Shell directory bookmarks

gistfile1.sh

# Add this to your .bashrc, or paste it into your shell for testing
#
# Bookmarks for directories
#
# Usage:
#   bm name -- Create a bookmark for the current working directory
#              Bookmarks are saved across sessions in ~/.bookmarks
#   to name -- cd to the bookmarked directory
#   to      -- Dump all bookmarks
#
# Bookmarks are saved in shell variables with the same name. This way they can
# be used in other commands as well:
#   vi $name/file.txt
#
bm() {
        eval $1=$(pwd)
        bm_file=~/.bookmarks
        touch $bm_file
        perl -ni -e "print unless /^$1=/" $bm_file
        echo "$1=$(pwd)" >> $bm_file
}
to() {
        if [ "$1" ]; then
                eval dir=\$$1
                cd "$dir"
        else
                cat ~/.bookmarks
        fi
}