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Meaning of “[: too many arguments” error from if [] (square brackets)
...e test: [ ... -a ... ]
Here is a working command (searching through all txt files in a directory, and dumping those that grep finds contain both of two words):
find /usr/share/doc -name '*.txt' | while read file; do \
a1=$(grep -H "description" $file); \
a2=$(grep -H "changes" $file); \
[ ...
Get just the filename from a path in a Bash script [duplicate]
...or a very similar purpose (and dirname for the path):
pax> a=/tmp/file.txt
pax> b=$(basename $a)
pax> echo $b
file.txt
That unfortunately just gives you the file name, including the extension, so you'd need to find a way to strip that off as well.
So, given you have to do that anyway, y...
TortoiseGit not showing icon overlays
....
You can run the following command in a DOS prompt:
regedit /e c:\icons.txt HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\ShellIconOverlayIdentifiers
Then open the file C:\icons.txt. Skip the first two lines, and if 1TortoiseNormal and the other *Tortoise* values are not ...
Controlling a USB power supply (on/off) with Linux
... need to change usb1 to usb n)
Source: Documentation/usb/power-management.txt.gz
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Remove Object from Array using JavaScript
...mat(obj) {
return JSON.stringify(obj, null, " ");
}
function log(...txt) {
document.querySelector("pre").textContent += `${txt.join("\n")}\n`
}
function getArray() {
return [ {name: "Kristian", lines: "2,5,10"},
{name: "John", lines: "1,19,26,96"},
{name: "Br...
Reading specific lines only
... of offering another solution:
import linecache
linecache.getline('Sample.txt', Number_of_Line)
I hope this is quick and easy :)
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Why is try {…} finally {…} good; try {…} catch{} bad?
...following construct:
using (StreamReader reader=new StreamReader("myfile.txt"))
{
}
As the using statement is automatically wrapped in a try / finally and the stream will be automatically closed. (You will need to put a try / catch around the using statement if you want to actually catch the exc...
How to merge YAML arrays?
...t on the question).
Working example that we use to support requirements.txt having private repos from gitlab:
.pip_git: &pip_git
- git config --global url."https://gitlab-ci-token:${CI_JOB_TOKEN}@gitlab.com".insteadOf "ssh://git@gitlab.com"
- mkdir -p ~/.ssh
- chmod 700 ~/.ssh
- echo "$SSH_K...
Fastest way to tell if two files have the same contents in Unix/Linux?
... call it for example script.sh and then run it as follows: script.sh file1.txt file2.txt
#!/bin/bash
file1=`md5 $1`
file2=`md5 $2`
if [ "$file1" = "$file2" ]
then
echo "Files have the same content"
else
echo "Files have NOT the same content"
fi
...
Parsing huge logfiles in Node.js - read in line-by-line
...eReader = require('line-by-line'),
lr = new LineByLineReader('big_file.txt');
lr.on('error', function (err) {
// 'err' contains error object
});
lr.on('line', function (line) {
// pause emitting of lines...
lr.pause();
// ...do your asynchronous li...