    9 Aug 11  2022 lib64 -> usr/lib64 drwxr-xr-x.   2 root root    6 Apr 11  2018 media drwxr-xr-x.   2 root root    6 Apr 11  2018 mnt drwxr-xr-x.   3 root root   16 Aug 11  2022 opt dr-xr-xr-x. 193 root root    0 May  8 20:11 proc dr-xr-x---.   8 root root  245 Feb 20 16:29 root drwxr-xr-x.  41 root root 1260 May  8 20:11 run lrwxrwxrwx.   1 root root    8 Aug 11 ...
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crontab editing

crontab Cron (aka Crontab) is a task scheduler in Linux that helps to execute a task on a scheduled time, and it is very similar to Windows Task Schedulers. With crontab, we can schedule repetitive tasks as well as one-time tasks using @ utility. Crontab is mostly used for executing backup scripts for taking the system backups and also sometimes to start and stop applications. Crontab Install Crontab The package name of crontab in CentOS / RHEL is cronie and cron in Ubuntu / Debian. You can install crontab using the below command. ### CentOS / RHEL ### yum -y install cronie ### Debian / Ubuntu ### apt-get install cron Start Crontab If the crontab is not running, then start it using the following command. service crond start Edit crontab To add or edit crontab jobs of a current logged in user, use the below command. The command will open a file editor where you can update the jobs. crontab -e To edit other users crontab jobs, use the below command...
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shell script to create and extending the volume

[bala@ansserve1 ~]$ ./script2.sh  This script must be run as root. [bala@ansserve1 ~]$ sudo ./script2.sh [sudo] password for bala:  --------list the devices------- NAME                       MAJ:MIN RM  SIZE RO TYPE MOUNTPOINT sda                          8:0    0   64G  0 disk  |-sda1                       8:1    0    1G  0 part /boot `-sda2                       8:2    0   63G  0 part    |-centos_ansserve-root   253:0    0 40.8G  0 lvm  /   |-centos_ansserve-swap   253:1    0  2.3G  0 lvm  [SWAP]   |-centos_ansserve-home   253:2    0 19.9G  0 lvm  /home   `-centos_ansse...
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