OSXFAQ Daily Unix Tricks  

Week 54 - tcsh vs sh/bash (10 August 2003)

by Adrian Mayo - Senior Editor for Mac OS X Unix

Friday - Control Constructs 2 (Looping)

The scripting language of tcsh looks very much like the 'c' programming language (hence the 'c' in tcsh) while sh/bash does not.

'for' loops:

#!/bin/tcsh 
foreach word (hello goodbye au-revoir)
    echo $word
end


#!/bin/sh 
for word in hello goodbye au-revoir
do
  echo $word
done

'while' loops:

#!/bin/sh
n=0
while [ ! $n = 10 ]
do
  echo $n
  n=$(expr $n + 1)
done


#!/bin/tcsh 
set n = 0
while ($n != 10)
  echo $n
  set n = `expr $n + 1`
end

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