Usually I enjoy my screen being covered with a variety of terminals across multiple servers. But on occasion, I type utterly the wrong thing, in utterly the wrong place, and calamity ensues.
So to provide a slight buffer against this, I made a change in my bash prompt. It clues me in if I am on a remote server, a non-personal machine if you will, on which I need to exercise more caution before beating the enter key:
Just something noticeable, but not overly intrusive. Won’t stop idiocy, of course, but it can’t hurt.
To make it work:
1 2 3 4 5 6 7 8 9 10 11 | # Prompt with easier to read coloring. # Define and check for safe boxes: declare -a LOCALBOXES[0]="MyBox1" LOCALBOXES[1]="MyBox2" CURRENTBOX=`hostname` for box in $LOCALBOXES do if [[ $CURRENTBOX = $box ]] ; then PS1="\[\033[0;31m\][\T]\[\033[0;36m\]\u@\[\033[1;33m\]\H \[\033[1;34m\]\w:\[\033[0m\]" else PS1="\[\033[1;36m\]**REMOTE**\[\033[0;31m\][\T]\[\033[0;36m\]\u@\[\033[1;33m\]\H \[\033[1;34m\]\w: \[\033[0m\]" fi done |
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I like to use a little color to warn myself when I’m root:
PS1=”\h:\$(date +%H:%M):\w
\[\033[1;41m\]\[\033[1;37m\]ROOT\033[0m # “
That sounds like a good idea, but I try never to have to work as root on a server:-)