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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2011/12/23-2012/2/6 [Computer/SW/Languages/Python] UID:54272 Activity:nil | 12/23 In Python, why is it that '好'=='\xe5\xa5\xbd' but
u'好'!='\xe5\xa5\xbd' ? I'm really baffled. What
is the encoding of '\xe5\xa5\xbd'?
\_ '好' means '\xe5\xa5\xbd', which is just a string of bytes; it has
length 3. Python doesn't know what encoding it's in. u'好' means
u'\u597d', which is a string of Unicode characters; it has length 1,
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2011/4/16-7/13 [Computer/SW/Languages/Python] UID:54086 Activity:nil | 4/16 Whoa, I just heard that MIT discontinued 6.001 (classic scheme)
to 6.01. In fact, 6.00, 6.01 and 6.02 all use Python. What the
hell? What has the world become? It's a sad sad day. SICP forever!
\_ old story, they've ditched that shitty book and lang for a while.
\_ I used to think scheme was cool, then I saw Ka Ping Yee's
"Beautiful Code" class aka 61a in python, and converted.
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2011/2/24-4/20 [Computer/SW/Languages/Java] UID:54048 Activity:nil | 2/24 Go Programming Language. Anyone here use it? It kind of
reminds me of java-meets python, and well, that is fitting given it's
a GOOG product. What is so special about it?
\_ as I understand it, it's a suitable OOP-y systems language with more
structure than C, less complexity than C++, and less overhead than
Java/Python.
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2011/3/31-4/20 [Computer/SW/Languages/Python] UID:54070 Activity:nil | 3/20 Has anyone here had success in using python 3.0? Any gotchas
to worry about? I've got an entire set of apps in python 2.x
and am wondering if it's worth it to upgrade?
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2010/8/8-9/7 [Computer/SW/Languages/C_Cplusplus, Computer/SW/Languages/Web] UID:53914 Activity:nil | 8/8 Trying to make a list of interesting features languages have
touted as this whole PL field comes around, trying to see if they
have basis in the culture of the time: feel free to add some/dispute
1970 C, "portability"
1980 C++, classes, oop, iterators, streams, functors, templates
expert systems
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2010/8/12-9/7 [Computer/SW/Languages/Perl] UID:53922 Activity:nil | 8/12 Ruby coders, do you mostly DIY your stuff or use the ruby libs out
there? How is their quality compared to other libs you have used
for other langs? Thx.
\_ I use Ruby for hobby stuff, etc. I use libraries for system stuff
(web access, process, etc.) but that's about it. Perl libraries are
much better/more complete. I assume because of the maturity and
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