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Top Forums Shell Programming and Scripting Find and sort by first column value Post 302932526 by f_o_555 on Thursday 22nd of January 2015 06:06:32 AM
Old 01-22-2015
Find and sort by first column value

Hi,
I have two text files
file 1 with N lines

Code:
AAAAA	2.092290E-12
BBBBB	1.727740E-07
CCCCC	9.608710E-17
DDDDD	0.000000E+00
EEEEE	0.000000E+00
FFFFF	0.000000E+00
GGGGG	0.000000E+00
HHHHH	0.000000E+00
IIIII	3.300320E-04
...

The text in the first column is unique for each row and alphabetically sorted A->Z.

file 2 with M lines (M>=N)

Code:
AAAAA	text1	5.07822E-02
DDDDD	text2	8.45965E-03
CCCCC	text3	4.33704E-03
BBBBB	text4	0.00000E+00
EEEEE	text3	5.05173E+00
GGGGG	text4	2.83088E-03
...

The text in the first column is unique for each row.

What I would like to obtain is file 3 containing only the rows of file 2 with an "column1 entry" in file 1 and sorted as they appear in file 1.
If the entry is not present I would like to have a warning message (as below).

file 3 with N lines

Code:
AAAAA	text1	5.07822E-02
BBBBB	text4	0.00000E+00
CCCCC	text3	4.33704E-03
DDDDD	text2	8.45965E-03
EEEEE	text3	5.05173E+00
FFFFF	NOT	FOUND
...

Do you have any suggestion?

Many thanks,
 

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PR(1)							      General Commands Manual							     PR(1)

NAME
pr - print file SYNOPSIS
pr [ option ... ] [ file ... ] DESCRIPTION
Pr produces a printed listing of one or more files on its standard output. The output is separated into pages headed by a date, the name of the file or a specified header, and the page number. With no file arguments, pr prints its standard input. Options apply to all following files but may be reset between files: -n Produce n-column output. +n Begin printing with page n. -b Balance columns on last page, in case of multi-column output. -d Double space. -en Set the tab stops for input text every n spaces. -h Take the next argument as a page header (file by default). -in Replace sequences of blanks in the output by tabs, using tab stops set every n spaces. -f Use formfeeds to separate pages. -ln Take the length of the page to be n lines instead of the default 66. -m Print all files simultaneously, each in one column. -n Number the lines of each file. -on Offset the left margin n character positions. -sc Separate columns by the single character c instead of aligning them with white space. A missing c is taken to be a tab. -t Do not print the 5-line header or the 5-line trailer normally supplied for each page. -wn For multi-column output, take the width of the page to be n characters instead of the default 72. SOURCE
/sys/src/cmd/pr.c SEE ALSO
cat(1), lp(1) PR(1)
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