05-22-2009
Thanks, I never thought about grep.
So, I tried it, but unfortunately it still deleted too much. It could be that some lines in file 1 are always the same, whatever application gets installed, like "Visible =1", which simply sets the menu to visible, and there are a few of those.
I have to try a few more things, but please keep any ideas coming.
EDIT:
Have solved the problem with a different approach. Because I have lots of file1 and they all make up file2, I delete file 2, delete the file1 of the application that is being uninstalled and rebuild file 2 with the other remaining file1's, using cat.
cat "file1's" >> file2
Problem solved!
That is the nice thing about Linux, if it does not work one way, then there is at least one other way to achieve what you want to do.
Last edited by rasputin007; 05-23-2009 at 03:55 PM..
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LEARN ABOUT DEBIAN
combine
COMBINE(1) COMBINE(1)
NAME
combine - combine sets of lines from two files using boolean operations
SYNOPSIS
combine file1 and file2
combine file1 not file2
combine file1 or file2
combine file1 xor file2
_ file1 and file2 _
_ file1 not file2 _
_ file1 or file2 _
_ file1 xor file2 _
DESCRIPTION
combine combines the lines in two files. Depending on the boolean operation specified, the contents will be combined in different ways:
and Outputs lines that are in file1 if they are also present in file2.
not Outputs lines that are in file1 but not in file2.
or Outputs lines that are in file1 or file2.
xor Outputs lines that are in either file1 or file2, but not in both files.
"-" can be specified for either file to read stdin for that file.
The input files need not be sorted, and the lines are output in the order they occur in file1 (followed by the order they occur in file2
for the two "or" operations). Bear in mind that this means that the operations are not commutative; "a and b" will not necessarily be the
same as "b and a". To obtain commutative behavior sort and uniq the result.
Note that this program can be installed as "_" to allow for the syntactic sugar shown in the latter half of the synopsis (similar to the
test/[ command). It is not currently installed as "_" by default, but you can alias it to that if you like.
SEE ALSO
join(1)
AUTHOR
Copyright 2006 by Joey Hess <joey@kitenet.net>
Licensed under the GNU GPL.
moreutils 2012-04-09 COMBINE(1)