# If given two arguments to cd, replace the first with the second in $PWD, # emulating a Zsh function that I often find useful; preserves options too cd() { local opt OPTERR OPTIND local -a opts while getopts elP opt; do opts[${#opts[@]}]=-$opt done shift $(($OPTIND-1)) if (($# == 2)); then if [[ $PWD == *$1* ]]; then builtin cd "${opts[@]}" "${PWD/$1/$2}" else printf %s "bash: cd: could not replace substring\n" >&2 return 1 fi else builtin cd "${opts[@]}" "$@" fi }