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Top Forums Shell Programming and Scripting [Solved] Sorting a column based on another column Post 302744505 by Corona688 on Friday 14th of December 2012 11:28:30 AM
Old 12-14-2012
Code:
$ awk 'NR==FNR { ARR[$4]=$0 ; next }; $1 in ARR { A=$1 ; B=$2; C=$3; D=$4 ; $0=ARR[$1]; $1=A; $2=B; $3=C } 1' datafile datafile

F0100010 A C F0100010 A C BTA-29644-no-rs 7.29827
F0100020 A G F0100020 A G BTA-29515-no-rs 127.006
F0100030 A T F0100030 A T BTA-29334-no-rs 11.4989
F0100040 A G F0100040 A G BTA-28763-no-rs 77.2692
F0100050 A T F0100050 A T BTA-32647-no-rs 70.9005

$

Yes, I put the input file into it twice, not a typo. The first time reads all lines into memory and indexes on the fourth column. The second time, it prints out lines, recalling and recombining lines.

Last edited by Corona688; 12-14-2012 at 12:42 PM.. Reason: fix mistake
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load_datafile(3alleg4)						  Allegro manual					    load_datafile(3alleg4)

NAME
load_datafile - Loads a datafile into memory. Allegro game programming library. SYNOPSIS
#include <allegro.h> DATAFILE *load_datafile(const char *filename); DESCRIPTION
Loads a datafile into memory in one go. If the datafile has been encrypted, you must first call packfile_password() to set the appropriate key. If the datafile contains truecolor graphics, you must set the video mode or call set_color_conversion() before loading it. Example: /* Load the resources for our game. */ DATAFILE *dat = load_datafile("game.dat"); if (!dat) abort_on_error("Couldn't load sound resources!"); /* Use resources. */ ... /* Destroy them when we don't need them any more. */ unload_datafile(dat); RETURN VALUE
Returns a pointer to the DATAFILE, or NULL on error. Remember to free this DATAFILE later to avoid memory leaks. SEE ALSO
load_datafile_callback(3alleg4), unload_datafile(3alleg4), load_datafile_object(3alleg4), set_color_conversion(3alleg4), fixup_datafile(3alleg4), packfile_password(3alleg4), find_datafile_object(3alleg4), register_datafile_object(3alleg4), excustom(3alleg4), exdata(3alleg4), exexedat(3alleg4), exgui(3alleg4), exsprite(3alleg4), exunicod(3alleg4) Allegro version 4.4.2 load_datafile(3alleg4)
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