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How do I fetch lines before/after the grep result in bash?
...e the -B and -A to print lines before and after the match.
grep -i -B 10 'error' data
Will print the 10 lines before the match, including the matching line itself.
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How to iterate over arguments in a Bash script
I have a complex command that I'd like to make a shell/bash script of. I can write it in terms of $1 easily:
8 Answers
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File being used by another process after using File.Create()
...t if a file exists at runtime, if not, create it. However I'm getting this error when I try to write to it:
10 Answers
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How to pass in password to pg_dump?
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I always got the error 'Peer authentication failed for user "username"'. Solution was: PGPASSWORD="mypass" pg_dump -U username -h localhost > mydb.dump
– Martin Pabst
Sep 11 '17 at 16:18
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Secure random token in Node.js
...nc */
function randomString(length, chars) {
if (!chars) {
throw new Error('Argument \'chars\' is undefined');
}
var charsLength = chars.length;
if (charsLength > 256) {
throw new Error('Argument \'chars\' should not have more than 256 characters'
+ ', otherwise unpredictab...
How to create a file in memory for user to download, but not through server?
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Other answers led to Failed: network error in Chrome. This one works well.
– juniper-
Sep 27 '17 at 19:25
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Most efficient way to cast List to List
...If you heed compiler warnings about type safety, you will avoid these type errors at runtime.
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PHP - Extracting a property from an array of objects
...ray_map with create_function in it you will always get an Out of memory... error sometime. So don't use create_function and use array_map(function($o) { return $o->id; }, $objects);
– algorhythm
Sep 12 '14 at 11:47
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How can I run a PHP script in the background after a form is submitted?
...inoisstate.edu/2049 (SCRIPT: 38.71 seconds)
[2011-01-07 11:01:34] CRITICAL ERROR: Alert Notifications NOT sent for http://alerts.illinoisstate.edu/2049 (SCRIPT: 23.12 seconds)
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Allow CORS REST request to a Express/Node.js application on Heroku
...NS request, try to check developer tools console. WebKit logs this kind of errors to web inspector's console.
– Olegas
Nov 24 '12 at 20:13
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