大约有 44,000 项符合查询结果（耗时：0.0280秒） [XML]
Where can I set environment variables that crontab will use?
...
Have 'cron' run a shell script that sets the environment before running the command.
Always.
# @(#)$Id: crontab,v 4.2 2007/09/17 02:41:00 jleffler Exp $
# Crontab file for Home Directory for Jonathan Leffler (JL)
#-----------------------------...
Get just the filename from a path in a Bash script [duplicate]
...
Not the answer you're looking for? Browse other questions tagged bash scripting shell or ask your own question.
What does a Ajax call response like 'for (;;); { json data }' mean? [duplicate]
...to this mechanism.
These infinite loops are a countermeasure against "Javascript hijacking", a type of attack that gained public attention with an attack on Gmail that was published by Jeremiah Grossman.
The idea is as simple as beautiful: A lot of users tend to be logged in permanently in Gmail o...
Bash syntax error: unexpected end of file
Forgive me for this is a very simple script in Bash. Here's the code:
19 Answers
19
...
Passing arguments to “make run”
...
TL;DR don't try to do this
$ make run arg
instead create script:
#! /bin/sh
# rebuild prog if necessary
make prog
# run prog with some arguments
./prog "$@"
and do this:
$ ./buildandrunprog.sh arg
answer to the stated question:
you can use a variable in the recipe
run: pr...
Naming “class” and “id” HTML attributes - dashes vs. underlines [closed]
...
Use Hyphens to ensure isolation between your HTML and JavaScript.
Why? see below.
Hyphens are valid to use in CSS and HTML but not for JavaScript Objects.
A lot of browsers register HTML Ids as global objects on the window/document object, in big projects, this can become a real ...
What is a Y-combinator? [closed]
... return n * recurse(recurse)(n - 1);
}})(
5
);
Feel free to try it. alert() that return, tie it to a button, whatever.
That code calculates factorials, recursively, without using
assignment, declarations, or functions of 2 variables. (But
trying to trace how it works is likely to make your h...
What are the special dollar sign shell variables?
...f the most recent background command.
$0 is the name of the shell or shell script.
Most of the above can be found under Special Parameters in the Bash Reference Manual. There are all the environment variables set by the shell.
For a comprehensive index, please see the Reference Manual Variable In...
Python circular importing?
... function call, def, class). Assuming your imports occur at the top of the script, then here's what's happening:
When you try to import World from world, the world script gets executed.
The world script imports Field, which causes the entities.field script to get executed.
This process continues u...
Understanding reference counting with Cocoa and Objective-C
...ive, when autorelease is called, the current thread's NSAutoreleasePool is alerted of the call. The NSAutoreleasePool now knows that once it gets an opportunity (after the current iteration of the event loop), it can call release on the object. From our perspective as programmers, it takes care of...