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Full Discussion: Awk: get upper and lower bound per group
Top Forums Shell Programming and Scripting Awk: get upper and lower bound per group Post 303007327 by genome on Wednesday 15th of November 2017 09:13:43 AM
Old 11-15-2017
Quote:
Originally Posted by Corona688
First off, you don't need cat's help to read a file, awk can read perfectly fine on its own. Same goes for nearly any other program.

Code:
$ awk '($3 > MAX[$5]) { MAX[$5]=$3 }
        (!($5 in MIN) || ($2 < MIN[$5] )) { MIN[$5]=$2 }
        END { for(X in MIN) print X, MIN[X], MAX[X] }' inputfile

ARSA 51063758 51066194
ACR 51176664 51178286
CHKB 51018157 51021197
SHANK3 51143462 51169684

$

Thank you corona.
Do you think you can help me understand how this is working?

---------- Post updated at 09:12 AM ---------- Previous update was at 09:11 AM ----------

---------- Post updated at 09:13 AM ---------- Previous update was at 09:12 AM ----------

Quote:
Originally Posted by Scrutinizer
If the files are always grouped and in sorted/increasing order per group, then something like this might suffice:
Code:
awk '{i=$1 FS $5; if(i!=p) {if(p) print p,l,h; l=$2; p=i} h=$3} END{print p,l,h}' file

Which would keep the group order of the input file
Hi Scrutinizer

Thank you. This works exactly I needed, prints chromosome number as well.
Can you please help me understand your code?
 

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LEARN ABOUT LINUX

lsblk

LSBLK(8)						      System Manager's Manual							  LSBLK(8)

NAME

       lsblk - list block devices

SYNOPSIS

       lsblk [options]

       lsblk [options] device...

DESCRIPTION

       lsblk lists information about all or the specified block devices. The lsblk command reads the sysfs filesystem to gather information.

       The  command prints all block devices (except RAM disks) in a tree-like format by default.  Use lsblk --help to get a list of all available
       columns.

OPTIONS

       -a, --all
	      List all block devices.

       -b, --bytes
	      Print the SIZE column in bytes rather than in human-readable format.

       -d, --nodeps
	      Don't print device holders or slaves.  For example "lsblk --nodeps /dev/sda" prints information about the sda device only.

       -e, --exclude list
	      Exclude the devices specified by a comma-delimited list of major device numbers.	Note that RAM  disks  (major=1)  are  excluded	by
	      default.

       -f, --fs
	      Output info about filesystems.  This option is equivalent to "-o NAME,FSTYPE,LABEL,MOUNTPOINT".  The authoritative information about
	      filesystems and raids is provided by the blkid(8) command.

       -h, --help
	      Print a help text and exit.

       -i, --ascii
	      Use ascii characters for tree formatting.

       -m, --perms
	      Output info about device owner, group and mode.  This option is equivalent to "-o NAME,SIZE,OWNER,GROUP,MODE".

       -l, --list
	      Use the list output format.

       -n, --noheadings
	      Do not print a header line.

       -o, --output list
	      Specify which output columns to print.  Use --help to get a list of all supported columns.

       -r, --raw
	      Use the raw output format.

       -t, --topology
	      Output info about block device topology.	This option is equivalent to "-o NAME,ALIGNMENT,MIN-IO,OPT-IO,PHY-SEC,LOG-SEC,ROTA,SCHED".

AUTHORS

       Milan Broz <mbroz@redhat.com>
       Karel Zak <kzak@redhat.com>

SEE ALSO

       findmnt(8), blkid(8), ls(1)

AVAILABILITY

       The lsblk command is part of the util-linux package and is available from ftp://ftp.kernel.org/pub/linux/utils/util-linux/.

Version 1.0							     Apr 2010								  LSBLK(8)
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