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Hi, I'm calling the split command from inside C and i'm wondering why it is not working (the file is not being split). Also, when I try executing only the unix command in the shell, it's working just...

sample.txt file:
This is line 1 abc and abc
This is line 2 abc

I'm trying to seperate the occurrences per line by inserting a newline character before and after the word. Once they are newline...

I tried using grep with the "-o" option and it gives me this error:
grep: illegal option -- o
What does "-o" option do?

I also need to find an occurence of a certain string within a file....