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bash:getopts command help


 
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# 1  
bash:getopts command help

How can I say one of the options is required? can I use an if statement?
let say:
Code:
while getopts ":c:u:fp" opt; do
  case $opt in
    c)    echo "-c was triggered, Parameter: $OPTARG" >&2;;
    u)    echo "-u was triggered, Parameter: $OPTARG" >&2;;
    f)    echo "-u was triggered, Parameter: $OPTARG" >&2;;
    p)    echo "-u was triggered, Parameter: $OPTARG" >&2;;
    \?)    echo "Invalid option: -$OPTARG" >&2;exit 1;;
    *)    echo "Option -$OPTARG requires an argument." >&2;exit 1;;
  esac
done

Now I need to see if user requested one of the options -c or -u. it is necessary for the code.
if statement like the following wouldn't work:
Code:
if [ $opt != "c" ] then
    echo "./script: Must select : -u or -c"
    exit 1
fi

# 2  
Code:
ctrue=N
utrue=N
while getopts ":c:u:fp" opt; do
  case $opt in
    c)    ctrue=Y && echo "-c was triggered, Parameter: $OPTARG" >&2;;
    u)    utrue=Y && echo "-u was triggered, Parameter: $OPTARG" >&2;;
    f)    echo "-f was triggered, Parameter: $OPTARG" >&2;;
    p)    echo "-p was triggered, Parameter: $OPTARG" >&2;;
    \?)    echo "Invalid option: -$OPTARG" >&2;exit 1;;
    *)    echo "Option -$OPTARG requires an argument." >&2;exit 1;;
  esac
done
# if C was entered or U was entered (and both cannot be Y or N ) this cannot be true
if [ "$utrue" = "$ctrue" ]; then
  echo 'bad parameters'
else
  echo 'required parameter entered'
fi

Made one or two other minor changes in the echo statements.
This User Gave Thanks to jim mcnamara For This Post:
# 3  
I have this:
Code:
#!/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 this message
    -t        Test type, can be ‘test1′ or ‘test2′
    -r        Server address
    -p        Server root password
    -v        Verbose
EOF
}
 TEST=
SERVER=
PASSWD=
VERBOSE=
while getopts “ht:r:p:v” OPTION
do
      case $OPTION in
            h)
                  usage
                  exit 1
                  ;;
            t)
                  TEST=$OPTARG
                  ;;
            r)
                  SERVER=$OPTARG
                  ;;
            p)
                  PASSWD=$OPTARG
                  ;;
            v)
                  VERBOSE=1
                  ;;
            ?)
                  usage
                  exit
                  ;;
     esac
done
 if [[ -z $TEST ]] || [[ -z $SERVER ]] || [[ -z $PASSWD ]]
then
      usage
      exit 1
fi

when I run any other options it gives me the message:
Quote:
./myscript: illegal option -- r
This is controlled by the command not my script and I don't have such a message. How can I get rid of that error?

---------- Post updated 03-31-12 at 11:43 AM ---------- Previous update was 03-30-12 at 08:56 PM ----------

haha! I found the problem. it was wrong quotation!

Last edited by bashily; 03-31-2012 at 10:27 AM..

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