Drop-in Bash script for a message-of-the day in an interactive shell.
Open to all, but tailored to rigs at New York University's:
Sample output:
)
(__ -----------------------
_ )_ < CBI//CNS//PSYCH TEK >
(_)_(_) -----------------------
(o o) _ _/
==\o/==
HOSTNAME(FQDN)................: pywype.psych.nyu.edu
LAST LOGIN....................: pi pts/0 10.27.0.162 Thu Jan 16 12:10 still logged in
UPTIME........................: 2 min 1
LOAD AVGS.....................: 0.78, 0.78, 0.34 (1 min 5 mins 15 mins)
RUNNING PROCESSES.............: 89 (total)
MEMORY USAGE..................: 39 41 (used unused)
DISK USAGE....................: 7.1G 4.0G 2.8G 60% (size used avail capacity)
IP ADDRESS....................: 172.22.114.85
MAC ADDRESS...................: b8:27:eb:05:6a:c7
motd: A read-only file, located at: /etc/motd.
motd.sh: An executable shell script, placed in /etc/profile.d.
For changes to take effect, you may need to do one (1) of the following:
-
open a new terminal window
-
logout/login
-
restart the ssh service
In Debian, Ubuntu (global):
Place the contents of motd.sh in: /etc/update-motd.d/00-welcome by creating the file, e.g.:
sudo cat motd.sh > /etc/update-motd.d/00-welcome
Make the file executable with:
sudo chmod +x /etc/update-motd.d/00-welcome
Modify: sshd_config file, changing: #PrintLastLog yes to: PrintLastLog no, by backing up the file, then editing it:
-
sudo cp /etc/ssh/sshd_config /etc/ssh/sshd_config.bak -
sudo sed -i 's/#PrintLastLog yes/PrintLastLog no/g' /etc/ssh/sshd_config
Restart the ssh service with:
sudo systemctl restart sshd
In macOS (per user):
Place motd.sh in: .bash_profile, e.g.:
cat motd.sh >> ~/.bash_profile
then source the file:
source ~/.bash_profile
In Red Hat Enterprise Linux (RHEL) (global):
Place motd.sh in: /etc/profile.d, e.g.:
cp -v motd.sh > /etc/profile.d/
Set permisisons on the file:
chmod 755 /etc/profile.d/motd.sh
v.0.1 14-JUN-2018
v.0.2 16-JAN-2024