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Top Forums UNIX for Dummies Questions & Answers Modifying from borne shell to C shell Post 2180 by zenkisoft on Wednesday 25th of April 2001 09:56:20 PM
Old 04-25-2001
Data

Just want to know a few conversion tricks.

in Borne Shell, I have the line:

if test -s testmap
then
...
fi
## testmap is a filename and I wanna test whether it exists
## then do whatever
How can I convert that to C Shell?
I've tried:
if (test -s testmap) then
...
endif
but it doesn't work. Says if: invalid expression.

Also, in Borne Shell, if I run a program called 'agent' in the background by typing in:
agent &
And it's process ID is stored in the variable $! and I can actually print it in Borne Shell.

But it seems that $! doesn't exists at all in C Shell. How can I do the similar thing in C Shell?

Thanks.
 

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shells(4)							   File Formats 							 shells(4)

NAME
shells - shell database SYNOPSIS
/etc/shells DESCRIPTION
The shells file contains a list of the shells on the system. Applications use this file to determine whether a shell is valid. See getuser- shell(3C). For each shell a single line should be present, consisting of the shell's path, relative to root. A hash mark (#) indicates the beginning of a comment; subsequent characters up to the end of the line are not interpreted by the routines which search the file. Blank lines are also ignored. The following default shells are used by utilities: /bin/bash, /bin/csh, /bin/jsh, /bin/ksh, /bin/ksh93, /bin/pfcsh, /bin/pfksh, /bin/pfsh, /bin/sh, /bin/tcsh, /bin/zsh, /sbin/jsh, /sbin/sh, /usr/bin/bash, /usr/bin/csh, /usr/bin/jsh, /usr/bin/ksh, /usr/bin/ksh93, /usr/bin/pfcsh, /usr/bin/pfksh, /usr/bin/pfsh, and /usr/bin/sh, /usr/bin/tcsh, /usr/bin/zsh, and /usr/sfw/bin/zsh. /etc/shells overrides the default list. Invalid shells in /etc/shells could cause unexpected behavior, such as being unable to log in by way of ftp(1). FILES
/etc/shells list of shells on system SEE ALSO
vipw(1B), ftpd(1M), sendmail(1M), getusershell(3C), aliases(4) SunOS 5.11 20 Nov 2007 shells(4)
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