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Top Forums UNIX for Dummies Questions & Answers How to export some lines from a file to a new file? Post 302723367 by phamnu on Tuesday 30th of October 2012 03:10:37 AM
Old 10-30-2012
Originally Posted by elixir_sinari
grep 'your-pattern' input_file > new_file

Thanks so much but I still can not get it.
I write the command like that:
grep 'F(tot: 1' ft.09 F1.txt
'ft.09' is the old file, F1.txt is the new one.
Is the command right?

Sorry if the question is so stupid.

---------- Post updated at 02:10 AM ---------- Previous update was at 02:07 AM ----------

I did it!
Thanks a lot.

Before I made a mistake.
I created the file F1.txt before the grep command.
Sorry for bothering
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GREP(1) 						      General Commands Manual							   GREP(1)

grep - search a file for a pattern SYNOPSIS
grep [ option ... ] pattern [ file ... ] DESCRIPTION
Grep searches the input files (standard input default) for lines (with newlines excluded) that match the pattern, a regular expression as defined in regexp(6). Normally, each line matching the pattern is `selected', and each selected line is copied to the standard output. The options are -c Print only a count of matching lines. -h Do not print file name tags (headers) with output lines. -i Ignore alphabetic case distinctions. The implementation folds into lower case all letters in the pattern and input before interpre- tation. Matched lines are printed in their original form. -l (ell) Print the names of files with selected lines; don't print the lines. -L Print the names of files with no selected lines; the converse of -l. -n Mark each printed line with its line number counted in its file. -s Produce no output, but return status. -v Reverse: print lines that do not match the pattern. Output lines are tagged by file name when there is more than one input file. (To force this tagging, include /dev/null as a file name argument.) Care should be taken when using the shell metacharacters $*[^|()= and newline in pattern; it is safest to enclose the entire expression in single quotes '...'. SOURCE
/sys/src/cmd/grep.c SEE ALSO
ed(1), awk(1), sed(1), sam(1), regexp(6) DIAGNOSTICS
Exit status is null if any lines are selected, or non-null when no lines are selected or an error occurs. GREP(1)

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