Review the common Linux instructions in the project and make a little progress every day

Architects who can drive 2020-11-06 21:40:18
review common linux instructions project

1.grep -v grep            Remove grep Process number occupied by itself , It is often used in scripts , The purpose is to return the unique process number you want

Case script :

#Desc stop it jenkins

# 1. Initialize port number , The default is 6380
if [ "x" != "x$1" ] ;

# 2. obtain jenkins function id
result=`ps -ef | grep jenkins | grep $port | grep -v grep | grep -v /bin/bash `

if [ "x" = "x$result" ] ;
   echo "No jenkins running on port $port !"
   echo "Find the running jenkins on port $port:"
   echo $result

# 3. obtain jenkins pid
pid=`echo $result | awk -F " " '{print $2}'`

# 4. Kill jenkins
if [ "x" != "x$pid" ] ;
   kill -9 $pid 
   echo "Killed the process: $pid"

2.sudo            Ordinary users are given permission to operate root Instructions

Detailed explanation :

3.expect  Instructions         It is used to realize the automatic interaction function of remote server

Detailed explanation :

Case script :

#Desc structure jenkin Mission

# Perform the test

# Trigger test task
$java -jar $jenkins_cli -s $jenkins_url -auth $user:$pwd build $1
[[email protected] bin]# cat
#Desc long-range apache An admin command

# Calibration parameters
if [ $# -lt 3 ]; then
   echo "[error] Incorrect command format !"
   exit 3

# To obtain parameters

# Execute remote command
expect -c "spawn ssh -t [email protected]$ip sudo /opt/app/apache24/bin/apachectl -k $signal
expect {
*yes/no* { send yes\r; exp_continue }
*password:* { send $passwd\r } 


4. Deploy microservice application script case

# Declare variables :


# Stop the original service (printf$2: Means to print the second field . awk '{printf$2}' : Line by line reading prints the second field of each line .xargs kill -9: Kill the received process number )

ps -ef | grep $ms_name | grep -v grep | awk '{printf$2}' | xargs kill -9

# Clean up the log (> Output redirection )
echo "" > $log_file

# Backup
dt=`date  +"%Y%m%d"`
mv $run_dir/$ms_name.jar $bk_dir/$ms_name.jar.$dt

# Deploy new packages
mv $tmp_dir/$ms_name.jar $run_dir

# Start the service (>" and “2>" The combination of these two is ”&>" The result is that you type the command , Correct and error messages are not output on the screen directly into a file you redirect .)
nohup $java -jar $run_dir/$ms_name.jar &> $log_file &

5.linux Find the application installation directory

If you order which and whereis Can't find the installation directory , The following methods can be used :

    Example : ps -ef|grep redis

              Got the process number xxxx

                then ls -l /proc/xxxx/cwd

By the way, you can also find the configuration file path :

Example :locate nginx.conf

本文为[Architects who can drive]所创,转载请带上原文链接,感谢

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