Shell

Take a look at the wrong code first. Copy Code code as follows: #!/bin/bash For x in ' LS */.*/.* ' Cat $x |do Echo $x While Read line Todo C= ' echo $line |awk-f ' (' {print '} ' #echo $c i=$ ((i+ $c)) Done Echo Done Echo $i

Binary comparison operator, comparing variables or comparing numbers. Note the difference between numbers and strings. Integer Comparisons -eq equals, such as: if ["$a"-eq "$b"] -ne is not equal to, such as: if ["$a"-ne "$b"] -GT is greater than,

*-B Returns True when file exists and is a block file *-C Returns True when file exists and is a character file *-D returns True when pathname exists and is a directory *-E Returns True when pathname specified file or directory exists *-F returns

Each line that the Shell reads from standard input or script is called a pipe (pipeline); it contains one or more commands (commands) that are separated by one or more pipe characters (|). In fact, there are many special symbols that can be used to

Copy Code code as follows: #!/bin/bash Send_thread_num=13 Tmp_fifofile= "/tmp/$$.fifo" # script runs the current process ID number as filename Mkfifo "$tmp _fifofile" # Create a new random FIFO pipeline file exec 6<> "$tmp _fifofile" #

My configuration is the Linux, android4.2.2 SDK. The implementation details are in the code comments, and the variable name and echo content are part of the description. The main process is: 1. The simulator that detects whether the port is

Code AUbuntu and CentOS Copy Code code as follows: Ubuntu: #!/bin/bash echo "IPADDR:" Read Line Echo $line Sed "s/address.*$/address=${line}/g"/etc/network/interfaces CentOS (not tested): #!/bin/bash echo "IPADDR:"

Shell code: Copy Code code as follows: #!/usr/local/bin/expect Set PASSWD [lindex $argv 1] Set IP [lindex $argv 0] Set CMD [lindex $argv 2] Spawn ssh $IP $CMD Expect "(yes/no)?" { Send "YESR" Expect "Password:" Send "$PASSWDr" } "

Example:A is a local host (that is, a machine used to control other hosts);b is a remote host (that is, a controlled machine server), if IP is 192.168.60.110;Both A and B systems are Linux. To run a command on a:# ssh-keygen-t RSA (three

1. Install MSMTP luther@gliethttp:~$ sudo apt-get install msmtp 2. Edit the configuration script (~/.MSMTPRC is the default profile, or you can specify the profile path using the-C option) luther@gliethttp:~$ Vim MSMTPRC #添加如下内容 Defaults #logfile/

The Nova provides NUMA-related advanced features under the NFV scenario, which provides a script to view the NUMA-related information for compute nodes. #!/bin/bash function Get_nr_processor () {grep ' ^processor '/proc/cpuinfo | wc-l}

Multiple IP on this machine Copy Code code as follows: Ifconfig | awk '/inet/{print $} ' | Awk-f: ' {print $} ' First, use this first. Copy Code code as follows: Checkipaddress () { echo $ >/tmp/tmpserverip

Writing a: Copy Code code as follows: #!/bin/bash While Read line Todo echo $line #这里可根据实际用途变化 Done Writing two: Copy Code code as follows: #!/bin/bash Cat Urfile | While Read line Todo Echo $line

Oneself in the VPS do kingate service end, estimated the recent occupancy flow is too big, always be the service provider put my VPS reboot, but kingate this thing is once forced to end, is not boot, because to kingate.pid this file deleted to start,

This script has been tested on the Ubuntu and CentOS versions, and the script is as follows: Copy Code code as follows: #!/bin/bash Line= ' =========== ' #linux发行版名称if [[-f/usr/bin/lsb_release]]; Thenos=$ (/usr/bin/lsb_release-a

To ensure that the PHP page runs in the background, write a monitoring script, assuming that the program exits unexpectedly, you can automatically restart. Shell Script/usr/local/scripts/receve.sh content: #!/bin/bash #funtion: Keep

If you want to add a character after a variable, you can use the method: Copy Code code as follows: $value 1=home $value 2=${value1} "=" Echo $value 2 Add the string variable you want to add {}, and you need to put $ outside.The

1 Prepare the monitoring machineLinux system, normal server can, request:Install SSH client, if you want to send SMS, also need to prepare SMS cat and install Gnokii or Gammu 2 Edit ssh_config configuration file/etc/ssh/ssh_config configuration

Today, when writing a shell script to find that you need to set the user's password, and set the password is interactive, so in the script is obviously not very good, so the Internet to find data, found the following two common way to set the

Many of the shell scripts executed with Cron may take a long time to execute for a variety of reasons, and it is necessary to check whether they are still running while running. This article provides a Linux shell script to check with the command sh