Shell Programming and Scripting

#!/usr/bin/env tcsh

# @(#) s2	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

sed -i 's/^$/#/' data1

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[$i]|, before test and change."
if ( "$y[$i]" =~ "#*" ) set y[$i] = ""
echo " item $i is |$y[$i]|, after  test and change."
@ i++
end
echo " The || symbols may be removed, they are there for emphasis."

exit 0

% ./s2

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 |#|
 y is |a b c e # f|

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

 item 1 is |a b c|, before test and change.
 item 1 is |a b c|, after  test and change.
 item 2 is |e|, before test and change.
 item 2 is |e|, after  test and change.
 item 3 is |#|, before test and change.
 item 3 is ||, after  test and change.
 item 4 is |f|, before test and change.
 item 4 is |f|, after  test and change.
 The || symbols may be removed, they are there for emphasis.

 
set x = ( "`isql -Uu -Pp -Ss`" )