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Full Discussion: Shell script to Split matrix file with delimiter into multiple files
Top Forums UNIX for Beginners Questions & Answers Shell script to Split matrix file with delimiter into multiple files Post 303042222 by RudiC on Thursday 19th of December 2019 06:23:02 AM
Old 12-19-2019
This should work for exactly the data sample you presented; for "thousands of columns", additional efforts need to be spent, like closing output files after appending to them:


Code:
awk -F\; '
NR == 1 {for (i=5; i<=NF; i++)  {split ($i, T, "_")
                                 COL[T[1]] = COL[T[1]] OFS  i 
                                }
        }

        {for (c in COL) {n = split (COL[c], T)
                         OUT = $(T[2])
                         for (i=3; i<=n; i++) OUT = sprintf ("%s;%s", OUT, $(T[i]))
                         print $1, $2, $3, $4, OUT  >  (c ".txt")
                        }
        }
' OFS=\; file
---------- A.txt: ----------

ID1;ID2;ID3;ID4;A_1;A_2;A_3
AA;ax;ay;az;01;04;07
BB;bx;by;bz;03;44;27

---------- B.txt: ----------

ID1;ID2;ID3;ID4;B_1;B_2;B_3
AA;ax;ay;az;02;05;08
BB;bx;by;bz;05;15;08

---------- C.txt: ----------

ID1;ID2;ID3;ID4;C_1;C_2;C_3
AA;ax;ay;az;03;06;09
BB;bx;by;bz;33;26;09

 

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LEARN ABOUT NETBSD

dh_compress

DH_COMPRESS(1)							     Debhelper							    DH_COMPRESS(1)

NAME

       dh_compress - compress files and fix symlinks in package build directories

SYNOPSIS

       dh_compress [debhelperoptions] [-Xitem] [-A] [file...]

DESCRIPTION

       dh_compress is a debhelper program that is responsible for compressing the files in package build directories, and makes sure that any
       symlinks that pointed to the files before they were compressed are updated to point to the new files.

       By default, dh_compress compresses files that Debian policy mandates should be compressed, namely all files in usr/share/info,
       usr/share/man, files in usr/share/doc that are larger than 4k in size, (except the copyright file, .html and other web files, image files,
       and files that appear to be already compressed based on their extensions), and all changelog files. Plus PCF fonts underneath
       usr/share/fonts/X11/

FILES

       debian/package.compress
	   These files are deprecated.

	   If this file exists, the default files are not compressed. Instead, the file is ran as a shell script, and all filenames that the shell
	   script outputs will be compressed. The shell script will be run from inside the package build directory. Note though that using -X is a
	   much better idea in general; you should only use a debian/package.compress file if you really need to.

OPTIONS

       -Xitem, --exclude=item
	   Exclude files that contain item anywhere in their filename from being compressed. For example, -X.tiff will exclude TIFF files from
	   compression.  You may use this option multiple times to build up a list of things to exclude.

       -A, --all
	   Compress all files specified by command line parameters in ALL packages acted on.

       file ...
	   Add these files to the list of files to compress.

CONFORMS TO

       Debian policy, version 3.0

SEE ALSO

       debhelper(7)

       This program is a part of debhelper.

AUTHOR

       Joey Hess <joeyh@debian.org>

11.1.6ubuntu2							    2018-05-10							    DH_COMPRESS(1)
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