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Full Discussion: read in variable data from another file - grep
Top Forums Shell Programming and Scripting read in variable data from another file - grep Post 302269321 by nj78 on Wednesday 17th of December 2008 11:21:07 AM
Old 12-17-2008
Quote:
Originally Posted by ccox85
I dont understand how this would work. It looks to me like list would be the file name of my list file, and name would just read in each record in the file (??? I dont know if that is the right interpretation). Then, the grep command looks for lines in the data file that start with the subject numbers in the list file. However, If I print to >> $name.out, then I am going to have a new file for every subject... which would not be good. I want to group by experimental condition.

If I am interpreting this correctly, I would be able to to this and just define the output files name to explicly be the ec number, if I read from my individual lists that are already grouped by condition.

Is there a way to read in column $1 from the list file (which is the ec) and have that govern the name of the .out, and then read the second column of the list file (the subject number) into the grep search pattern pattern?

So the grep line would be something like this, i think:
Code:
grep '^$2' all.inq >> $1.out

I just dont know how to read in the master list file so that it would work.
I don't want to be too specific in case you are just doing homework, but you had spaces in your example, and it sounded like you wanted files such as 1.out, 2.out.
 

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LEARN ABOUT NETBSD

zgrep

ZGREP(1)						    BSD General Commands Manual 						  ZGREP(1)

NAME

     zgrep, zegrep, zfgrep -- print lines matching a pattern in gzip-compressed files

SYNOPSIS

     zgrep [grep-flags] [--] pattern [files ...]

     zegrep [grep-flags] [--] pattern [file ...]

     zfgrep [grep-flags] [--] pattern [file ...]

DESCRIPTION

     zgrep runs grep(1) on files or stdin, if no files argument is given, after decompressing them with zcat(1).

     The grep-flags and pattern arguments are passed on to grep(1).  If an -e flag is found in the grep-flags, zgrep will not look for a pattern
     argument.

     zegrep calls egrep(1), while zfgrep calls fgrep(1).

EXIT STATUS

     In case of missing arguments or missing pattern, 1 will be returned, otherwise 0.

SEE ALSO

     egrep(1), fgrep(1), grep(1), gzip(1), zcat(1)

AUTHORS

     Thomas Klausner <wiz@NetBSD.org>

BSD
								 December 28, 2003							       BSD
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