Question

Write a bash script which pings an IP address 5 times and redirects the output to a text file.

Use grep to search the text file and display the line "packets" to stdout.

Change the mode of the script to become an executable.

Answer 1

Save the below code into ping.sh file

   #!/bin/bash
   echo "Please Enter the IP Address"
   read ip
   ping -c 5 $ip > ./out.txt
   cat out.txt|grep packets

and then change the mode of the script using the below command.
   chmod +x ping.sh

Now use the command ' bash ping.sh' or './ping.sh' to run the script.

• echo is stdout(standard output)
• read is for stdin(standard input)
• ping is for ping, see Man Page=> man ping
• -c argument is to set the number of times ping is run, i.e, 5 here
• > is to store output in a file
• cat takes file and prints to standard output
• | is pipe. which send the output of the command on left to program on right
• grep matches the text.
• chmod is to change mode and permissions.

Thank You. Please reach out for any further clarification.