ql (quicklook wrapper script)

ql.sh

#!/bin/sh
# quicklook wrapper script

if [ "$1" = '-v' ]
then
  shift
  qlmanage -p -d 4 "$@"
else
  qlmanage -p "$@" >/dev/null 2>&1
fi

ql.zsh

# quicklook wrapper function
#
# Example:
#   $ ql Main.java
#   $ ql -v main.go
#   $ ql *.php

function ql() {
  if [[ "$1" == '-v' ]]; then
    shift
    qlmanage -p -d 4 "$@"  # -d : debug level (1-4)
  else
    qlmanage -p "$@" &>/dev/null  # silence
  fi
}