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Top Forums Shell Programming and Scripting Running rename command on large files and make it faster Post 302549660 by Corona688 on Tuesday 23rd of August 2011 02:55:29 PM
Old 08-23-2011
Quote:
Originally Posted by shoaibjameel123
Hi All,

I have some 80,000 files in a directory which I need to rename. Below is the command which I am currently running and it seems, it is taking fore ever to run this command.
If you can install mmv, you can do mmv '*.xml' '#1.dat' which will be faster than the version with parallel, because it doesn't need to run 80,000 separate instances of mv.

I don't think renaming 80,000 files is ever going to be fast, though. That's 80,000 file tree operations.
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oakdecode(1)						      General Commands Manual						      oakdecode(1)

NAME
oakdecode - Decode an OAKT printer stream into human readable form. SYNOPSIS
oakdecode [options] <OAKT-file DESCRIPTION
oakdecode decodes an OAKT printer stream into human readable form. An OAKT printer stream is the printer langauge used by the HP Color LaserJet 1500 and other printers. COMMAND LINE OPTIONS
These are the options that can appear on the command line. -d basename Basename of .pbm file for saving decompressed planes. -r basename Basename of .jbg file for saving raw planes -i Suppress display of image records. -o Print file offsets. -D level Set Debug level [0]. EXAMPLES
Decode an OAKT file created by foo2oak. $ oakdecode < testpage.oak 0d(80) 1 OTHER 0c(64) Wed Nov 05 16:30:50 2003 a07d3 100005 32001e 0a(80) testpage.pdf 14(16) (no args) 28(16) Source=Tray1 29(80) PaperType=0 UNK8=2,0,0,0, blanks(63) 2a(32) Copies=1 UNK=0 2b(32) papercode=25 xwid=4648 ywid=9000 UNK=0 33(64) u0 u1 w h resx resy nBits x0 x0 2128 4300 600 600 x1 15(16) (no args) bih0 w h l0 bih5 dlen plen unk yOff P subP 3c(64) 00010000 2176 256 256 58030020 1050 1056 000 64 3 0 DL = 0, D = 0, P = 1, - = 0, XY = 2176 x 256 L0 = 256, MX = 32, MY = 0 Order = 3 ILEAVE SMID Options = 88 LRLTWO TPDON TPBON 1 stripes, 0 layers, 1 planes 3c(64) 00010000 2176 256 256 58030020 3668 3680 000 320 3 0 3c(64) 00010000 2176 256 256 58030020 1463 1472 000 640 3 0 3c(64) 00010000 2176 256 256 58030020 1975 1984 000 896 3 0 3c(64) 00010000 2176 224 224 58030020 2744 2752 000 1152 3 0 3c(64) 00010000 2176 256 256 58030020 988 992 000 1440 3 0 3c(64) 00010000 2176 256 256 58030020 2892 2896 000 1696 3 0 3c(64) 00010000 2176 256 256 58030020 3634 3648 000 1952 3 0 3c(64) 00010000 2176 256 256 58030020 3236 3248 000 2208 3 0 3c(64) 00010000 2176 256 256 58030020 2279 2288 000 2464 3 0 3c(64) 00010000 2176 256 256 58030020 3746 3760 000 2720 3 0 3c(64) 00010000 2176 200 200 58030020 2404 2416 000 2976 3 0 3c(64) 00010000 2176 256 256 58030020 3114 3120 000 3240 3 0 3c(64) 00010000 2176 96 96 58030020 1142 1152 000 3496 3 0 3c(64) 00010000 2176 256 256 58030020 2094 2112 000 3752 3 0 3c(64) 00010000 2176 256 256 58030020 1319 1328 000 4008 3 0 3c(64) 00010000 2176 36 36 58030020 208 224 000 4264 3 0 17(16) (no args) 18(16) UNK=0 0b(16) (no args) FILES
/usr/bin/oakdecode SEE ALSO
foo2oak-wrapper(1), foo2oak(1), jbg2pbm(1) AUTHOR
Rick Richardson <rick.richardson@comcast.net> http://foo2oak.rkkda.com/
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