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Full Discussion: Grep Commands
Top Forums Shell Programming and Scripting Grep Commands Post 302848061 by smkremer on Wednesday 28th of August 2013 11:23:29 AM
Old 08-28-2013
Grep Commands
I have a text file that has multiple lines in it with multiple dates and years. I was trying to figure out the best way to remove the line that had 2010 and 2011 to an archive file. We only need to keep the 2012 and 2013 lines in the original file. The following is a sample line in the txt file:

Code:
20126789|Active|08/28/2013 08:42:28 AM

If I do the following command it will take all of the 2010's and place it in the archive file and leave the original file alone:

Code:
egrep '[0-9][0-9]/[0-9][0-9]/2010' "textfile.txt" >> "textfile_2010.txt"

What is the correct format to also grab 2011? I tried [2010][2011] and that did not work.

I also tried the following to grab everything but 2010 to put in a new file:

Code:
egrep -v '[0-9][0-9]/[0-9][0-9]/2010' "textfile.txt" >> "textfile_archive.txt"

However, I would prefer to only have one or two commands to do what I need. Therefore, what's the simplest way to do the following:

1) Delete the lines that have a date of ##/##/2010 and ##/##/2011 in textfile.txt and place them in textfile_archive.txt

Results would be:

textfile.txt
Code:
20126789|Active|01/01/2012 08:42:28 AM
20126789|Active|12/31/2013 08:40:28 AM

textfile_archive.txt
Code:
20136789|Active|01/01/2010 11:42:28 AM
20126789|Active|12/31/2011 05:40:28 PM

Any help is appreciated!

Thanks!
Last edited by Scott; 08-28-2013 at 12:25 PM.. Reason: Please use code tags for code and data
 

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LEARN ABOUT HPUX

unshar

UNSHAR(1)						      General Commands Manual							 UNSHAR(1)

NAME

       unshar - unpack a shar file

SYNOPSIS

       unshar [ options ] [ file ... ]

DESCRIPTION

       Unshar  scans mail messages looking for the start of a shell archive.  It then passes the archive through a copy of the shell to unpack it.
       It will accept multiple files.  If no files are given, standard input is used.

OPTIONS

       Options have a one letter version starting with - or a long version starting with --.  The exception is --help and  --version,  which  does
       not have a short version.

       --version
	      Print the version number of the program on standard output, then immediately exits.

       --help Print a help summary on standard output, then immediately exits.

       -d DIRECTORY  --directory=DIRECTORY
	      Change directory to DIRECTORY before unpacking any files.

       -c  --overwrite
	      Passed  as  an option to the shar file.  Many shell archive scripts (including those produced by `shar' 3.40 and newer) accepts a -c
	      argument to indicate that existing files should be overwritten.

       -e  --exit-0
	      This option exists mainly for people who collect many shell archives into a single mail folder.  With this option, `unshar' isolates
	      each different shell archive from the others which have been put in the same file, unpacking each in turn, from the beginning of the
	      file towards its end.  Its proper operation relies on the fact that many shar files are terminated by a `exit 0' at the beginning of
	      a line.

	      Option -e is internally equivalent to -E "exit 0".

       -E STRING  --split-at=STRING
	      This option works like -e, but it allows you to specify the string that separates archives if `exit 0' isn't appropriate.

	      For  example,  noticing  that  most `.signatures' have a `--' on a line right before them, one can sometimes use `--split-at=--' for
	      splitting shell archives which lack the `exit 0' line at end.  The signature will then be skipped altogether with the headers of the
	      following message.

       -f  --force
	      The same as -c.

SEE ALSO

       shar(1)

DIAGNOSTICS

       Any message from the shell may be displayed.

AUTHORS

       The  shar  and  unshar  programs is the collective work of many authors.  Many people contributed by reporting problems, suggesting various
       improvements or submitting actual code.	A list of these people is in the THANKS file in the sharutils distribution.

REPORTING BUGS

       Report bugs to <bug-gnu-utils@gnu.org>.	Please put sharutils in the subject line.  It helps to spot the message.

								September 10, 1995							 UNSHAR(1)
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