Shell Programming and Scripting

$ cat dummy
#!/bin/bash
# Argument = -t test -r server -p password -v

usage()
{
cat << EOF
usage: $0 options

This script run the test1 or test2 over a machine.

OPTIONS:
-h Show help message
-t Take Argument and Print
-v Verbose
EOF
}

TEST=
VERBOSE=
while getopts "ht:v" OPTION
do
case $OPTION in
h)
usage
exit 1
;;
t)
TEST=$OPTARG; echo -e " \n Output : Your Input is ${TEST} \n"
;;
v)
VERBOSE=1
;;
?)
usage
exit
;;
esac
done

[kumar@explore-02] "/home/kumar/TEST/"
$ dummy.ksh -t Taking_Input

Output : Your Input is Taking_Input

$ dummy.ksh -variable Taking_Input
or
$ dummy.ksh --variable Taking_Input

#!/bin/ksh

# @(#) s4	Demonstrate features in ksh getopts.
# http://www.linuxmisc.com/12-unix-web-servers/7c7aac453490253a.htm

USAGE="[+NAME?$0]"
USAGE+="[+DESCRIPTION?Just a little test script]"
USAGE+="[h:hello?Greets you.]"
USAGE+="[n:name]:?[given:=drl0?Your name.]"

hello=0

while getopts "$USAGE" opt; do
    case $opt in
        h) hello=1 ;;
        n) given="$OPTARG" ;;
    esac
done

print "Your name is $given"

if [[ $hello != 0 ]]; then
    print "Hello $given!"
fi 

exit 0

#!/usr/bin/env ksh

# @(#) run4	Exercise ksh script s4.

pe() { for _i;do printf "%s" "$_i";done; printf "\n"; }
pl() { pe;pe "-----" ;pe "$*"; }
db() { ( printf " db, ";for _i;do printf "%s" "$_i";done;printf "\n" ) >&2 ; }
db() { : ; }
version && version ksh

r=./s4

pl " No parameters:"
$r

pl " Set name, -n:"
$r -n drl1

pl " Set name, --name:"
$r --name=drl2

pl " Say hello:"
$r -h -n drl3

pl " Say hello:"
$r  --name=drl4 --hello

pl " Print help:"
$r --help

pl " Print man page:"
$r --man

exit 0

% ./run4
ksh 93s+

-----
 No parameters:
Your name is 

-----
 Set name, -n:
Your name is drl1

-----
 Set name, --name:
Your name is drl2

-----
 Say hello:
Your name is drl3
Hello drl3!

-----
 Say hello:
Your name is drl4
Hello drl4!

-----
 Print help:
Usage: ./s4 [ options ]
OPTIONS
  -h, --hello     Greets you.
  -n, --name[=given]
                  Your name. The option value may be omitted. The default value
                  is drl0.

-----
 Print man page:
NAME
  ./s4

SYNOPSIS
  ./s4 [ options ]

DESCRIPTION
  Just a little test script

OPTIONS
  -h, --hello     Greets you.
  -n, --name[=given]
                  Your name. The option value may be omitted. The default value
                  is drl0.