Intel XENIX 286 Programmers Guide (86) - Tenox.tc

XENIX Programming
switch ( string
case string 1:
commands
breaksw
case stringn:
commands
breaksw
default:
commands
breaksw
endsw
csh: C Shell
For details see csh in Appendix B. C programmers should note that breaksw is used to
exit from a switch while break exits from a while or foreach loop. A common mistake
to make in C shell scripts is to use break rather than breaksw in switches.
Finally, the C shell supports a goto statement, with labels looking like they do in C, e.g.:
loop:
commands
goto loop
Supplying Input to Commands
Commands run from C shell scripts receive by default the standard input of the C shell
running the script. This feature enables C shell scripts to fully participate in pipelines
but mandates extra notation for commands that take inline data.
Thus we need a metanotation for supplying inline data to commands in C shell scripts.
For example, consider this script that runs the editor to delete leading blanks from the
lines in each argument file:
# deblank -- rem ove leading blanks
foreach i ($argv)
ed - $i