NetNews Usenet Archive 1992 #16/NN_1992_16.iso/spool/comp/unix/shell/3130

Internet Message Format | 1992-07-25 | 1.9 KB

Path: sparky!uunet!autodesk!dansmith
From: [e-mail] (Daniel Smith)
Newsgroups: comp.unix.shell
Subject: Re: setting variable from script to current environment??
Message-ID: <[e-mail]>
Date: 24 Jul 92 22:37:48 GMT
References: <[e-mail]> <[e-mail]> <[e-mail]>
Organization: Autodesk Inc., Sausalito CA, USA
Lines: 43

In <[e-mail]> [e-mail] (Samuel N Kamens) writes:
> One thing to be careful of when you source shells -- if those shells
> have an "exit" in them, that will cause the *PARENT* process to exit.

> I can't count how many times I have sourced a file that did an exit
> and watched my xterm disappear..... :-(


    Right, a good thing to do is have a label to go to at the end:

#!/bin/echo sorry,try:source
if ($#newdir_attempt == 0) then
        echo 'usage: newdir dir_to_make [files to move to dir_to_make]'
        goto nd_end
endif

mkdir $newdir_attempt[1] || goto nd_end
set cd_attempt=$newdir_attempt[1]
if ($#newdir_attempt > 1) then
        shift newdir_attempt
        mv -f $newdir_attempt $cd_attempt
        unset newdir_attempt
endif
pl $cd_attempt

nd_end:


    this example makes a directory, moves any files you specify
into it, and pushd's the new directory (the pl alias).  Called as:

alias newdir 'set newdir_attempt=(\!*); source ~/bin/newdir_csh'

    It's probably good practice to call the end labels something
different in each script, or you may confuse the shell as to which
"end:" you mean.

                Daniel
--
            [e-mail]            [e-mail]
        Daniel Smith, Autodesk, Sausalito, California, [phone] x 2580
              Disclaimer: written by a highly caffeinated mammal
 $|=1;for("..."," hacker"," perl"," a","just"){print $l=$_.$l,"\015";sleep 1;}