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functions.ex
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functions.ex
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# functions
## go back to the directory where I kicked off a job-controlled job
cdjob() {
local d
: ${1:?"usage $FUNCNAME %N"}
d=$(jobs $1 | perl -lane 'print "cd $1" if m/.*\(wd: (.*)\).*/')
test "$d" && eval $d
}
## put the current directory into the X window decoration
xpwd() {
echo -ne "\e]0;${USER}@${HOSTNAME}: ${PWD/$HOME/~}\007"
}
## prompts: green for success, red for failure
export _r="\[\e[01;31m\]"
export _g="\[\e[01;32m\]"
export _n="\[\e[0m\]"
long-prompt() {
if [ $? = 0 ]; then
PS1="\u@$HOSTNAME:\w${_g}\$${_n} "
else
PS1="\u@$HOSTNAME:\w${_r}\$${_n} "
fi
xpwd
}
short-prompt() {
if [ $? = 0 ]; then
PS1="\W${_g}\$${_n} "
else
PS1="\W${_r}\$${_n} "
fi
xpwd
}
onechar-prompt() {
if [ $? = 0 ]; then
PS1="${_g}\$${_n} "
else
PS1="${_r}\$${_n} "
fi
xpwd
}
export PROMPT_COMMAND=long-prompt
prompt() {
case $1 in
onechar) PROMPT_COMMAND=onechar-prompt ;;
short) PROMPT_COMMAND=short-prompt ;;
long) PROMPT_COMMAND=long-prompt ;;
*) echo 'usage: prompt [onechar|short|long]' >&2 ;;
esac
}