Shell

SHC can be used to encrypt shell scripts, which can be converted into an executable binary file. After SHC the shell script, it generates two new files at the same time, one is the encrypted executable binary (the filename ends with. x), and the

Create child process, parent process exitsThis is the first step in the process of writing a daemon. Since the daemon is detached from the control terminal, the first step is to create the illusion that a program has been completed in the shell

Iterating and traversing the lines, words, and characters in a file is a very common operation when you are working on a text file. Using a simple loop for iterations, plus a redirection from stdin or files, is the basic way to iterate through the

The string interception of Linux is useful. There are eight different ways. Suppose there are variable var=http://www.aaa.com/123.htm. 1. # Intercept, delete left character, keep right character. Copy Code code as follows: Echo

1. Judging variables Copy Code code as follows: Read-p "Input a word:" Word if [!-n "$word"]; then echo "You have not input a word!" Else echo "The word you are $word" Fi 2. Judging input parameters Copy

$ #代表了命令行的参数数量, you can look at the following examples: Copy Code code as follows: If [$#!= 1]; Then echo "USAGE: $ tabname" echo "e.g.: $ cdr_call_20040701" Exit 1; Fi Position parameters $,..., $N, $ #代表了命令行的参数数量,

Using the shell to test the download under Linux, the code is as follows: Copy Code code as follows: #!/bin/bash #date: 20140210 #used for test server download speed R_host= "188.18.28.19" R_dir= "/home/test0208/tmp" r_file= "$r _dir/

I remember last year when I was looking for a job interview, I heard a classmate say that he likes Linux very much, I believe what he said is true, I think the people who like Linux are very happy from the shell script, because it can integrate the

1, configure multiple server logs as long as the $website variable is incremented and separated by a space.2, looping to create the log directory3, after the split with XZ compression, of course, can not be installed with Gzip bzip2 and so on.4,

The daily analysis of the log of the brothers really can't afford to, often need to give pv,uv, independent IP and some statistics, use C/c++,java can write, the process is such, read the file, scan by line, put the value of the tag into the data

1. #annotation function, #! ExceptIn addition, in the parameter replacement echo ${path#*:} here does not represent a comment, a numbering conversion, does not represent a comment echo $ ((2#101011)) 2.; Command line separator, you can write

Copy Code code as follows: #!/bin/bash #!/usr/bin/expect-f #!/usr/bin/env Bash Yum Install-y expect wget Cd/root wget http://172.16.92.99/share/tar/vtune_amplifier_xe_2013_update15.tar.gz wget http://172.16.92.99/share/tar/EVAL_L_VT__VGXB-

Script A (test example 1) Copy Code code as follows: #!/bin/bash Echo ' Your are in the ' Q) Call another script file in the current script file? Method One: Using sourceScript second (test example 2) Copy Code code as

In a shell, you can pass arguments to a function when it is called. Inside the function body, the value of the parameter is obtained in the form of $n, for example, the first argument is represented, and the second argument is $ $ ... Examples of

There are 3 main types of shell loops, for,while,untilThe Shell's branch judgment is mainly 2 kinds, if,case A, for loop Copy Code code as follows: #!/bin/bash For file in $ (ls/tmp/test/mytest |grep SH) The//for in format is

I. Single-select annotations Lines that begin with "#" are comments that are ignored by the interpreter. Copy Code code as follows: #-------------------------------------------- # This is a script that automatically plays IPA,

This article describes the Gearman::xs in CentOS under the compiler installation method, for everyone to learn about! At present Gearman can support a variety of languages, its official website description is as follows: Language

Each process will have a PID, and each PID will have a corresponding directory under the/proc directory, which is the implementation of Linux (current kernel 2.6) system.General backdoor procedures, in the PS and other processes to see the tool can

This example describes the Java method for invoking shell commands. Share to everyone for your reference. Specifically as follows: Recently, the project has such a demand: the system of foreign currency funds after the completion of the dispatch of

Tag: Indicates the return value of the CTR online packet host Images network SRCDetermine which hosts are online in the current network (the ping return value is true, indicating that the host is online)The trap instruction is used to perform the