Berkeley CSUA MOTD:Entry 32824
Berkeley CSUA MOTD
 
WIKI | FAQ | Tech FAQ
http://csua.com/feed/
2025/05/24 [General] UID:1000 Activity:popular
5/24    

2004/8/11-12 [Computer/SW/Unix] UID:32824 Activity:high
8/11    If I have two libraries libfoo.so.1 and libfoo.so.2, and I do
        something like 'cc foo.c -lfoo', is there a way to specify which
        version of libfoo the linker should link in, without having a
        libfoo.so symlink to the one I want? Thanks.
        \_ How about "cc foo.c libfoo.so.2"?
           \_ That works if I always have the full path handy, but
              how about a way where the linker will still use its search
              path? Thanks.
        \_ This is usually done with symlinks. Create one and be done.
           \_ This is a crappy hack. I'm not saying your answer is wrong, but
              this is a crappy hack.  Matt Dillon has mentioned variable symlinks
              this is a crappy hack. Matt Dillon has mentioned variable symlinks
              (with a fair amount of hand waving) as a possible solution; are
              there any better ones (say for dynamic linking?) -!op
              \_ A crappy hack that every UNIX OS uses.
              \_ what is a variable symlink?
                 \_ a symlink that can do shell variable expansions?
                    \_ I thought symlink extrapolation is at is os level,
                       not shell?
ERROR, url_link recursive (eces.Colorado.EDU/secure/mindterm2) 2025/05/24 [General] UID:1000 Activity:popular
5/24    

You may also be interested in these entries...
2012/8/26-11/7 [Computer/SW/Security] UID:54465 Activity:nil
8/26    Poll: how many of you pub/priv key users: 1) use private keys that
        are not password protected 2) password protect your private keys
        but don't use ssh-agent 3) use ssh-agent:
        1) .
        2) ..
        3) ...
	...
2012/8/29-11/7 [Computer/SW/Security] UID:54467 Activity:nil
8/29    There was once a CSUA web page which runs an SSH client for logging
        on to soda.  Does that page still exist?  Can someone remind me of the
        URL please?  Thx.
        \_ what do you mean? instruction on how to ssh into soda?
           \_ No I think he means the ssh applet, which, iirc, was an applet
              that implemented an ssh v1 client.  I think this page went away
	...
2012/9/20-11/7 [Computer/SW/Unix, Finance/Investment] UID:54482 Activity:nil
9/20    How do I change my shell? chsh says "Cannot change ID to root."
        \_ /usr/bin/chsh does not have the SUID permission set. Without
           being set, it does not successfully change a user's shell.
           Typical newbie sys admin (on soda)
           \_ Actually, it does: -rwsr-xr-x 1 root root 37552 Feb 15  2011 /usr/bin/chsh
	...
2012/9/24-11/7 [Computer/SW/Languages, Computer/SW/Unix] UID:54484 Activity:nil
9/24    How come changing my shell using ldapmodify (chsh doesn't work) doesn't
        work either? ldapsearch and getent show the new shell but I still get
        the old shell on login.
        \_ Scratch that, it magically took my new shell now. WTF?
           \_ probably nscd(8)
	...
2012/3/29-6/4 [Computer/HW/Memory, Computer/HW/CPU, Computer/HW/Drives] UID:54351 Activity:nil
3/29    A friend wants a PC (no mac). She doesn't want Dell. Is there a
        good place that can custom build for you (SSD, large RAM, cheap video
        card--no game)?
        \_ As a side note: back in my Cal days more than two decades ago when
           having a 387SX made me the only person with floating-point hardware,
           most machines were custom built.
	...
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
	...
2012/1/27-3/26 [Computer/SW/Unix] UID:54299 Activity:nil
1/27    Interesting list of useful unix tools. Shout out to
        cowsay even!
        http://www.stumbleupon.com/su/3428AB/kkovacs.eu/cool-but-obscure-unix-tools
        \_ This is nice.  Thanks.
	...
2011/10/26-12/6 [Computer/SW/Unix] UID:54202 Activity:nil
10/24  What's an easy way to see if say column 3 of a file matches a list of
       expressions in a file? Basically I want to combine "grep -f <file>"
       to store the patterns and awk's $3 ~ /(AAA|BBB|CCC)/ ... I realize
       I can do this with "egrep -f " and use regexp instead of strings, but
       was wondering if there was some magic way to do this.
       \_ UNIX has no magic. Make a shell script to produce the ask or egrep
	...
2011/5/19-7/13 [Computer/SW/Languages/Misc] UID:54115 Activity:nil
5/19    If script A runs, and calls script B ..... is it possible for me to exit\
        script A based on results of script B and not continue?
        \_ assume any shell
        \_ Yes.
           \_ without passing the result to some stupid temp file?
              \_ It sounds like you want "scriptb || exit", which will run
	...