🚀 go-pugleaf

["Followup-To:" header set to comp.unix.shell.]
On 11 Jul 2006 13:20:11 -0700, kvnsmnsn@hotmail.com 
  <kvnsmnsn@hotmail.com> wrote:
> I'm trying to build a bash script that creates an "x.java" and a
> "y.java" file from three existing pairs of files, depending on whether
> an "a", a "b", or a "c" is entered on the command line.  My bash code
> checks to see if the number of arguments entered on the command line
> is one, which check it handles fine, but if it passes that check and
> goes on to the next "if" statement, it gives me the complaints:
>
>      Hmm.sh: line 4: [: missing `]'
>      Hmm.sh: line 4: a: command not found
>      Hmm.sh: line 4: a: command not found
>      Incorrect operand "a".
>
> My actual code is:
>
>      #! /bin/sh
>      if [ $# == 1 ]
>      then
>        if [ $1 == "a" || $1 == "b" || $1 == "c" ]
   The "[" command must end with  "]".  "||" separates two commands.
   The "if" statement above can be rewritten in three ways:

        if [ $1 == "a" ] || [ $1 == "b" ] || [ $1 == "c" ]

        if [ $1 == "a" -o $1 == "b" -o $1 == "c" ]

        case $1 of
          a|b|c) ... ;;
              *) ... ;;
        esac
 


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