Adam13531's "CCD" command for Unix/Linux

ccd.sh

# Allow for quick navigation of your filesystem.
# Example usage:
# ccd ~ Co sr stu
# This would move you to the folder ~/Code/src/stuff because it's translated as:
# cd ~
# cd Co
# cd Co*  (this is tried because "Co" doesn't exist)
# cd sr
# cd sr*
# etc.
# 
# Other features:
# * "..." and "...." can be used to go up multiple directories at a time.
# * If your directory can't be found, this will fall back to case-insensitivity.
function ccd() {
    # Iterate through each argument
    for arg in "$@"
    do
        if [[ "$arg" == "..." ]]; then
            # Go up 2 directories
            cd ../..
        elif [[ "$arg" == "...." ]]; then
            # Go up 3 directories
            cd ../../..
        elif [[ "$arg" == "....." ]]; then
            # Go up 4 directories
            cd ../../../..
        elif [[ -d "$arg" ]]; then
            # If this directory explicitly exists, navigate to it.
            cd "$arg"
        else
            # Try $arg* so that "co" will match "code". To do this, we do "ls"
            # and see if it prints this error:
            # "ls: Applica*: No such file or directory"
            local outputWithStar="$(ls $arg* 2>&1)"
            # NOTE Mon 12/14/2015 - 10:03 PM
            # Put quotes around "$outputWithStar" for Bash versions > 3.1.
            if [[ "$outputWithStar" =~ ^ls\:\ $arg ]]; then
                # "arg*" didn't exist, so fall back to case-insensitivity.
                local firstCaseInsensitiveMatch=`(ls|grep -i "^$arg"|head -1)`

                if [[ "$firstCaseInsensitiveMatch" == "" ]]; then
                    colorize "^r*** \"$arg\" does not exist. Printing directories: ***\n"

                    # Turn off coloring for this particular grep command so that
                    # we don't see the letter 'd' in red each time.
                    ls -l | egrep '^d' --color=never
                    printf "\n"
                    return
                else
                    cd "$firstCaseInsensitiveMatch"
                fi
            else
                local star="*"
                # Only $arg goes in quotes to cover an edge-case where there's a
                # directory with a space like "Hello World" and you type ccd
                # "Hello W".
                cd "$arg"$star
            fi
        fi
    done
}