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Top Forums UNIX for Dummies Questions & Answers Explanation of the sort command Post 302758735 by jimbojames on Sunday 20th of January 2013 04:28:57 PM
Old 01-20-2013
Hi Don,

Sorry for the confusion, this is part of a script that was created by someone who no longer works here, and I was trying to use part of the functionality in a new script that I was creating.

I've managed to modify it using
Code:
FILENAME=$(ssh ${DEST_SERV} "ls ${DEST_LOCATION}/${FILES} | sort -r -k 4n | head -1")

which is then followed with
Code:
ssh ${DEST_SERV} "ls ${DEST_LOCATION}/${FILES} | grep -v ${FILENAME} | xargs rm -rf"

to remove the unwanted files.

I was confused with what the
Code:
4,4n

was doing, but your explanation has helped with this, although I still don't understand what the 4 before the comma is doing.

Thanks for your help.
 

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ROBOCUT(1)							   User Commands							ROBOCUT(1)

NAME
Robocut - is used with cutting plotters. DESCRIPTION
The `Robocut' program plots or cuts SVG files on a Craft Robo or Silhouette SD or most likely any other customer grade Graphtec cutting plotter. Usage: robocut [OPTIONS...] [File] Help Options: --help Show summary of options. --version Show version information and copyright details. --show Show all the parameters entered and the defaults. Application Options: -s, --no-sort Stop sort the objects from the SVG before plotting. -t, --bb-sort Sort the objects by bounding box, good for letters. This will cut out the inside first and than the outside. --cut Shows the cutting dialogue after start. --media INT Select the media. See drop down box. -g, --speed INT The speed between 1 and 33. -p, --pressure INT The pressure between 1 and 10. --track-enhancing Move three times back and forward to create a track. --margin-top DOUBLE Define the margin on top in mm. --margin-right DOUBLE Define the margin right in mm. Registration Mark Options: -r, --reg-mark-auto Use registration marks and find the marks automatically. --reg-mark Use registration marks but set the knife manually on top the round mark. -a, --reg-dimension-width DOUBLE Specify the length in mm between the the two horizontal marks. -b, --reg-dimension-height DOUBLE Specify the length in mm between the the two vertical marks. -c, --reg-origin-width DOUBLE Specify the length in mm between the the edge of the paper and the first horizontal mark. -d, --reg-origin-height DOUBLE Specify the length in mm between the the edge of the paper and the first vertical mark. Device Options: --usb-vendor-id INT Try this program with other usb hardware on your own risk. You need to convert hex to dec. --usb-product-id INT May also work with other hardware, try usb-devices program to scan your computer. ENVIRONMENT
QT SVG only supports the SVG 1.2 Tiny standard and this has a limited SVG support. For example multiline text is something that is no sup- ported by Robocut, however you can export your text to a path or just create each line separate. AUTHOR
Written by Tim Hutt and Markus Schulz <schulz@alpharesearch.de> REPORTING BUGS
Report bugs to https://bugs.launchpad.net/robocut/+filebug. COPYRIGHT
Copyright (C) 2010 This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICU- LAR PURPOSE. Robocut V1.0.8 August 2011 ROBOCUT(1)
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