Tutorial on using GNU parallel_PHP

Use GNU parallel

Create cron tasks in batches:

1. # host.lst is the host list
   
   
   # View the current cron task
   parallel --nonall -j0 --slf host.lst "hostname;crontab -l"
   
   
   # View the /var/spool/cron file
   parallel --nonall -j0 - -slf host.lst "hostname;ls -l /var/spool/cron"
   
   
   # Set cron task
   parallel --nonall -j0 --slf host.lst echo '"0 0 * * * cd /root/nmon;/root/nmon/nmon -f -s600 -c144" > /var/spool/cron/root'
   

--tag parameter adds a tag to the output line

1. # When there are input parameters, the marked content is the input parameters,
2. # When there are no input parameters (-- nonall), the marked content is sshlogin.
3. parallel --tag --nonall -j0 --slf host.lst uptime

scp collection file

1. parallel -a host .lst scp '"{}:/root/nmon/*160401*.nmon"' .

# host.lst is the host list


# View the current cron task
parallel --nonall -j0 --slf host.lst "hostname;crontab -l"


# View /var/spool /cron file
parallel --nonall -j0 --slf host.lst "hostname;ls -l /var/spool/cron"


# Set cron task
parallel -- nonall -j0 --slf host.lst echo '"0 0 * * * cd /root/nmon;/root/nmon/nmon -f -s600 -c144" > /var/spool/cron/root'

# --tag can add tags to output lines.
# When there are input parameters, the marked content is the input parameters.
# When there are no input parameters (--nonall), the marked content is sshlogin.
parallel --tag --nonall -j0--slf host.lst uptime

http://www.bkjia.com/PHPjc/1117249.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/1117249.htmlTechArticleUse GNU parallel to create cron tasks in batches: # host.lst is the host list # View the current cron task parallel --nonall -j0 --slf host.lst "hostname;crontab -l" # View /var/spool/cron file...