Question

I am trying to find all the files which are not the *.o (object) files and store in file MyFile.lst in the current directory Tree.

I am doing it from using below command.

     #! /usr/bin/ksh
     find . -type f | grep -v "*.o" >> MyFile.lst

For some reason it is not working please help me.

Edit:

find . -type f | grep -v '\.o$' >> MyFile.lst

Seems like working. Any comment/ suggestion.(added keith.layne correction)

Answer 1

You don’t need grep.

find . -type f  '!' -name '*.o' >> MyFile.lst

In grep, the searching pattern should be a regular expression. Therefore, ., $ and * are having special meaning.

.  means match any character
$  means match the end of a line
X* means match X, zero or more times(greedy)

grep -v '\.o$' would match files with .o extension. (You need to escape . for its literal meaning).