Bash/Shell Script to Read A File Line By Line
I found a lot of different ways to read the file line by line in shell script.
Also I had a hard time to process the line read inside the loop.
Thought of documenting the solution so that others don't have to go through the frustration I did.
Here it goes...
#Code to Read a File Fine by Line In Shell Script(bash)
#AND
#Process Line in the the loop
while read line
do
current_line=$(echo $line)
modified_line="Hi "$current_line
echo $modified_line
done < file_You_Want_To_READ.txt
Explanation:
- Here
file_You_Want_To_READ.txt
is the file present in the same directory as your script. This is the file you want to process line by line. - The loop stores each line in a variable called
line
- If I want to process that variable
line
, then it has to be stored in another variable,current_line
by using$(echo $line)
- Then I create another variable
modified_line
that'll just prepend "Hi" to it. Then I just print it.
file_You_Want_To_READ.txt
looks like this:Abhi Nandan
Then the output will be :
Hi Abhi Hi Nandan
informative...
ReplyDeleteThank you!
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