How to add Time Stamp for Command Prompt?

How to add timestamp for command prompt in CentOS, Ubuntu, Debian and SUSE Linux?

For Centos, edit bashrc file and add the line at end of the file.

[root@centos ~]# vi /etc/bashrc

PS1="[\u@\h \D{%Y%m%d-%H:%M:%S}]\$ "

An example of timestamp in Centos:-

[root@centos ~]# vi /etc/bashrc

PS1="[\u@\h \D{%Y%m%d-%H:%M:%S}]\$ "

[root@centos 20210311-06:57:00]$ uptime

06:57:04 up 14:41, 3 users, load average: 0.00, 0.01, 0.05

[root@centos 20210311-06:57:04]$

For Ubuntu and Debian, create /etc/bashrc file and add the below line at end of the file.

root@ubuntu:~# vi /etc/bashrc

PS1="[\u@\h \D{%Y%m%d-%H:%M:%S}]\$ "

1. For root user, edit .bashrc file and add below lines at end of the file.

root@ubuntu:~# vi /root/.bashrc

if [ -f /etc/bashrc ]; then
. /etc/bashrc
fi

2. For other users, edit .bashrc in the user's home directory and add the below line at the end of the file.

xander@ubuntu:~# vi /home/xander/.bashrc

if [ -f /etc/bashrc ]; then
. /etc/bashrc
fi

An example of timestamp for root user in Ubuntu:-

[root@ubuntu 20210313-01:47:56]$ uptime

01:48:00 up 3 days, 1:54, 4 users, load average: 0.08, 0.05, 0.01

[root@ubuntu 20210313-01:48:00]$

For SUSE Linux, edit .profile file of root and add below line at end of the file,

root@suse:~$ vi /etc/profile

PS1="[\u@\h \D{%Y%m%d-%H:%M:%S}]\$ "

For other users, edit .bashrc in the user's home directory and add the below line at the end of the file.

xander@suse:~# vi /home/xander/.bashrc

PS1="[\u@\h \D{%Y%m%d-%H:%M:%S}]\$ "

An example for a normal user in SUSE Linux:-

[xander@suse 20210313-01:47:56]# uptime

01:48:00 up 3 days, 1:54, 4 users, load average: 0.08, 0.05, 0.01

[xander@suse 20210313-01:48:00]#