my interactive zsh functions

gistfile1.sh

# change to temp dir
t()  {
    if [ ${1:-0} -eq 0 ]
    then
        mkdir -p ~/temp/$(date -d "${1:-0} days ago" +%Y%m%d)
    fi
    cd ~/temp/$(date -d "${1:-0} days ago" +%Y%m%d)
}
# scp if any arguments contain a colon
scp () {
    for i in $*
    do case $i in
        *:*) command scp $*
            return $?
       esac
    done
    echo No remote path parameter. Aborting.
    return 1
}
# change to previous directory
p()  {
    cur=$(basename "$PWD")
    cd $(dirname "$PWD")/$(ls $(dirname "$PWD") -a |grep -EB1 "^${cur}/?$"|head -1)
}
# change to next directory
n()  {
    cur=$(basename "$PWD")
    cd $(dirname "$PWD")/$(ls $(dirname "$PWD") -a |grep -EA1 "^${cur}/?$"|tail -1)
}