Please support our Shell Scripting advertiser: Programming Forums
Views: 1842 | Replies: 4
•
•
Join Date: Apr 2006
Posts: 2
Reputation: 
Rep Power: 0
Solved Threads: 0
Newbie Poster
Hi all, i am new to shell scripting and know very few basics, i have a shell script program written by some other guy and i am trying to understand it. I am unable to understand a few parts of the program, hope some one cud help me with this ....
In the while loop what does $? mean and will it not go to an infinite loop, in the echo statement, what does get do, i guess "read var" reads a value from keyboard right, and finally what does done < testfile2.txt mean .....
Hope some one helps and thanks for your help ...
while [ "$?" = "0" ]
do
if [ "$var" ]
then
echo "get /somepath/$value/$var /somepath/$var" >> testfile1.txt
fi
read var
done < testfile2.txt In the while loop what does $? mean and will it not go to an infinite loop, in the echo statement, what does get do, i guess "read var" reads a value from keyboard right, and finally what does done < testfile2.txt mean .....
Hope some one helps and thanks for your help ...
•
•
•
•
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Threaded Mode