linux shell

This article is part of the Linux Shell Series Tutorial series, which includes the following 18 parts: Linux Shell Series Tutorial (a) Shell introduction Linux Shell Series Tutori

Linux ------- create Shell program and special characters, linux ------- shellI. How to execute Shell scripts Shell scripts are text files, so you can use any text file editor (such as vi and emacs) to create and edit scripts. The name of the

Linux shell BASICS (6) and Linux shell Basics6. Detailed description of Shell script programming links the content of the above five parts to increase understanding of Shell 01. shell s

Get weather from Linux-shell and from linux-shell Using the shell in Linux to get the weather is difficult. It turns out that it is really simple and the single-digit code will be done.Obtain the weather of the target City All wea

SELF: http://www.justwinit.cn/post/3702/ Shell time:A = 'date + % Y % m % d' Echo $; # Sh data. Sh 20101028 #! /Bin/sh # Log Mydate = 'date + % d % m % y' # Append mydate to the variable logfile that holds the actual filename of the log Logfile =/root/test_log. $ mydate # Create the file > $ Logfile Mytime = 'date + % d % R' Logfile2 =/root/test_logtime. $ mytime # Create the file > $ Logfile2 Two files are generated:Ls/root/test_log.281010 /Root/test

From a programmer's point of view, the shell itself is a program written in C language, from the user's point of view, the shell is the user and the Linux operating system communication Bridge. Users can either enter command execution and use shell scripting to accomplish more complex operations. In the

:07Variables in shell scripts You should use a variable instead when you use a string more frequently in your script and the string length is long When using conditional statements, variables are often used?? If [$a-gt 1]; Then ...; Fi When referencing the result of a command, replace it with a variable?? n=wc -l 1.txt When writing scripts for user interaction, variables are also necessary?? Read-p "Input a number:" N; echo $n?? I

Use linux shell to automatically pin and linux shell to pin If I post a post on the Forum to ask something, once the post fails, it will sink in seconds, but I really don't want to go to the top all the time. What should I do? The following shows how to use shell crontab t

Linux shell BASICS (5) and Linux shell BasicsV. bash operations and startup script 01. history of bash commands # history ...... # Set (show all variables) | grep HISHISTFILE =/root /. bash_historyHISTFILESIZE = 1000 (number of historical files) HISTSIZE = 1000 (historical file size) # vi/root /. bash_history ...... (1

Linux-shell test, linux-shell Nature of testing: Is an operation command According to $? Return Value to determine whether the condition is true Operation Specifications: Format 1: test Condition expression Format 2: [conditional expressions] Contact Method for test operation: Direct root echo YES judgment result Us