Compare files (not using comm ) Post: 302889428

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Comparing two files (comm or awk) - help - very urgent pls

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Can you limit the compare on "comm" command

I need to find deleted records from a file. I compare yesterdays file.old to todays file.new. I need to find the records that were in yesterdays file that are not in todays. My file is fixed field. If I run a "comm -23" obviously what i find is not necesarilly a delete, it could be a change. ...

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Hiiiii friends I have 2 files which contains huge data & few lines of it are as shown below File1: b.dat(which has 21 columns) SSR 1976 8 12 13 10 44.00 39.0700 70.7800 7.0 0 0.00 0 2.78 0.00 0.00 0 0.00 2.78 0 NULL ISC 1976 8 12 22 32 37.39 36.2942 70.7338...

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Comm compare, but column specific

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Team, I have two files and I am trying to find the lines unique to file1. So i have executed the below command at shell prompt and got the correct results comm -23 <(sort test) <(sort test1) When i run the same command in Bash shell script, i got the correct results. But when i run...

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Compare multiple files, and extract items that are common to ALL files only

I have this code awk 'NR==FNR{a=$1;next} a' file1 file2 which does what I need it to do, but for only two files. I want to make it so that I can have multiple files (for example 30) and the code will return only the items that are in every single one of those files and ignore the ones...

LEARN ABOUT DEBIAN

readahead

readahead(8)						      System Manager's Manual						      readahead(8)

NAME

       readahead - file preloader for boot process optimization

SYNOPSIS

       readahead [options] <file-list> [another-file-list [...]]

DESCRIPTION

       readahead is a files preloader designed to optimize the disk I/O during the boot process.

OPTIONS

       -b, --build
	      build optimised files list only, without sorting.

       -s, --sort
	      build and sort list of files only (implies -b).

       -o, --output <file>
	      write sorted list of files to file.

       -d, --dont-sort
	      preload files described by an already sorted files list.

       -h, --help
	      print the usage information.

       -v, --verbose
	      enable the verbose mode.

       -t, --timing
	      report time spent on each operation.

       -m, --maxsize <max size>
	      maximum size in KiB a file can be in order to be preloaded, default is 10240.

       <file-list> [another-file-list [...]]
	      One or more files containing the list of files to be preloaded or sorted. The files list can be generated by readahead-collector(8).

FILES

       /etc/default/readahead-fedora

SEE ALSO

       readahead-collector(8), readahead(2),

AUTHORS

       Arjan van de Ven <arjan@infradead.org>,
	      Ziga Mahkovec <ziga.mahkovec@klika.si>, Karel Zak <kzak@redhat.com>,

       This manual page was written by Raphael Geissert <geissert@debian.org>

								     July 2011							      readahead(8)

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Comparing two files (comm or awk) - help - very urgent pls

Discussion started by: manthasirisha

2. UNIX for Dummies Questions & Answers

Can you limit the compare on "comm" command

Discussion started by: eja

3. Shell Programming and Scripting

compare two files and to remove the matching lines on both the files

Discussion started by: shellscripter

4. Shell Programming and Scripting

compare files in two directories and output changed files to third directory

Discussion started by: bkeep