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Top Forums Shell Programming and Scripting Dynamic command line generation with awk Post 302405182 by gbagagli on Thursday 18th of March 2010 05:50:13 AM
Old 03-18-2010
Dynamic command line generation with awk

Hi,
I'm not an expert in awk but i need a simple script to do this:

I'd like to AutoCrop PDF files.
I found 2 simple script that combined together could help me to automatize Smilie

The first utiliti is "pdfinfo" that it gives the MediaBox and TrimBox values from the pdf.
The pdfinfo output is:
Code:
[bags@TheBagsMan Scrivania]$ pdfinfo -box '/home/bags/Scrivania/0280.u3_capitolo15.pdf' Creator: Adobe InDesign CS3 (5.0.4) Producer: Adobe PDF Library 8.0 CreationDate: Sun Nov 8 18:52:01 2009 ModDate: Tue Mar 16 14:48:00 2010 Tagged: no Pages: 18 Encrypted: no Page size: 680.268×898.535 pts MediaBox: 0.00 0.00 680.27 898.53 CropBox: 0.00 0.00 680.27 898.53 BleedBox: 28.32 28.32 651.94 870.21 TrimBox: 42.50 42.50 637.77 856.04 ArtBox: 42.50 42.50 637.77 856.04 File size: 29864683 bytes Optimized: no PDF version: 1.6

Once obtained the values I've to give them as imput for another utility "pdfcrop"
Code:
[bags@TheBagsMan Scrivania]$ pdfcrop --margins '-42.50 -42.50 -42.50 -42.49' '/home/bags/Scrivania/0280.u3_capitolo15.pdf' '/home/bags/Scrivania/0280.u3_capitolo15.pdf'

The problem is that the "--margins" option values should be calculated as
Code:
MediaBox - TrimBox single values (the first -42.5 --> 0.00-42.50; second -42.50 --> 0.00-42.50; third -42.50 --> 680.27-637.77; last -42.49 --> 898.53-856.04)

Id like to have an AWK that recreate the pdfcrop command...
Someone can help me?

thx,
Giovanni

Last edited by radoulov; 03-18-2010 at 08:52 AM.. Reason: zaxxon: use code tags please, ty; radoulov - title fixed
 

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SLEEP(1)						    BSD General Commands Manual 						  SLEEP(1)

NAME
sleep -- suspend execution for an interval of time SYNOPSIS
sleep seconds DESCRIPTION
The sleep command suspends execution for a minimum of seconds. If the sleep command receives a signal, it takes the standard action. IMPLEMENTATION NOTES
The SIGALRM signal is not handled specially by this implementation. The sleep command will accept and honor a non-integer number of specified seconds (with a '.' character as a decimal point). This is a non- portable extension, and its use will nearly guarantee that a shell script will not execute properly on another system. EXAMPLES
To schedule the execution of a command for x number seconds later (with csh(1)): (sleep 1800; sh command_file >& errors)& This incantation would wait a half hour before running the script command_file. (See the at(1) utility.) To reiteratively run a command (with the csh(1)): while (1) if (! -r zzz.rawdata) then sleep 300 else foreach i (`ls *.rawdata`) sleep 70 awk -f collapse_data $i >> results end break endif end The scenario for a script such as this might be: a program currently running is taking longer than expected to process a series of files, and it would be nice to have another program start processing the files created by the first program as soon as it is finished (when zzz.rawdata is created). The script checks every five minutes for the file zzz.rawdata, when the file is found, then another portion processing is done courteously by sleeping for 70 seconds in between each awk job. DIAGNOSTICS
The sleep utility exits 0 on success, and >0 if an error occurs. SEE ALSO
nanosleep(2), sleep(3) STANDARDS
The sleep command is expected to be IEEE Std 1003.2 (``POSIX.2'') compatible. HISTORY
A sleep command appeared in Version 4 AT&T UNIX. BSD
April 18, 1994 BSD
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