From Bulky Moth, 7 Months ago, written in Plain Text.
#!/bin/bash
while getopts ":l:" opt
do
case "$opt" in
l)
arg1="${OPTARG}"
if [ -z "$arg1" ]
then
echo "No argument"
else
echo "Argument is $arg1"
fi
exit 0
;;
\?)
echo "Invalid option"
exit 1
;;
esac
done
if [ $OPTIND -eq 1 ]
then
echo "Invalid usage"
fi
My requirement from the script
Script with no arguments
$ ./myscript -l
$ No argument
Script with argument
$ ./myscript -l abcd
$ Argument is abcd
{"html5":"htmlmixed","css":"css","javascript":"javascript","php":"php","python":"python","ruby":"ruby","lua":"text\/x-lua","bash":"text\/x-sh","go":"go","c":"text\/x-csrc","cpp":"text\/x-c++src","diff":"diff","latex":"stex","sql":"sql","xml":"xml","apl":"apl","asterisk":"asterisk","c_loadrunner":"text\/x-csrc","c_mac":"text\/x-csrc","coffeescript":"text\/x-coffeescript","csharp":"text\/x-csharp","d":"d","ecmascript":"javascript","erlang":"erlang","groovy":"text\/x-groovy","haskell":"text\/x-haskell","haxe":"text\/x-haxe","html4strict":"htmlmixed","java":"text\/x-java","java5":"text\/x-java","jquery":"javascript","mirc":"mirc","mysql":"sql","ocaml":"text\/x-ocaml","pascal":"text\/x-pascal","perl":"perl","perl6":"perl","plsql":"sql","properties":"text\/x-properties","q":"text\/x-q","scala":"scala","scheme":"text\/x-scheme","tcl":"text\/x-tcl","vb":"text\/x-vb","verilog":"text\/x-verilog","yaml":"text\/x-yaml","z80":"text\/x-z80"}