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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2010/2/8-18 [Computer/SW/Apps/Media, Computer/SW/Apps] UID:53695 Activity:kinda low | 2/5 I like Adobe Flash. When written correctly, it scales along
with your browser size. It looks consistent on every single
browser. It is predictable. On the other hand, I'm not a big
fan of CSS/HTML, which for the most part, look wildly different
between browsers, and don't even work consistently or
correctly at times. So why do so many people (like Steve Jobs)
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2009/4/20-23 [Computer/SW/Database] UID:52876 Activity:nil | 4/19 ORCL u SUNW = ORCL.
What is Larry Ellison thinking? What is he going to do with a bunch of
legacy Sun hardware that no one uses anymore, its fading workstation
customer base, and open source Sun MySQL that doesn't even generate
revenue? I really don't get all this acquisition business.
\_ A lot of big companies still use big, fat Sun hardware. Or use
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2009/1/15-23 [Computer/SW/OS/OsX] UID:52398 Activity:nil | 1/15 can any serious development be done on OSX that is not *for OSX*.
i'll grant that ruby on rails has excellent tutorials for the mac.
discuss:
\_ What kind of serious development? If you want to use the standard
OSX ui then your ui code will be pretty much useless elsewhere,
but that's why concepts like MVC are so important. Otherwise
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2008/11/29-12/6 [Computer/SW/OS/FreeBSD, Computer/SW/OS/VM] UID:52129 Activity:moderate | 11/29 I'm experimenting with virtualization, and as a poor college student
I'm wondering what the best alternatives for virtualization are, and
how best to cut my teeth on messing with non-linux platforms (or I
guess interesting stuff on Linux would work too). Right now I've got
FreeBSD7 running on KVM on my home computer (on a Core 2 Quad), and am
somewhat at a loss as to how to use it. (More details: bridged
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2008/11/14-26 [Computer/SW/OS/Linux, Computer/SW/OS/Solaris] UID:51989 Activity:moderate | 11/14 lulz why doesn't GOOG buy JAVA i mean SUN i mean whatever the hell they
are these days.
\_ Even GOOG isn't THAT stupid
\_ Sorry, but WHY would Google do something like that? They
run 99.2% Linux servers on the backend. They don't use
Solaris for development. I mean, what does Sun have to
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2008/9/24-29 [Computer/SW/OS/Windows, Computer/SW/OS/Solaris] UID:51283 Activity:nil | 9/24 Why is nscd going crazy? DoS?
\- back in the solaris say 2.5-2.6 era, it had both some bugs
(some malformed nis maps made it go crazy) and architectural
flaws in the IPC/door+threading mechanism. if you are running
OS-recent, dunno, but you can trace it.
\_ Yeah, I think it's just buggy. I've restarted it, and it seems
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2008/3/30-4/6 [Computer/SW/OS/Solaris] UID:49614 Activity:nil | 3/30 Question: I just deleted 60 GB of files from an 80 GB disk. The
disk activity lights were blinking like crazy and I could hear the
drive crunch while the data was deleted. This is under Solaris.
Anyway, I think UNIX uses unlink() when files are deleted. Shouldn't
it just update the free list on the superblock and call it a day?
What is all the crunching about?
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2007/11/27-30 [Computer/SW/Languages/C_Cplusplus, Computer/SW/OS/Solaris] UID:48701 Activity:high | 11/27 I'm using select to do a nonblocking check to see if a single socket
has anything to read off it. Problem is, I can have up to 12228
file descriptors, and Linux fd_set only supports up to 4096. Any idea
what I can do about this? (Or a better solution?) -jrleek
\- 1. who are you
2. i am busy this week and you didnt mention language
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