bash wait seconds

Bash Shell and bashshellI,Terminal Printing [Root @ cai ~] # Echo welcome to bash! Welcome to bash!   [Cairui @ cai ~] $ Echo 'Welcome to bash! ' Welcome to bash!   [Cairui @ cai ~] $ Echo "welcome to bash \! " Welcome to bash \! (Note: special

Debian7 offline upgrade bash vulnerability-refix method, debian7bash ### The old saying yesterday is that we need to release a new patch. Today we are all released. The basic operation is the test results are different. Continue to fix the bash

BASH command and usage summary, bash usage Summary I need to write a Linux script in my recent work and use a lot of BASH commands. To avoid forgetting it later, I will write them down here one by one. It may be messy. Just take a look. If something

1. Conditional Variable replacement:BASH Shell can replace the conditions of a variable. It can be replaced only when a condition occurs.Put the condition in.(1) $ {value:-word}If the variable is undefined or the value is null, the return value is

A Bash Script: A while loop in the Loop Structure Like other languages, the Bash loop structure also contains the while statement.Basic Structure While condition do loop body done Like the for statement, its loop body is also do... Done structure.

It takes some time for BASH Shell to have a complete and in-depth understanding, but sometimes it is necessary to quickly master its basic usage and write simple programs to meet the needs of the project, then you can read the following article,

1. Legal shell and/etc/shells functions     shell has multiple versions, including Bourne Shell (SH), C shell, K-Shell, tcsh, etc. Normally Linux uses the Bourne Again Shell (Bash), which is the enhanced version of SH       can check/etc/shells to

$* Include all command-line arguments as a single text value [Email protected] Include all command-line arguments as separate text values $# Number of command-line arguments $? Exit

Advanced Bash script, classic usage and cases, advanced bashIn linux, Bash scripts are very basic knowledge. You may feel very high when you listen to the scripts. Just like starting from the beginning, you may feel that script writing is a great

Bash shell for concurrent multi-process operationsPrefaceCurrently, I have mastered the basic language, php (most familiar with the code in the project), bash shell (O & M tool), and c (acm dedicated ), it seems that only c can implement