useful bashrc snippets

# Convenience function for cd & ls in one go

function cs () {
    cd "$@" && ls
}

# Like cs above but using z.sh: https://github.com/rupa/z
# Adds in a pwd so you can check z has put you where you expected it to!

. /etc/z/z.sh

function zs () {
    z "$@" && pwd && ls
}

# See the permissions for the given file (which can be specified by a relative path) and all the directories in its absolute path.
# Looks like:
# $ cd ~/scrap
# $ permtree blah.py
# f: /home/jfhc/scrap/blah.py
# dr-xr-xr-x /
# drwxr-xr-x home
# drwxr-xr-x jfhc
# drwxr-xr-x scrap
# -rwxr-xr-x blah.py

function permtree() {
        namei -m $(readlink -f "$@")
}