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Who invented grep?
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Explain the terms ‘system calls’ and ‘library functions’ with respect to unix commands?
What is the function of grep command in unix?
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Hi All, Can you please let me know how to grep for a particular pattern in unix. I want to print the dates from the file exp.txt. the date pattern is DD:MM:YYYY, I just want to print all the dates from the file exp.txt.
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Unix Commands 
