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Special Forums UNIX Desktop Questions & Answers Recommendations for good shell utility to resize JPGs? Post 33362 by deckard on Thursday 2nd of January 2003 01:37:49 AM
Old 01-02-2003
Recommendations for good shell utility to resize JPGs?

Not sure if this is the right place to be posting this. If not, let me know where it fits. I am running RedHat Linux 8.0. I've recently acquired a Sony Mavica digital camera. In short, this thing is awesome (uses cd-rw!). I have been taking high quality images, but I now have the need to try and resize images in a batch process. I can do this manually in GIMP, but that would be time consuming. Since I am dealing with JPEGs of a fixed and proportional size, I would like to be able to just run a bash script that calls a utility to resize the images to 800x600 in a batch. Does anyone have any suggestions?

Thanks,
Deck
 

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RESIZE(1)						      General Commands Manual							 RESIZE(1)

NAME
resize - set TERMCAP and terminal settings to current xterm window size SYNOPSIS
resize [ -u | -c ] [ -s [ row col ] ] DESCRIPTION
Resize prints a shell command for setting the TERM and TERMCAP environment variables to indicate the current size of xterm window from which the command is run. For this output to take effect, resize must either be evaluated as part of the command line (usually done with a shell alias or function) or else redirected to a file which can then be read in. From the C shell (usually known as /bin/csh), the follow- ing alias could be defined in the user's .cshrc: % alias rs 'set noglob; eval `resize`' After resizing the window, the user would type: % rs Users of versions of the Bourne shell (usually known as /bin/sh) that don't have command functions will need to send the output to a tempo- rary file and the read it back in with the ``.'' command: $ resize > /tmp/out $ . /tmp/out OPTIONS
The following options may be used with resize: -u This option indicates that Bourne shell commands should be generated even if the user's current shell isn't /bin/sh. -c This option indicates that C shell commands should be generated even if the user's current shell isn't /bin/csh. -s [rows columns] This option indicates that Sun console escape sequences will be used instead of the special xterm escape code. If rows and columns are given, resize will ask the xterm to resize itself. However, the window manager may choose to disallow the change. FILES
/etc/termcap for the base termcap entry to modify. ~/.cshrc user's alias for the command. SEE ALSO
csh(1), tset(1), xterm(1) AUTHORS
Mark Vandevoorde (MIT-Athena), Edward Moy (Berkeley) Copyright (c) 1984, 1985 by X Consortium See X(1) for a complete copyright notice. BUGS
The -u or -c must appear to the left of -s if both are specified. X Version 11 Release 6.3 RESIZE(1)
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