2012/5/8-6/4 [Computer/SW/Unix] UID:54383 Activity:nil | 5/8 Hello everyone! This is Josh Hawn, CSUA Tech VP for Spring 2012.
About 2 weeks ago, someone brought to my attention that our script
to periodically merge /etc/motd.public into /etc/motd wasn't
running. When I looked into it, the cron daemon was running, but
there hadn't been any root activity in the log since April 7th. I
looked into it for a while, but got lost in other things I was
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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
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2011/7/30-8/10 [Computer/SW/Languages/Misc] UID:54148 Activity:nil 66%like:54150 | 7/29 Happy Sysadmin Day
\_ our "sysadmin" today deleted /home. When we asked her why
she said she didn't do it. When I checked the sudo logs,
I found these two commands in order:
COMMAND=/bin/rm -r /home testuser
COMMAND=/bin/rm -r /home/testuser
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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
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2010/4/22-5/10 [Computer/SW/Languages/Misc] UID:53797 Activity:nil | 4/22 In Linux is there an easy way to rename the scripts in /etc/rc?.d ?
For example I want to set all the /etc/rc?.d/S91apache to S100apache
so that it'll run the ramdisk BEFORE going to apache.
\_ Sure, just move them.
\_ I mean is there a script that will rename all of them
for me? Like: setrc apache2 0 0 1 1 1 1
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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!
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2009/5/5-6 [Computer/HW/Laptop] UID:52950 Activity:moderate | 5/5 Is there a good (or standard) way to make an offline copy of a w
ordpress blog (mine, not someone else's)? tia.
\_ oh man.
\_ I could cobble something together with curl / wget, but I'd
rather not if there is a standard way of doing this. I'm
pretty new to wordpress / blogging and I just want to keep
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2009/1/14-22 [Computer/SW/Languages/Perl, Computer/SW/Languages/Misc] UID:52378 Activity:nil | 1/13 I want to extract a couple integer from an xml file, mainly,
xml file from http://weather.com so I can put it on my xplanet marker
file. has anyone done similar things (parse and extract data
from xml) using shell script instead of python/perl?
in the world of perl, it make sense to dump things into a hash
which i can easily extract key/value pair. can i achieve similar
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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) ...
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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
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2012/7/18-8/19 [Health/Men, Computer/SW/Security] UID:54438 Activity:nil | 7/18 "Largest penis record holder arouses security suspicions at airport"
http://www.csua.org/u/x2f (in.news.yahoo.com)
\_ I often have that same problem.
\_ I think the headline writer had some fun with that one.
\_ One time when I glanced over a Yahoo News headline "U.S. busts
largest-ever identity theft ring" all I saw was "U.S. busts
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2012/4/23-6/1 [Computer/SW/WWW/Browsers] UID:54360 Activity:nil | 4/19 My Firefox 3.6.28 pops up a Software Update box that reads "Your
version of Firefox will soon be vulnerable to online attacks." Are
they planning to turn off some security feature in my version of
Firefox?
\_ Not as such, no, but they're no longer developing this version,
so if a 3.6.x-targeted hack shows up, you're not going to get
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2011/4/27-7/30 [Computer/SW/Security, Computer/SW/Unix] UID:54096 Activity:nil | 4/28 Will wall be fixed? - jsl
\_ What's wall?
\_ An anachronism from a bygone era, when computers were hard to
comeby, the dorms didn't have net, there was no airbears, and
when phones didn't come standard with twitter or sms.
\_ A non useful implementation of twitter.
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2009/8/21-9/1 [Computer/SW/Unix] UID:53297 Activity:nil | 8/20 When I use rsync to backup, it's pretty cool except in cases where
I rename a directory name from the source. Rsync will just do
a plain copy. Is there a program that'll detect renaming of
directories (by checking for children files), or at least
move them to a dated directory?
\_ Not related but beware of using rsync as a backup tool.
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2009/7/17-24 [Computer/SW/OS/OsX] UID:53156 Activity:kinda low | 7/17 -rw-r--r--@
What does the "at sign" mean? This is on Mac OS. VMWare disk file.
\_ The file has metadata attributes
\_ How do I add/delete attributes to files? What about
-rw-r--r--+ <-- what is the "+" sign? Also how do you make
tar preserve these attributes?
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2009/7/8-16 [Computer/SW/OS/Linux, Computer/SW/Unix] UID:53124 Activity:nil | 7/7 what happened to our web presence? http://www.csua.berkeley.edu
not working
\_ That would be because we've yet to set them up afaik. Steven *does* have
a job after all. The idea is that we want a separate computer mounting the
web directories, so that if an exploit compromises the webserver, the shell
server (soda) itself will be insulated from the attack.
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2009/6/29-7/3 [Computer/SW/Security] UID:53083 Activity:low 53%like:53089 | 6/28 Hello everyone,
Logins to soda are back open. The new ssh key is
2048 4b:96:67:18:27:da:XX:XX:XX:XX:XX:XX:XX:XX:XX:XX
Please allow public key authentication since it is more secure
than plain password. Also if you see this posting, it means
anybody could have posted the annoucement. Because the
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2009/6/29-7/3 [Computer/SW/Security] UID:53089 Activity:nil 53%like:53083 | 6/29 Please allow public key authentication since it is more
secure than plain password. If you see this posting, it
means anybody could have posted the annoucement. Because
the official csua web site is still down., this makes it a
little suspicious to the truly paranoid.
p.s. this web entry format is counter intuitive. And how come
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2009/2/26-3/5 [Computer/SW/Unix] UID:52653 Activity:nil | 2/26 If I want to rsync a perforce or svn directory while users
are checking things in, could I wind up with a corrupted copy?
\_ sure why not. if you are really cool, your copy of the svn
repo is on LVM, and you snap the LVM to copy it.
\_ It'll seem less cool when you realize you've taken a snapshot
of a block level device, which only guarantees that this set of
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