Given the filename by the user as the input, write a shell script to display the last five lines of the file.
Shell Script
1 2 3 4 5 6 7 8 9 10 11 12 13 | #!/bin/bash # get filename echo -n "Enter File Name : " read fileName # make sure file exits for reading if [ ! -f $fileName ]; then echo "Filename $fileName does not exists" exit 1 fi # display last five lines of the file using tail command tail -5 $fileName |
Command Line Argument
You can read file name as command line argument:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 | #!/bin/bash # get filename fileName="$1" # make sure command line arg provided if [ -z $1 ]; then echo "Syntax: $(basename $0) filename" exit 1 fi # make sure file exits for reading if [ ! -f $fileName ]; then echo "Filename $fileName does not exists" exit 1 fi # ok display last five lines of the file using tail command tail -5 $fileName |