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Grepping a huge file (80GB) any way to speed it up?
...l. To grep a big file in parallel use:
< eightygigsfile.sql parallel --pipe grep -i -C 5 'db_pd.Clients'
Depending on your disks and CPUs it may be faster to read larger blocks:
< eightygigsfile.sql parallel --pipe --block 10M grep -i -C 5 'db_pd.Clients'
It's not entirely clear from you...
C# SQL Server - Passing a list to a stored procedure
...
Delimit it with pipes instead.
– Alex In Paris
Nov 18 '16 at 9:14
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Rearrange columns using cut
... Alternatively if you don't want to change the input file, you can pipe it through | sed 's/\r//' | before piping to awk
– jakub.g
Apr 9 '15 at 12:15
2
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TCP loopback connection vs Unix Domain Socket performance
...tency and throughput tests for TCP sockets, Unix Domain Sockets (UDS), and PIPEs.
Here you have the results on a single CPU 3.3GHz Linux machine :
TCP average latency: 6 us
UDS average latency: 2 us
PIPE average latency: 2 us
TCP average throughput: 0.253702 million msg/s
UDS average throughp...
SHFileOperation函数总结（文件夹的移动、复制、删除） - C/C++ - 清泛网 -...
...大小?并取得这个内存块的内容呢?
hNameMappings 是简单LPVOID无法使用loop
要使用hNameMappings，必须定义一个结构体
struct HANDLETOMAPPINGS {
UINT uNumberOfMappings; // number of mappings in array
LPSHNAMEMAPPING lpSHNameMapping; // pointer to array of mappings
};
...
Parsing a CSV file using NodeJS
...ire('csv-parse');
var csvData=[];
fs.createReadStream(req.file.path)
.pipe(parse({delimiter: ':'}))
.on('data', function(csvrow) {
console.log(csvrow);
//do something with csvrow
csvData.push(csvrow);
})
.on('end',function() {
//do something wit...
Bash ignoring error for a particular command
...1.sh
one
two
three will be never printed.
Also, I want to add that when pipefail is on,
it is enough for shell to think that the entire pipe has non-zero exit code
when one of commands in the pipe has non-zero exit code (with pipefail off it must the last one).
$ set -o pipefail
$ false | true ;...
Equivalent of *Nix 'which' command in PowerShell?
... If you want the Unix-style behavior of giving you the path you'll need to pipe the output of get-command to select -expandproperty Path.
– Casey
Jul 29 '15 at 12:37
6
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How can I recursively find all files in current and subfolders based on wildcard matching?
How can I recursively find all files in current and subfolders based on wildcard matching?
16 Answers
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How to remove trailing whitespaces with sed?
...what I needed! The other sed solutions posted had issue integrating with a piped (and piped and piped...) variable assignment in my bash script, but yours worked out of the box.
– Eric L.
Jun 12 '14 at 18:09
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