HowTo: Use bash For Loop In One Line

How do I use bash for loop in one line under UNIX or Linux operating systems?

The syntax is as follows to run for loop from the command prompt.

Run Command 5 Times

 
for i in {1..5}; do COMMAND-HERE; done
 

OR

 
 for((i=1;i<=10;i+=2)); do echo "Welcome $i times"; done
 

Work On Files

 
for i in *; do echo $i; done
 

OR

 
for i in /etc/*.conf; do cp $i /backup; done
 

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