Shell

Little stuff, for database backup.Retained.#!/bin/SHkeepdays= -currenttime=`Date "+%y-%m-%d-%h-%m"' Backpath="/sql_bak/"DbName="Smdb"Echo${currenttime}/usr/bin/mysqldump--default-character-set utf8-u xxx--password=xxx--database ${dbname} >${backpath}

1. Ready to work, window can directly import files through Sqlload, Linux, need to have sqlload related software.2. SQL Script (MID_DFDZ.CTL) LOAD DATAInto TABLE Mid_t0_transTruncateFields TERMINATED by ' |

==================================================#!/bin/bashsqlplus=sqlplus64username=$1psswd=$2filedir=$3[[$ Filedir] | | Filedir= "/sandbox/edf_api_repo_dir" [[-D $filedir]] | | {echo "mkdir $filedir"; mkdir $filedir; chmod 777 $filedir;} [-D

In order to do cluster testing, 3 tomcat is installed on each machine, each time the project is released, it is necessary to repeatedly knock some commands, check that the Tomcat process has not stopped before restarting Tomcat, and kill the process

-eq: Equals-ne: Not equal to-GT: Greater Than-LT: Less than-le: Less than or equal to-ge: greater than or equal toCat File.txt | awk ' $ >= ' 09:03:00 "'How awk takes the reverseCat File.txt | awk ' $ >= ' 09:03 ' | awk ' {$2= ' ";p rint} 'Not the

1, Reason analysis:No. Bash_profile This file can be displayed by configuring this file recovery path.2. Configuration steps:(1), Vim ~/.bash_profile Add the following command here:Export ps1= ' [\[email protected]\h \w]\$ '(2), after saving to

#表示该脚本以bash方式运行1. #!/bin/bash# accepts the input and assigns the value to the variable 2. Read variable name #使用变量3. ${variable name} #此变量只读4. readonly variable name #删除此变量, cannot delete read-only variable 5. The unset

#!/bin/bash#by lcpanduan () {if [ $? -ne 0 ]then  echo  "=========== ====$1 not ok ==================== "  exit 1fi}function checkroot () {   if [  ' Id -u '  -ne 0 ]  then     echo   ' pleases do this  ' su -"'  &&     exit 1   fi}function tarruby (

Basic knowledge of Shell programmingThree ways to empty a log1.echo Cary >test.log>test.log2.echo Cary >test.logEcho >test.log3.echo Cary >test.logCat/dev/null >test.logShell scripts are good at working with plain text type data, while almost all

First, the name of the variableThe variable name must begin with a letter or underscore, consisting of a letter, number, or underscore, and the variable name cannot exceed 255 characters in length.Ii. Classification of variables1. User-defined

In Linux there are many ways to read a file row by line, the most common is the method in the following script, and is the most efficient, most used method. In order to give you an intuitive feeling, we will test the execution efficiency of various

Sometimes we need to overwrite a folder to our working directory, but need to automatically back up the existing files, one to go back to the backup is too troublesome, all the backup is not necessary. Shell scripts can do a good job of doing this.

Environment settings for the terminal of the Bash shell usage environment: stty Environment settings for the terminal of the Bash shell usage environment: stty STTY-A Lists all the current stty parameters to INTR: Sending an interrupt

Recently learning Gradle, using the git clone command to download some information, but the file name contains a space, it does not seem very comfortable, so think of using shell script to batch it, remove the file name of the space, note that this

Login shell (requires a password) To log in normally through a terminal, you need to enter a user name and password.Using Su-usernameUsing su-l username Non-login shell (no password required) SU usernameOpen terminal window under

Command: WCOption:-L view number of rows-W View the number of words with a white-space character delimiter-M view number of characters, file sizeDescription: Counts the number of bytes, words, and lines in the specified file.-L[Email protected] 111]#

1. Create shell script file     Create file, add executable permission to file chmod +x file    format: Specify the shell        #! in the first line of the file /bin/bash    NOTES: #开头的命令 (except  #!/bin/bash  in the first line)     Display message:

#!/bin/bashRecently looking at the shell, a variety of puzzles, but to solve the feeling of confusion is still very good. Needless to say, Linux uses file descriptors to identify each file object. The file descriptor is a non-negative integer that

Condition test Type in Bash script: integer testString testFile testExpressions for conditional tests: [Expression][[expression]] expression must have a space before and after itinteger test :-eq: Tests whether two integers are equal and equal to

The test command in the shell is used to check if a condition is true, and it can be tested in three aspects of numeric, character, and file. Numerical test Parameters Description -eq Equals is True