Shell

Meaningless script, big God do not spray/[[email protected] desktop]# vim oraclesh.sh #!/bin/bashclear# function Test_parameter1 () {' echo  ' su - oracle -c  ' Sqlplus /nolog '  name          type  value------------------------------------ ---------

what is a regular expression? Regular expressions are a grammatical rule that describes the pattern of character arrangement and matching. It is used primarily for pattern segmentation, matching, finding, and substitution of strings.two, regular

The shell is the interface between the user and the Linux operating system.CCat Zdd Browse the contents of a ZDD fileCat Zdd1 Zdd2 Browsing the contents of multiple filesCat-n ZDD Browse the contents of a file Zdd and display line numbersCD back to

1. Nginx configuration file1.1, the project directory is placed in the system/var/www/Upstream App {# Path to Unicorn SOCK file, as defined Previouslyserver unix:/var/www/app/shared/sockets/unicorn.sock Fail_ timeout=0; #server 127.0.0.1:4000

Digital time Transfer Standard Time:Digital time such as: 20151009163000Standard Time: 2015-10-19-16:30:00A= ' head-1/home/xxx/xxx/bin/.status |awk-f= ' {print $ {} ' |sed-r ' s/([0-9]{4}) ([0-9]{2}) ([0-9]{2}) ([0-9]{2}) ([}) ([0-9]{2}] ) ([0-9]{2})

Judging variablesRead-p "Input a word:" WordIf [!-n "$word"] ; thenecho "You had not input a word!"Elseecho "The word you are input is $word"FiJudging input parameters#!/bin/bashif [!-n "$"]; thenecho "You had not input a word!"Elseecho "The word

If you want to start a shell script in a terminal session, and then have the script run in background mode until it finishes, you can use the Nohup command, even if you quit the terminal session. The feeling of Nohup is to initialize a process to a

1.if-then#!/bin/bashIf date if the command runs successfully (exit code 0), then the command in the then section is executedThenecho "Good"Fi2.if-then-else#!/bin/bashIf HunterThenecho "Good"Elseecho "bad" if statement in exit code not 0, execute

> If the file does not exist, as above, if the file exists, clear the file first, then fill in the file with the data>> If the file does not exist, a new file is created and the data is sent to the file, and if the file exists, the data is added

ReasonOften we need to find some kind of file and deal with it. For example, locate the. svn folder, and then delete it. If you do not use the shell, you can choose to manually delete, provided that there are few such files, but the SVN information

Recently in the thinking of a problem, the online server run a variety of services, it may be running Nginx, another run is MySQL, the other is to run NFS or other services, etc. Through a certain script fixed write some services to implement

/************************************************************************** * OK335XS U-boot compilation problem & no Li Nux Shell Problem * Statement: * Mainly because the system was made by my master, he removed some information, and because he is

Directly on the code:#include "apue.h" #include int main (void) { char buf[maxline];/* form apue.h 4096 */ pid_t pid; int status; printf ("percent"); /* Print PROMT (printf requires percent to print%) * /while (Fgets (buf,

Move:Ctrl + A: Moves to the beginning of the currently edited command,Ctrl + B: Moves to the end of the currently edited command line,Ctrl + F or->: move by word aligns (toward the end of the command line, forward)Ctrl + B or Alt + F: Move right by

/proc File Systemthe /proc file system in Linux consists of a set of directories and files , mounted ( Mount) with the /proc directory .The/proc file system is a virtual file system that provides an interface to the kernel data structure in the

File Status Test-B FileName: Returns True when filename exists and is a block file (returns 0)-C FileName: Returns True when filename exists and is a character file-D Pathname: Returns True when pathname exists and is a directory-E Pathname: Returns

Before the directory installed on the OpenFire encountered this problem, and today again, you need to modify a folder under all subfolders and files of the three permissions: Read and write to the user, the administrator read and write, all read and

1. String judgmentSTR1 = str2 When two strings have the same content, length is trueStr1! = str2 True when string str1 and str2 are not equal-N str1 True when the length of the string is greater than 0 (string non-null)-Z str1 True when the string

Definition of 0x00 ArrayThe definition group of arrays has its place as a special data structure in any programming language, and of course the Bash shell is no exception. This article makes a small summary of the shell array. Here we only discuss

Fly2015Pecompact Shell is not heard of the shell, the need to shelling the program is my love crack training of the first lesson of elective assignment four. Recently a bit addicted to shelling, of course, also suffered from shelling frustrated