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Full Discussion: why read line skips some lines...
Top Forums Shell Programming and Scripting why read line skips some lines... Post 302138786 by bluemoon1 on Wednesday 3rd of October 2007 11:57:47 AM
Old 10-03-2007
why read line skips some lines...
Dear Guru:

This has got to be a difficult question, as I've worked on it for a good amount of time now & still puzzled...

So here is the simplified logic in my code:

while read LINE
do
#install a pkg with the name extracted from this line
install_pkg name
done < fileWithPkgNamesToBeInstalled

Say, I have 30 of such lines in the file, everything is fine except once it's finished a particular pkg install (which completed successfully with no error), it will skip the next 3 lines in the file, in other words, that 3 pkgs will not get installed.

If I commented out the install function then I can see all the lines including the ones previously being skipped (e.g. "echo $LINE" will not print the 3 lines in the above code):

while read LINE
do
#install a pkg with the name extracted from this line
# install_pkg name
echo $LINE
done < file

I moved that particular line in the file associated with the pkg to any where else, then still with 3 lines skipped, but they moved to a different place just to follow immediately that line.

Can anyone explain why??
Your response would be highly appreciated.
 

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