Shell

1, the actual is not to do code backup, but to upload the attachment backup, after all, the code on my side is mainly through the SVN control, do not need to backup, but in order to lazy, or the entire folder directly packaged.Name= "Your code file

(a) Installation ideas(1) Source code compile Apache WEB Service(2) Source code compile MySQL DB service(3) Source code compiled PHP WEB service(4) Lamp Source Integration +php page creation(5) Optimization of shell scripts, introduction of

Basic operation of VIA) Enter VI after the system hint sign VI and file name, go to the VI Full screen editing screen: $ VI fileHowever, it is important to note that after you enter VI, you are in command mode and you want to switch to insert mode

01. Field Extraction Command Cut + = cut [option] file name-F Column Number: Extract the first few columns-D delimiter: Splitting columns by the specified separatorFor example: Cut-f 2,4 (column number;, comma can extract multiple rows)

1. Write Script/root/bin/sumid.sh, calculate the sum of the ID of the 10th user and the 20th user in the/etc/passwd fileSolution: vim/root/bin/sumid.sh#!/bin/bashTenuser= ' cat/etc/passwd | Head-n10 | Tail-n1 |cut-d:-f3 'Twentyuser= ' cat/etc/passwd

First, function definition and invocationA function is a series of commands that are customized in a shell script, and generally the function should have a return value (returning 0 correctly and returning a non-0 error). For error returns, you can

#!/bin/bashPython_path=/home/huaw/Crawlerpython_name=list_all_v6_crawler.pymax_sync_process=40Echo"Max allowed Ic_stat_company_submit process is $MAX _sync_process"Current_sync_num= ' Ps-ef|grep $python _name | Wc-l |grep-v grep ' current_sync_num=$[

Shell: The command interpreter executes the corresponding command according to the command entered.See which shells are under the current system:Cat/etc/shellsView the shell that is currently in use by the systemEcho $SHELLCommon shell/bin/sh "has

Special Compliance 1. * Any of the characters 2. ? Any one character 3. # comment Character 4. \ de-semantic character 5. | Pipe character 6. The $ variable prefix, which represents the row bit 7. ; Multi-line command line input, split with

sudo spctl--master-disable open application from any source when installed;sudo lsof-i:9000;sodu kill-9 pid; View port occupancy and kill process;The Rmic compiler generates stub classes and skeleton classes;/home Install software Boot of the

SED command Related:Https://www.cnblogs.com/ggjucheng/archive/2013/01/13/2856901.htmlHttps://www.cnblogs.com/DragonFire/p/6600121.htmlHere we have to do the function is:Enter a directory "/data/data8"Transform it to "\/data\/data8" in the shell

File expression-e filename true if filename exists-d filename If filename is a directory, true-F filename True if filename is a regular file-L filename True if filename is a symbolic link-r filename If filename is readable, true-W filename if

I. Basic introduction to Shell programming 1.1shell programmingThe shell is an interface that the user interacts with the kernel, and the most popular shell is now called the Bash shellThe shell is also a programming language interpreted

1.Linux Shell intercepts the first 8 bits of a character variableThere are several ways to implement this: Expr substr "$a" 1 8 echo $a |awk ' {print substr (, 1,8)} ' Echo $a |cut-c1-8 echo $ Expr $a: ' \ (. \ \). echo $

1. The relationship between Vim,vi and exVim does not need to install, VI for ex "Visual Mode", Vim is the advanced version of VI;2. Unix Shell shortcut keysctrl+a/e position the cursor to the head/tail of the commandctrl+u/k ctrl+y Paste ctrl+u/k

The steps are as follows: Vim ~/.bash_profile (no tube. Bash_profile This file has several, own new one is also possible) at the end add Export ps1= ' [\[email protected]\h \w]\$ ' Then execute the source ~/.bash_profile so the shell can display the

Ubuntu Desktop window into the Shell window: Ctrl + ALT + F2~f6; Exit Shell window: Ctrl + ALT + F7; Enter UI Command window from UI, Ctrl + Alt +t Shell Instruction Basic Format -command name [options] -For example: detailed listing of all

Shell Script Learning Summary----sed+grep+awk+ Regular================================================================================First part SED================================================================================I. INTRODUCTION of

Introduction to ArraysBash provides only one-dimensional arrays, and does not qualify the size of the array. Similar to the C language, the subscript of an array element is numbered starting with 0. Gets the elements in the array to take advantage

1. Take the IP address of the ifconfig eth0[Email protected] ~]$ ifconfig eth0Eth0 Link encap:ethernet HWaddr 00:0c:29:68:47:71inet addr:192.168.48.144 bcast:192.168.48.255 mask:255.255.255.0Inet6 ADDR:FE80::20C:29FF:FE68:4771/64 Scope:linkUp