Limit the length of the displayed path in the Bash prompt. Loosely based
on the ideas at:
http://www.faqs.org/docs/Linux-HOWTO/Bash-Prompt-HOWTO.html#AEN768
Two mechanisms are presented (one of them is commented out):
1. Trim the path to the last 30 characters, and cut off a partial
leading directory name
2. Just display the last three directory names in the path
Put the following in your .bashrc:
# Replace the \w in the default Ubuntu prompt with $newPWD
if [ "$color_prompt" = yes ]; then
#PS1='${debian_chroot:+($debian_chroot)}\[\033[01;32m\...@\h\[\033[00m\]:\[\033[01;34m\]\w\[\033[00m\]\$
'
PS1='${debian_chroot:+($debian_chroot)}\[\033[01;32m\...@\h\[\033[00m\]:\[\033[01;34m\]$newPWD\[\033[00m\]\$
'
else
#PS1='${debian_chroot:+($debian_chroot)}...@\h:\w\$ '
PS1='${debian_chroot:+($debian_chroot)}...@\h:$newPWD\$ '
fi
function prompt_command {
local trunc_string="..."
newPWD="${PWD/$HOME/~}"
# Remove leading directories beyond a certain length
# Strip any partial directory names
local pwdmaxlen=30
if [ ${#newPWD} -gt $pwdmaxlen ]; then
local pwdoffset=$(( ${#newPWD} - $pwdmaxlen ))
newPWD="${newPWD:$pwdoffset:$pwdmaxlen}"
newPWD="${trunc_string}/${newPWD#*/}"
fi
## Remove leading directories, leaving a maximum of three
#remove_dirs="${newPWD%/*/*/*}"
#if [[ ${remove_dirs} != $newPWD ]]; then
# newPWD=${trunc_string}${newPWD/$remove_dirs\//}
#fi
# If this is an xterm set the title to u...@host:dir
case "$TERM" in
xterm*|rxvt*)
echo -ne "\033]0;${us...@${hostname}: ${PWD/$HOME/~}\007"
;;
*)
;;
esac
}
export PROMPT_COMMAND=prompt_command
Douglas.
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