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Sorting a tab delimited file
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pipe it through something like awk '{ print print $1"\t"$2"\t"$3"\t"$4"\t"$5 }'. This will change the spaces to tabs.
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动态追踪（Dynamic Tracing）技术漫谈 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...大部分问题其实是线上才有的问题，很难复现，或者几乎无法复现。而有些问题出现的比率又很小，只有百分之一、千分之一，甚至更低。我们最好能够不用摘机器下线，不用修改我们的代码或者配置，不用重启服务，在系统还...
Redirect stderr and stdout in Bash
...command which can write/append to several file descriptors(files, sockets, pipes, etc) at once: tee FILE1 FILE2 ... >(cmd1) >(cmd2) ...
exec 3>&1 4>&2 1> >(tee >(logger -i -t 'my_script_tag') >&3) 2> >(tee >(logger -i -t 'my_script_tag') >&4)
trap...
Tar archiving that takes input from a list of files
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You can also pipe in the file names which might be useful:
find /path/to/files -name \*.txt | tar -cvf allfiles.tar -T -
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What is a unix command for deleting the first N characters of a line?
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do you have any idea of why the pipe doesn't work? when i run essentially that command, 'cut' doesn't print the results to stdout ... if i just run 'tail -f logfile | cut -c 5-' i can see the results ... the problem must be with grep i'm using cygwin FYI ...
浅谈TCP优化 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...启动
虽然流量控制可以避免发送方过载接收方，但是却无法避免过载网络，这是因为接收窗口「rwnd」只反映了服务器个体的情况，却无法反映网络整体的情况。
为了避免过载网络的问题，慢启动引入了拥塞窗口「cwnd」的概念...
How to get exit code when using Python subprocess communicate method?
...mport subprocess as sp
child = sp.Popen(openRTSP + opts.split(), stdout=sp.PIPE)
streamdata = child.communicate()[0]
rc = child.returncode
(*) This happens because of the way it's implemented: after setting up threads to read the child's streams, it just calls wait.
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How to show only next line after the matched one?
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Use grep -A1 to show the next line after a match, then pipe the result to tail and only grab 1 line,
cat logs/info.log | grep "term" -A1 | tail -n 1
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Error 908: Permission RECEIVE_SMS has been denied. - App Inventor 2 中...
...其他所有版本的Companion都是从它派生而来的。然而，我们无法通过Play商店分发它（正如我所提到的，我们申请了豁免权，但被拒绝了），所以我们只通过网站分发它。“u”版本的伴侣允许对使用谷歌认为可疑的功能的应用程序...
Repeat command automatically in Linux
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This is useful for if you need to pipe the output somewhere (like bar aint recursive)
– Stephen Smith
Jan 10 '15 at 16:18
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