Difference between revisions of "Bash loops"

From Tech-Wiki
Jump to: navigation, search
Line 2: Line 2:
  
 
Executing a Do loop to repeat one command with different hosts
 
Executing a Do loop to repeat one command with different hosts
  # for n in {1..5}; do ssh host0$n "shutdown"; done
+
  # for num in {1..5}; do ssh host-$num "shutdown"; done
 +
# for host in `cat hosts.txt`; do ssh $host "shutdown"; done
  
 
Executing the same command forever
 
Executing the same command forever
 
  # while true; do date +%s; done
 
  # while true; do date +%s; done

Revision as of 21:25, 25 April 2017


Executing a Do loop to repeat one command with different hosts

# for num in {1..5}; do ssh host-$num "shutdown"; done
# for host in `cat hosts.txt`; do ssh $host "shutdown"; done

Executing the same command forever

# while true; do date +%s; done