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Grep command error

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# 8  
Old 04-01-2013
Is your file actually named "file"?

If you are simplifying your code in anyway, don't. If this is part of a large script, if you can, extract the smallest amount of code that reproduces the error into its own script file which anyone else can use.

Also, the operating system/grep implementation which you are using may be relevant.

Regards,
Alister
# 9  
Old 04-01-2013
Quote:
Originally Posted by pratima.kumari
Code:
grep: invalid option -- -
Usage: grep [OPTION]... PATTERN [FILE]...
Try `grep --help' for more information.

Can't be! In the code snippet you gave in post #1, there was no - option to grep! Please be consistent, and, as alister wrote, give us a meaningful extraction from what is not behaving as you would expect.
# 10  
Old 04-02-2013
First try only grep command and see if it works. If yes, then pipe it to cut command.
Also run 'which grep' to make sure you are running correct version of grep.
# 11  
Old 04-02-2013
May be the file has control characters as in not in unix format. cat -A input_file should sort out that.

--ahamed
# 12  
Old 04-02-2013
The file's contents do not affect the option handling code.

Regards,
Alister
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