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Run script for 10 times or until it meets the condition

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4

I have following shell script.

 OUTPUT=$(systemctl is-active etcd)
 if [[ $OUTPUT == active ]]; then
 echo "The result is successfull"
 else
 echo "The result is unsuccessfull"
 fi

I want to run this script 10 times, for each time it will sleep 10 seconds.
I was able to achieve this using for i in 1..10 loop and then using sleep command.

for i in 1..10; do
 sleep 10
 OUTPUT=$(systemctl is-active etcd)
 if [[ $OUTPUT == active ]]; then
 echo "The result is successfull"
 else
 echo "The result is unsuccessfull"
 fi
done

But I want to break the script if it matches the condition during (e.g. 1st or 2nd etc) iteration and don't want to execute next iteration.

I guess I need to implement while loop, but I am not sure how can I add condition and for loop there.

bash shell-script shell for

share|improve this question

edited May 12 at 6:54

RonJohn

60255 silver badges1717 bronze badges

asked May 11 at 15:28

smcsmc

20833 silver badges1010 bronze badges

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I'd quote "$OUTPUT" in the if statement. It will fail if the variable is empty (and probably if it contains a space).
  
  – Bloke Down The Pub
  May 11 at 19:50
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  A bit off topic, but you can skip capturing the output, and just do if systemctl -q is-active etcd; then ....
  
  – JoL
  May 11 at 20:40
  

  
  
  
  

add a comment
 | 

4

I have following shell script.

 OUTPUT=$(systemctl is-active etcd)
 if [[ $OUTPUT == active ]]; then
 echo "The result is successfull"
 else
 echo "The result is unsuccessfull"
 fi

I want to run this script 10 times, for each time it will sleep 10 seconds.
I was able to achieve this using for i in 1..10 loop and then using sleep command.

for i in 1..10; do
 sleep 10
 OUTPUT=$(systemctl is-active etcd)
 if [[ $OUTPUT == active ]]; then
 echo "The result is successfull"
 else
 echo "The result is unsuccessfull"
 fi
done

But I want to break the script if it matches the condition during (e.g. 1st or 2nd etc) iteration and don't want to execute next iteration.

I guess I need to implement while loop, but I am not sure how can I add condition and for loop there.

bash shell-script shell for

share|improve this question

edited May 12 at 6:54

RonJohn

60255 silver badges1717 bronze badges

asked May 11 at 15:28

smcsmc

20833 silver badges1010 bronze badges

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I'd quote "$OUTPUT" in the if statement. It will fail if the variable is empty (and probably if it contains a space).
  
  – Bloke Down The Pub
  May 11 at 19:50
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  A bit off topic, but you can skip capturing the output, and just do if systemctl -q is-active etcd; then ....
  
  – JoL
  May 11 at 20:40
  

  
  
  
  

add a comment
 | 

I have following shell script.

 OUTPUT=$(systemctl is-active etcd)
 if [[ $OUTPUT == active ]]; then
 echo "The result is successfull"
 else
 echo "The result is unsuccessfull"
 fi

I want to run this script 10 times, for each time it will sleep 10 seconds.
I was able to achieve this using for i in 1..10 loop and then using sleep command.

for i in 1..10; do
 sleep 10
 OUTPUT=$(systemctl is-active etcd)
 if [[ $OUTPUT == active ]]; then
 echo "The result is successfull"
 else
 echo "The result is unsuccessfull"
 fi
done

But I want to break the script if it matches the condition during (e.g. 1st or 2nd etc) iteration and don't want to execute next iteration.

I guess I need to implement while loop, but I am not sure how can I add condition and for loop there.

bash shell-script shell for

share|improve this question

edited May 12 at 6:54

RonJohn

60255 silver badges1717 bronze badges

asked May 11 at 15:28

smcsmc

20833 silver badges1010 bronze badges

 OUTPUT=$(systemctl is-active etcd)
 if [[ $OUTPUT == active ]]; then
 echo "The result is successfull"
 else
 echo "The result is unsuccessfull"
 fi

for i in 1..10; do
 sleep 10
 OUTPUT=$(systemctl is-active etcd)
 if [[ $OUTPUT == active ]]; then
 echo "The result is successfull"
 else
 echo "The result is unsuccessfull"
 fi
done

share|improve this question

edited May 12 at 6:54

RonJohn

60255 silver badges1717 bronze badges

asked May 11 at 15:28

smcsmc

20833 silver badges1010 bronze badges

share|improve this question

edited May 12 at 6:54

RonJohn

60255 silver badges1717 bronze badges

asked May 11 at 15:28

smcsmc

20833 silver badges1010 bronze badges

edited May 12 at 6:54

RonJohn

60255 silver badges1717 bronze badges

edited May 12 at 6:54

RonJohn

60255 silver badges1717 bronze badges

asked May 11 at 15:28

smcsmc

20833 silver badges1010 bronze badges

asked May 11 at 15:28

smcsmc

20833 silver badges1010 bronze badges

1 Answer
1

active

oldest

votes

7

The break builtin is used for this.

for i in 1..10; do
 sleep 10
 OUTPUT=$(systemctl is-active etcd)
 if [[ $OUTPUT == active ]]; then
 echo "The result is successful"
 break
 else
 echo "The result is unsuccessful"
 fi
done

share|improve this answer

answered May 11 at 15:31

Jesse_bJesse_b

19k33 gold badges4646 silver badges8888 bronze badges

add a comment
 | 

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7

The break builtin is used for this.

for i in 1..10; do
 sleep 10
 OUTPUT=$(systemctl is-active etcd)
 if [[ $OUTPUT == active ]]; then
 echo "The result is successful"
 break
 else
 echo "The result is unsuccessful"
 fi
done

share|improve this answer

answered May 11 at 15:31

Jesse_bJesse_b

19k33 gold badges4646 silver badges8888 bronze badges

add a comment
 | 

7

The break builtin is used for this.

for i in 1..10; do
 sleep 10
 OUTPUT=$(systemctl is-active etcd)
 if [[ $OUTPUT == active ]]; then
 echo "The result is successful"
 break
 else
 echo "The result is unsuccessful"
 fi
done

share|improve this answer

answered May 11 at 15:31

Jesse_bJesse_b

19k33 gold badges4646 silver badges8888 bronze badges

add a comment
 | 

The break builtin is used for this.

for i in 1..10; do
 sleep 10
 OUTPUT=$(systemctl is-active etcd)
 if [[ $OUTPUT == active ]]; then
 echo "The result is successful"
 break
 else
 echo "The result is unsuccessful"
 fi
done

share|improve this answer

answered May 11 at 15:31

Jesse_bJesse_b

19k33 gold badges4646 silver badges8888 bronze badges

for i in 1..10; do
 sleep 10
 OUTPUT=$(systemctl is-active etcd)
 if [[ $OUTPUT == active ]]; then
 echo "The result is successful"
 break
 else
 echo "The result is unsuccessful"
 fi
done

share|improve this answer

answered May 11 at 15:31

Jesse_bJesse_b

19k33 gold badges4646 silver badges8888 bronze badges

answered May 11 at 15:31

Jesse_bJesse_b

19k33 gold badges4646 silver badges8888 bronze badges

answered May 11 at 15:31

Jesse_bJesse_b

19k33 gold badges4646 silver badges8888 bronze badges