Bash Script: How to Count Lines in a File (jobid.txt)

"Bash Script: How to Count Lines in a File (jobid.txt)"\n\nThis script demonstrates how to count the number of lines in a file using a bash loop and a counter variable. It reads each line from the "jobid.txt" file, increments the counter, and prints the final count. \n\nbash\ncounter=0\n\nwhile read -r line\ndo\n # Process the current line\n ((counter++))\ndone < jobid.txt\n\necho \"Current line number: $counter\"\n\n\nExplanation:\n\n* counter=0: Initializes a variable named counter to 0 to keep track of the line count.\n* while read -r line: Reads each line from the file jobid.txt and assigns it to the variable line. The -r option prevents backslashes from being interpreted literally.\n* ((counter++)): Increments the counter variable by 1 for every line read.\n* done < jobid.txt: Executes the loop until the end of the file jobid.txt is reached.\n* echo \"Current line number: $counter\": Prints the final value of the counter variable, which represents the total number of lines in the file.