大约有 2,100 项符合查询结果（耗时：0.0133秒） [XML]
Is there a way to 'uniq' by column?
I have a .csv file like this:
8 Answers
8
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What's the difference between “Write-Host”, “Write-Output”, or “[console]::WriteLine”?
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Write-Output should be used when you want to send data on in the pipe line, but not necessarily want to display it on screen. The pipeline will eventually write it to out-default if nothing else uses it first.
Write-Host should be used when you want to do the opposite.
[console]::WriteL...
How to process each line received as a result of grep command
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The problem with this method is that (because of the pipe) everything inside the loop is in a subshell, so setting variables defined outside the loop during the loop does not make their values available after the loop!
– David Doria
Jan 24...
How to apply shell command to each line of a command output?
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ls automatically does -1 in a pipe.
– Paused until further notice.
Apr 26 '10 at 3:48
5
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How do I find the width & height of a terminal window?
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This style cannot work with PIPE, suggest use tput style.
– liuyang1
Jul 14 '15 at 12:34
6
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构建高并发高可用的电商平台架构实践 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...子执行的方式，在大量并发的操作下，这种阻塞的方式，无法有效的及时释放资源给其他进程执行，这样系统的吞吐量不高。
需要把业务进行逻辑的分段，采用异步非阻塞的方式，提高系统的吞吐量。
随着数据量和并发量的...
Git: list only “untracked” files (also, custom commands)
...cked files try:
git ls-files --others --exclude-standard
If you need to pipe the output to xargs, it is wise to mind white spaces using git ls-files -z and xargs -0:
git ls-files -z -o --exclude-standard | xargs -0 git add
Nice alias for adding untracked files:
au = !git add $(git ls-files -o...
Easiest way to copy a table from one database to another?
...l access you may use mysqldump to dump the content of database1.table1 and pipe it to mysql to database2. The problem here is that table1 is still table1.
mysqldump --user=user1 --password=password1 database1 table1 \
| mysql --user=user2 --password=password2 database2
Maybe you need to rename ta...
Compiling with g++ using multiple cores
...you want 4 parallel jobs from make:
make -j 4
You can also run gcc in a pipe with
gcc -pipe
This will pipeline the compile stages, which will also help keep the cores busy.
If you have additional machines available too, you might check out distcc, which will farm compiles out to those as wel...
Block Comments in a Shell Script
...ends up highlighting the beginning of every line, add |noh to the end. The pipe separates additional commands and noh is for nohighlight. Search term highlighting will automatically resume the next time you search for something. Example: :10,100s/^/#/g|noh
– Matthew
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