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Top Forums Shell Programming and Scripting Need to find a column from one file and print certain columns in second file Post 302579870 by durden_tyler on Wednesday 7th of December 2011 01:30:25 AM
Old 12-07-2011
Code:
$
$
$ cat file_1
aaaa
bbbb
cccc
dddd
eeee
fffff
gggg
hhhh
$
$
$ cat file_2
aaaa,abcd,effgh,ereref,name,age,sex
bbbb,efdfh,erere,afdafds,name,age,sex
cccc,q134321,34324,afadf_2343,name,age,sex
dddd,143243,234324,afde3q4r,name,age,sex
$
$
$ perl -F, -lane 'if ($ARGV eq "file_1") {$x{$_}++} elsif (defined $x{$F[0]}){print join ",", @F[0,4..6]}' file_1 file_2
aaaa,name,age,sex
bbbb,name,age,sex
cccc,name,age,sex
dddd,name,age,sex
$
$
$

tyler_durden
 

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COLRM(1)						    BSD General Commands Manual 						  COLRM(1)

NAME
colrm -- remove columns from a file SYNOPSIS
colrm [start [stop]] DESCRIPTION
The colrm utility removes selected columns from the lines of a file. A column is defined as a single character in a line. Input is read from the standard input. Output is written to the standard output. If only the start column is specified, columns numbered less than the start column will be written. If both start and stop columns are spec- ified, columns numbered less than the start column or greater than the stop column will be written. Column numbering starts with one, not zero. Tab characters increment the column count to the next multiple of eight. Backspace characters decrement the column count by one. ENVIRONMENT
The LANG, LC_ALL and LC_CTYPE environment variables affect the execution of colrm as described in environ(7). EXIT STATUS
The colrm utility exits 0 on success, and >0 if an error occurs. SEE ALSO
awk(1), column(1), cut(1), paste(1) HISTORY
The colrm command appeared in 3.0BSD. BSD
August 4, 2004 BSD
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