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How to document Ruby code?
...to be executed by the system
# +outhandler+:: +Proc+ object that takes a pipe object as first and only param (may be nil)
# +errhandler+:: +Proc+ object that takes a pipe object as first and only param (may be nil)
shar...
Actual meaning of 'shell=True' in subprocess
... are all simple to replace with native Python constructs. A complex shell pipeline where parts or all cannot be reasonably rewritten in Python would be the one situation where perhaps you could consider using the shell. You should still make sure you understand the performance and security implica...
Why does Popen.communicate() return b'hi\n' instead of 'hi'?
...
print(subprocess.Popen("echo -n hi", \
shell=True, stdout=subprocess.PIPE).communicate()[0])
As for the b preceding the string it indicates that it is a byte sequence which is equivalent to a normal string in Python 2.6+
http://docs.python.org/3/reference/lexical_analysis.html#literals
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也来说说ReactOS的调试 - 更多技术 - 清泛网 - 专注C/C++及内核技术
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唉,白呀,打开”文件”?”Connect”,在端口那输入” \\.\pipe\com_1”下面默认,确定
提示
晕,怎么回事?用windbg就可以啦.打开源码看看,(有源代码就是好,^_^);这个程序的代码很少.
看到这,就知道怎么回事了(注意这段在D:\ReactOS\...
Does git return specific return error codes?
... are
lost.
The first way is when a command is in the upstream of a pipe. In a
pipe, only the return code of the last command is used. Thus, all other
commands will have their return codes masked.
Rewrite pipes so that there are no Git commands upstream.
The other way is when a com...
How to use find command to find all files with extensions from list?
...not work for me on mac, but works with the -E (extended) option (maybe the pipe is an extended feature?): find -E /path/to -iregex ".*\.(jpg|gif|png|jpeg)" > log
– ling
Oct 21 '15 at 7:38
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How to count lines in a document?
... < <filename>:
$ wc -l < /dir/file.txt
3272485
You can also pipe data to wc as well:
$ cat /dir/file.txt | wc -l
3272485
$ curl yahoo.com --silent | wc -l
63
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周鸿祎创业以来的“六大战役” 酷派会是最后一战 - 资讯 - 清泛网 - 专注C/...
...0软件的电脑上停止运行QQ软件，用户必须卸载360软件才可登录QQ，强迫用户“二选一”。双方为了各自的利益，从2010年到2014年，两家公司上演了一系列互联网之战，并走上了诉讼之路。
双方互诉三场，最终奇虎360败诉。其中奇...
Count number of rows within each group
I have a dataframe and I would like to count the number of rows within each group. I reguarly use the aggregate function to sum data as follows:
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Set the value of a variable with the result of a command in a Windows batch file
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Note that if your command includes a pipe then you need to escape it with a caret, for example: for /f "delims=" %%a in ('echo foobar^|sed -e s/foo/fu/') do @set foobar=%%a
– yoyo
Apr 21 '15 at 22:42
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