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Full Discussion: Trying to implement case
Top Forums Shell Programming and Scripting Trying to implement case Post 302177756 by era on Sunday 23rd of March 2008 06:44:01 AM
Old 03-23-2008
The shell does not use slashes around case patterns. What you are looking for is

Code:
case "$test" in
  0*) echo "starting with zero ;;
  1*) echo " with one" ;;
  *) echo "otherwise";;  # note closing double semicolon here too
esac

awk simply falls through even if there is a match, so you can speculate what this does:

Code:
echo $test | awk '
/^0/ { print "starting with zero" }
/^1/ { print "with 1" }
/^[01]/ { print "neither" }
{ print "any of the above" }'

Last edited by era; 03-23-2008 at 07:45 AM.. Reason: Actually the double quotes in 'case "$test" in '... are not required, but I left them in anyway
 

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LEARN ABOUT FREEBSD

echo

ECHO(1) 						    BSD General Commands Manual 						   ECHO(1)

NAME

     echo -- write arguments to the standard output

SYNOPSIS

     echo [-n] [string ...]

DESCRIPTION

     The echo utility writes any specified operands, separated by single blank (' ') characters and followed by a newline ('
') character, to the
     standard output.

     The following option is available:

     -n    Do not print the trailing newline character.

     The end-of-options marker -- is not recognized and written literally.

     The newline may also be suppressed by appending 'c' to the end of the string, as is done by iBCS2 compatible systems.  Note that the -n
     option as well as the effect of 'c' are implementation-defined in IEEE Std 1003.1-2001 (``POSIX.1'') as amended by Cor. 1-2002.  For porta-
     bility, echo should only be used if the first argument does not start with a hyphen ('-') and does not contain any backslashes ('').  If
     this is not sufficient, printf(1) should be used.

     Most shells provide a builtin echo command which tends to differ from this utility in the treatment of options and backslashes.  Consult the
     builtin(1) manual page.

EXIT STATUS

     The echo utility exits 0 on success, and >0 if an error occurs.

SEE ALSO

     builtin(1), csh(1), printf(1), sh(1)

STANDARDS

     The echo utility conforms to IEEE Std 1003.1-2001 (``POSIX.1'') as amended by Cor. 1-2002.

BSD
								 November 12, 2010							       BSD
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