Shell

Method One:Modify the/etc/sysconfig/i18n fileChange the lang= "en_US" inside to GB2312.To restart the machine.Without restarting the method, directly# lang= "GB2312"And then we can.Modify i18n just to restart the activeMethod Two:#vi

Type of Shell:1. Log-in ShellLog in normally via a terminalSu-Su-l2. Non-login shellSuCommand window open under graphical terminalShell scripts that are executed automaticallyBash's configuration file1. Global

1. Use grep (the result is enclosed in parentheses. I wonder if I can match the content in the brackets only) $ A = 'abc [EDG] adfirpqu '$ echo $ A | grep-O '\[. * \] '# escape [EDG] $ B = 'abc (EDG) adfirpqu' $ echo $ B | grep-O '(. *) '(EDG) 2.

Recently, I sent a peid shell check tool to everyone. Maybe the newbie doesn't know what this is.Let's take a look at its usage.Peid is now the most popular shell check tool. The so-called "shell" is to put a "shield" on the program, which can be

Tag: String null Integer comparison: -EQ equals to, for example, if ["$ A"-EQ "$ B"] -Ne is not equal to, for example, if ["$ A"-ne "$ B"] -GT is greater than, for example, if ["$ A"-GT "$ B"] -Ge is greater than or equal to, for example, if ["$

  While do done, until do done (indefinite loop)   While [condition]   Until [condition] Do program section done   [[email protected] scripts]# vi sh13.sh#!/bin/bash# Program:#Repeat question until user input

For Loop 1. List for Loop For variable in {list} # For each in C ++/CLR Do ... Done For example: 1. [[Email protected] TMP] # Cat B. Sh #! /Bin/bash For I in 1 2 3 4 5 #1 2 3 4 5 is equivalent to {1 .. 5} Do Echo $ I Done [[Email protected] TMP]

Disassembling script header_start=0header_len=15xref_start=$(strings -a -t d $1 | grep -e "\bxref\b" | awk ‘{print $1}‘)trailer_start=$(strings -a -t d $1 | grep -e "\btrailer\b" | awk ‘{print $1}‘)#echo $xref_start#echo

Method 1: #!/bin/bashc=0for i in `seq -w 18 31`;do while [ $c -ge 3 ];do c=$(jobs -p |wc -w) sleep 1s done bash run_cal_us_tmp.sh 201407$i & #echo "`sleep 5s`haha" & c=$(jobs -p |wc -w)done Advantages: easy to implement Disadvantage: If

Introduction:In the previous article, the incremental data in Oracle10g is imported into hive0.13.1, and the master table in hive is updated. http://blog.csdn.net/u010967382/article/details/38735381 describes the principle of incremental update hive

[Copyright statement: reprinted. Please retain the Source: blog.csdn.net/gentleliu. Mail: shallnew at 163 dot com] In most cases, the print statement of the awk can complete the task, but sometimes we need more. In those cases, awk provides two well-

The script is as follows: #! /Bin/sh # Name of the process to be checked progress_name = "heihu_server" # ------------------------------- # function: checkprogress # function: Check whether a process exists # parameter: $1 --- Name of the process to

The raw data is in the final baiang.txt file. Shell command: Cat ‑qiang.txt | grep-P "^ country | ^ ☆" | awk-F" "'{print substr ($2, 1, 2 );} '| sort | uniq-c | sort-NR The result is as follows: 27 Jiangsu22. Shandong Province18 Zhejiang10 Liaoning7

Labels: Bash internal and external commands What is an internal command? What is an external command?Internal commands: commands provided by the shell programExternal command: executable program in a path inside the system. The search for

1. clearnginxlog. Sh   #! /Bin/bash # Run at 2: 00 am every Nginx_pid = "/run/nginx. PID" Logs_path = "/opt/log/nginx" Logs_date = "$ (date-d" yesterday "+" % Y % m % d ") _ 'date + % Y % m % d % H % m % S '" MV $ {logs_path}/access. Log $

Option name Format Description -Ls -Ls View the current directory structure of the specified path -LSR -LSR Recursively view the directory structure of a specified path -Du -Du Measure the file

--- Content from http://www.jb51.net/article/31232.htm By default, values assignment and operations in shell are processed by strings,1. Example of an error methodA)Var = 1 + 1Echo $ VaRThe output result is 1 + 1. Tragedy.B)Var = 1Var = $ var +

What is the difference between $ @ and $ * in shell learning? Before talking about $ @ and $ *, you must start with the positional parameter of shell script...We all know how variables are defined and replaced.However, we also need to know that

What is the difference between shell Learning (and?Strictly speaking, Because 0 is the default value of > This method is used to export data to a file. If the file does not exist, the file is created. If the file exists, the file is cleared.

[Shell] input parameters Obtain the input parameters of the shell script and the obtained parameters. #! /Bin/bash # title: testPT. sh # atuhor: orangleliu # date: 2014-08-08 # desc: enter two parameters and the second digit. Print them if they are