05-26-2009
Thanks, it works perfect! I'm just not too sure if I understand how it operates, can you elaborate?
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----------
root:!:0:0::/root:/usr/bin/ksh
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Hi all,
I got several lines line this
a b c d e 1 e
a 1 c d e 3 f
a b c 1 e 8 h
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a 1 c d e 2 w
a b c d e 1 t
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plz help me!!
I have this file ,
3408 5600
3796 6035
4200 6285
4676 0
40 1554
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652 2451
864 2728
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need a one liner to compare 2nd and 3rd field and print values that are not matched in 2nd field
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8.8.8.8 0.0.0.0
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7.7.7.7 3.3.3.3
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4.4.4.4
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9.9.9.9
output
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---
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CMPH(1) User Commands CMPH(1)
NAME
cmph - minimum perfect hashing tool
SYNOPSIS
cmph [-v] [-h] [-V] [-k nkeys] [-f hash_function] [-g [-c value][-s seed] ] [-a algorithm] [-M memory_in_MB] [-b BRZ_parameter] [-d
tmp_dir] [-m file.mph] keysfile
DESCRIPTION
Command line tool to generate and query minimal perfect hash functions.
Please refer to http://cmph.sf.net for full documentation.
-h Print an help message
-c This value determines: the number of vertices in the graph for the algorithms BMZ and CHM; the number of bits per key required in
the FCH algorithm
-a Algorithm. Valid values are: bmz, bmz8, chm, brz, fch
-f hash function (may be used multiple times). valid values are: djb2, fnv, jenkins, sdbm
-V Print version number and exit
-v Increase verbosity (may be used multiple times)
-k Number of keys
-g Generation mode
-s Random seed
-m Minimum perfect hash function file
-M Main memory availability (in MB)
-d Temporary directory used in brz algorithm
-b Parameter of BRZ algorithm to make the maximal number of keys in a bucket lower than 256
keysfile
Line separated file with keys
EXAMPLE
$ # Using the default algorithm (chm) for constructing a mphf
$ # for keys in file keys_file. Lines in keys_file _must_ be unique.
$ ./cmph -v -g keys_file
$ # Query id of keys in the file keys_query
$ ./cmph -v -m keys_file.mph keys_query
AUTHOR
This manual page was written by Enrico Tassi <gareuselesinge@users.sourceforge.net>, for the Debian project (but may be used by others).
cmph 0.6 October 2007 CMPH(1)