Linux CentOS 7 - Configuring aliases

Linux CentOS 7 - Configuring aliases

Configure a simple alias for a complex command. For instance,

create a custom command called qstat on system1 that runs the command: 

/bin/ps -Ao pid,tt,user,fname,rsz

This command should be available to all users on the system. 

On system1:

Edit the /etc/bashrc file:

 # vim /etc/bashrc

Scroll to the bottom of the file and add this line:

alias qstat="bin/ps -Ao pid,tt,user,fname,rsz"

then save and exit; run the command:

# source /etc/bashrc

Verfiy by running the command:

# qstat

Sample output:
   PID TT       USER     COMMAND    RSZ
     1 ?        root     systemd   6864
     2 ?        root     kthreadd     0
     3 ?        root     ksoftirq     0
     5 ?        root     kworker/     0
     7 ?        root     migratio     0
     8 ?        root     rcu_bh       0
     9 ?        root     rcu_sche     0
    10 ?        root     lru-add-     0
    11 ?        root     watchdog     0
    13 ?        root     kdevtmpf     0