Berkeley CSUA MOTD:Entry 35369
Berkeley CSUA MOTD
 
WIKI | FAQ | Tech FAQ
http://csua.com/feed/
2025/07/09 [General] UID:1000 Activity:popular
7/9     

2004/12/21 [Computer/SW/Unix] UID:35369 Activity:nil
12/20   Dear Mr. tcsh, here is a puzzle.  I have a tcsh script that runs fine,
        but when I use "tcsh -n" to check its syntax it always fail with.
          [xxx-xx]if ( ${?prompt} ) then
          [xxx-xx]tcsh: ${?prompt}: No match.
        (I have turned on -v switch.)  What's wrong?
        \-while i no longer follow tcsh code closely, there have been
          some globbing bugs [the way stuff should be parsed is a little
          bit vague in csh] ... that's what i suspect you are hitting.
          this isn't worth tracing at the code level.
        \_ I used to use tcsh before I switched to zsh.
           zsh is great: all the interactive features of tcsh,
           but bash compatibility. And you can make really cool prompts.
2025/07/09 [General] UID:1000 Activity:popular
7/9     

You may also be interested in these entries...
2012/4/27-6/4 [Computer/SW/Languages/Misc, Computer/SW/Unix] UID:54372 Activity:nil
4/27    I wrote a little shell script to collect iostat data:
        #!/bin/bash
        DATE=`date +%m%d`
        DATADIR=/var/tmp/user
        OUTPUTFILE=$DATADIR/$DATE.out
        while true
	...
2009/12/9-2010/1/13 [Computer/SW/Unix] UID:53586 Activity:nil
12/8    Is there a bash equivalent to tcsh's history-search-backward ?
        \_ There's something similar called... history-search-backward. It
           is a bit more limited, in that it only searches for strings and
           not glob patterns. You may find reverse-i-search to be useful also.
	...
2009/10/27-11/3 [Computer/SW/Unix] UID:53475 Activity:nil
10/27   http://www.maxgames.com/play/flash-mind-reader.html
        how does this work?
        \_ sh -c 'for ((i=0;i<10;i++)); do for ((j=0;j<10;j++)); do echo "$i$j-(\
$i+$j)" | bc; done ; done' | uniq
        \_ bash -c 'for ((i=0;i<10;i++)); do for ((j=0;j<10;j++)); do echo "$i$j\
-($i+$j)" | bc; done ; done' | uniq
	...
2009/8/18-9/1 [Computer/SW/Unix] UID:53284 Activity:nil
8/18    Is it possible to truncate your path name in your prompt in tcsh?
        Tsch veterans REPRESENT!  I know this is how to do it in bash:
        # truncate path: returns $1 truncated to $2 chars, prefixed with ...
        truncate_path () {
                if [ -z "$1" -o -z "$2" ]
                then
	...
2009/8/19-9/1 [Computer/SW/Unix] UID:53285 Activity:nil
8/18    Hi again, new freebsd guy here again, in bash I was able to go
        LD_LIBRARY_PATH=/opt/foo/lib ./runmyapp
        I managed to do this in tcsh by using setenv in a shell script
        that setenv's the lib path and then executes $1, just wondering
        if there was a way to do it in 1 line from the cmd line as in bash?
        Thanks, btw %2c or %3c worked.  Freebsd, tcsh and vi forever!
	...
2009/1/20-26 [Computer/SW/Unix] UID:52420 Activity:low
1/20    I have a rather common shell-scripting problem, but I am not sure
        how to do it in csh/tcsh.  I want to check the ctime (last
        modified time) of a file.  If it is older than, let say, 1
        hours, do something, older than 3 hours, then do something +
        something else.  Any hints on how to do this?  do i need to
        convert it to epoch to perform such manipulation?  thanks
	...
2009/1/20-26 [Computer/SW/Languages/Java, Computer/SW/Languages/Misc] UID:52425 Activity:nil
1/20    I've been using tcsh as shell program tool (i know, bad shell to
        do scripting).  One thing I've noticed when I extract xml file
        is that the variable type automatically change from
        integer/string to... almost an array-like data structure when
        the output of the xml key/value is more than one (it's more
        like a string separated by space, but I was very impressed as
	...
2009/1/13-22 [Computer/Theory] UID:52367 Activity:kinda low
1/13    I am writing a commandline parser for a class and I could use some
        tips for algorithms to use. (The project is over and done so I am
        not cheating, but I am dissatisfied with my end result.) I STFW and
        didn't come up with too much I liked. I read the source for some
        shells like tcsh and that is *WAY* too complicated and relies on
        a lot of other code. I know that browsers and other apps have
	...
2009/1/5-8 [Computer/SW/Unix] UID:52313 Activity:kinda low
1/3     no hurry but do you know of:
        $ chsh
        Password:
        Enter the new value, or press return for the default
         Login Shell [/usr/local/bin/bash]: /bin/zsh
        failed: Insufficient access
	...
2008/11/24-28 [Computer/SW/Unix] UID:52090 Activity:nil
11/23   How do you find the max # of forkable threads in a unix
        environment? Is it system or user based?
        \_ getrlimit, or ulimit -a (in bash)
	...