Read a File Line By Line in UNIX

posted Oct 15, 2014, 11:53 AM by Sachchida Ojha [ updated Nov 4, 2014, 1:06 PM ]

How do I read a file line by line under UNIX using KSH or BASH shell?

The gadget spec URL could not be found

#!/bin/ksh

file="/home/vivek/data.txt"

while read line do # display $line or do somthing with $line

echo "$line" done <"$file"

#!/bin/bash

file="/home/vivek/data.txt"

while IFS= read -r line

# display $line or do somthing with $line

echo "$line" done <"$file"

The gadget spec URL could not be found

You can also read field wise:

#!/bin/bash

file="/etc/passwd"

while IFS=: read -r f1 f2 f3 f4 f5 f6 f7 do

# display fields using f1, f2,..,f7

echo "Username: $f1, Shell: $f7, Home Dir: $f6" done <"$file"

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