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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2012/8/29-11/7 [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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2012/3/29-6/4 [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.
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2010/3/10-30 [Computer/SW/Mail] UID:53751 Activity:nil | 3/10 What email program do people in Cal CS use nowadays? In my school days
people used /usr/bin/mail, then RMail in emacs, then VMail in emacs.
After my days people used Elm, Pine, Mutt (I forgot which order). In
my first two jobs we could tell the seniority of fellow engineers based
on which email program they use at work, because everyone used what
they used to use in their school years. In my last two jobs though,
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2009/11/13-30 [Computer/SW/Unix] UID:53523 Activity:nil | 11/12 How does one find out if a system has rootkit installed?
\_ Unix or m$?
\_ Unix. On M$ I always assume it's compromised.
\_ Install Tripwire before you plug your server into The Net?
The only other answer I can think of is to reinstall the
OS from scratch on another server and do an md checksum
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2009/7/24-29 [Computer/SW/Editors/Vi] UID:53195 Activity:low | 7/24 Is dos2unix available somewhere? Someone added all those Ctrl-M's to
motd.public.
\_ %s/^V^M//g in vim. What has your editor done for you today?
\_ that works great in vi actually... in vim :set filetype=unix
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