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Full Discussion: Common values in 2 columns in 2 files
Top Forums Shell Programming and Scripting Common values in 2 columns in 2 files Post 302820999 by Mohamed EL Hadi on Thursday 13th of June 2013 09:42:00 PM
Old 06-13-2013
Common values in 2 columns in 2 files
Hello,

Suppose I have these 2 tab delimited files, where the second column in first file contains matching values from first column of the second file, I would like to get an output like this:

File A

Code:
1    A
2    B
3    C

File B

Code:
A    Apple
C    Cinnabon
B    Banana

I would like an output like this:

Code:
1   Apple
2   Banana
3   Cinnabon

I can write a script for this, but I would like to know how to make it in awk or perl in one line..

Thanks,
Mohamed
 

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LEARN ABOUT REDHAT

column

COLUMN(1)						    BSD General Commands Manual 						 COLUMN(1)

NAME

     column -- columnate lists

SYNOPSIS

     column [-tx] [-c columns] [-s sep] [file ...]

DESCRIPTION

     The column utility formats its input into multiple columns.  Rows are filled before columns.  Input is taken from file operands, or, by
     default, from the standard input.	Empty lines are ignored.

     The options are as follows:

     -c      Output is formatted for a display columns wide.

     -s      Specify a set of characters to be used to delimit columns for the -t option.

     -t      Determine the number of columns the input contains and create a table.  Columns are delimited with whitespace, by default, or with
	     the characters supplied using the -s option.  Useful for pretty-printing displays.

     -x      Fill columns before filling rows.

     Column exits 0 on success, >0 if an error occurred.

ENVIRONMENT

     COLUMNS  The environment variable COLUMNS is used to determine the size of the screen if no other information is available.

EXAMPLES

	   (printf "PERM LINKS OWNER GROUP SIZE MONTH DAY HH:MM/YEAR NAME
" 
	   ; ls -l | sed 1d) | column -t

SEE ALSO

     colrm(1), ls(1), paste(1), sort(1)

HISTORY

     The column command appeared in 4.3BSD-Reno.

BSD
								   June 6, 1993 							       BSD
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