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Full Discussion: help with multiline variable in csh
Top Forums Shell Programming and Scripting help with multiline variable in csh Post 302411368 by drl on Thursday 8th of April 2010 10:44:42 AM
Old 04-08-2010
Hi.
Quote:
Originally Posted by anykao
help with multiline variable in csh
My shell is csh and it is required.
The csh / tcsh shells do not lend themselves to do tasks which are far more easily done in the Bourne family shells.

If you must use csh, here are some ideas for you to consider:
Code:
#!/usr/bin/env tcsh

# @(#) s1	Demonstrate lines into multiple-value variable, csh

echo
setenv LC_ALL C ; setenv LANG C
echo "Environment: LC_ALL = $LC_ALL, LANG = $LANG"
echo "(Versions displayed with local utility version)"
sh -c "version >/dev/null 2>&1" && version "=o" tcsh

cat > data1 <<EOF
a b c
e
f
EOF

set x = `cat data1`
echo
echo " x is |$x|"

set x = "`cat data1`"
echo
echo " x is |$x|"

set y = ( "`cat data1`" )
echo
echo " y[1] is |$y[1]|"
echo " y[2] is |$y[2]|"
echo " y[3] is |$y[3]|"
echo " y is |$y[*]|"

echo
foreach item ( $y )
echo " item is $item"
end

echo
@ i = 1
while ( $i <= ${#y} )
echo " item $i is $y[$i]"
@ i++
end

exit 0

producing:
Code:
% ./s1

Environment: LC_ALL = C, LANG = C
(Versions displayed with local utility version)
OS, ker|rel, machine: Linux, 2.6.26-2-amd64, x86_64
Distribution        : Debian GNU/Linux 5.0 
tcsh 6.14.00

 x is |a b c e f|

 x is |a b c e f|

 y[1] is |a b c|
 y[2] is |e|
 y[3] is |f|
 y is |a b c e f|

 item is a
 item is b
 item is c
 item is e
 item is f

 item 1 is a b c
 item 2 is e
 item 3 is f

See man csh for details.

However, as noted frequently in forums, you would be better off using Bourne family shells for scripting.

Good luck ... cheers, drl
 

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LEARN ABOUT SUSE

suspend

suspend(1)                                                         User Commands                                                        suspend(1)

NAME

       suspend - shell built-in function to halt the current shell

SYNOPSIS

   sh
       suspend

   csh
       suspend

   ksh
       suspend

DESCRIPTION

   sh
       Stops the execution of the current shell (but not if it is the login shell).

   csh
       Stop the shell in its tracks, much as if it had been sent a stop signal with ^Z. This is most often used to stop shells started by su.

   ksh
       Stops the execution of the current shell (but not if it is the login shell).

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE         |      ATTRIBUTE VALUE        |
       +-----------------------------+-----------------------------+
       |Availability                 |SUNWcsu                      |
       +-----------------------------+-----------------------------+

SEE ALSO

       csh(1), kill(1), ksh(1), sh(1), su(1M), attributes(5)

SunOS 5.10                                                          15 Apr 1994                                                         suspend(1)
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