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How to access command line arguments of the caller inside a function?
...stack" a lot.
#!/bin/bash
function argv {
for a in ${BASH_ARGV[*]} ; do
echo -n "$a "
done
echo
}
function f {
echo f $1 $2 $3
echo -n f ; argv
}
function g {
echo g $1 $2 $3
echo -n g; argv
f
}
f boo bar baz
g goo gar gaz
Save in f.sh
$ ./f.sh arg0 arg1...
How do you tell a specific Delayed::Job to run in console?
...t remember that it won't run any other things like destroying job that was done or so on. just running the job/task.
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How do you grep a file and get the next 5 lines
How do I grep a file for 19:55 and get the Line 1,2,3,4,5?
3 Answers
3
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Why have header files and .cpp files? [closed]
Why does C++ have header files and .cpp files?
9 Answers
9
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How to save username and password with Mercurial?
... a plain text file, it is more secure. It is bundled with TortoiseHg on Windows, and there is currently a discussion about distributing it as a bundled extension on all platforms.
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Disable cache for some images
... this problem that feels like a hack but is fairly portable is to add a randomly generated query string to each request for the dynamic image.
So, for example -
<img src="image.png" />
Would become
<img src="image.png?dummy=8484744" />
Or
<img src="image.png?dummy=371662" />...
Postgres: clear entire database before re-creating / re-populating from bash script
...the database and then re-create it. On a UNIX or Linux system, that should do it:
$ dropdb development_db_name
$ createdb developmnent_db_name
That's how I do it, actually.
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Correct way to write line to file?
I'm used to doing print >>f, "hi there"
14 Answers
14
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Why is string concatenation faster than array join?
...sites
The V8 javascript engine (used in Google Chrome) uses this code to do string concatenation:
// ECMA-262, section 15.5.4.6
function StringConcat() {
if (IS_NULL_OR_UNDEFINED(this) && !IS_UNDETECTABLE(this)) {
throw MakeTypeError("called_on_null_or_undefined", ["String.prototype...
Generating a unique machine id
...ction that generates an id that is unique for a given machine running a Windows OS.
15 Answers
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