fun with tar Post: 614

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1. News, Links, Events and Announcements

Fun with FreeBSD

Fun With Automounting on FreeBSD Link: Nice tips for FreeBSD Unix. http://ezine.daemonnews.org/200202/automounting.html

2. UNIX for Advanced & Expert Users

Hai Friends I have installed FreeBSD in my system... I have installed it to work in text mode don't have the GUI. The default text color is Black background with White Foreground. I want it to be with Black background with Green Foreground. How could i do that. Thanks in advance Collins

3. UNIX for Dummies Questions & Answers

tar -cvf test.tar `find . -mtime -1 -type f` only tar 1 file

Hi all, 4 files are returned when i issue 'find . -mtime -1 -type f -ls'. ./ora_475244.aud ./ora_671958.aud ./ora_934052.aud ./ora_934050.aud However, when I issued the below command: tar -cvf test.tar `find . -mtime -1 -type f`, the tar file only contains the 1st file -...

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fun scripts

Lets get a list of everyones funny scripts

5. Shell Programming and Scripting

Fun with awk

uggc://ra.jvxvcrqvn.bet/jvxv/EBG13 #!/usr/bin/awk -f BEGIN { for (n=0;n<26;n++) { x=sprintf("%c",n+65); y=sprintf("%c",(n+13)%26+65) r=y; r=tolower(y) } } { b = "" for (n=1; x=substr($0,n,1); n++) b = b ((y=r)?y:x) print b } ...

6. Shell Programming and Scripting

More fun with awk

#!/usr/bin/ksh ls -l $@ | awk ' /^-/ { l = 5*log($5) h = sprintf("%7d %-72s",$5,$8) print "\x1B ls command with histogram of file sizes. The histogram scale is logaritmic, to avoid very short bars for smaller files or very long bars for bigger files. Screenshot:

7. Shell Programming and Scripting

tar command to explore multiple layers of tar and tar.gz files

Hi all, I have a tar file and inside that tar file is a folder with additional tar.gz files. What I want to do is look inside the first tar file and then find the second tar file I'm looking for, look inside that tar.gz file to find a certain directory. I'm encountering issues by trying to...

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ppmtopgm

ppmtopgm(1)                                                   General Commands Manual                                                  ppmtopgm(1)

NAME

       ppmtopgm - convert a portable pixmap into a portable graymap

SYNOPSIS

       ppmtopgm [ppmfile]

DESCRIPTION

       Reads  a  portable  pixmap  as  input.  Produces a portable graymap as output.  The output is a "black and white" rendering of the original
       image, as in a black and white photograph.  The quantization formula used is .299 r + .587 g + .114 b.

       Note that although there is a pgmtoppm program, it is not necessary for simple conversions from pgm to ppm , because any  ppm  program  can
       read  pgm  (and  pbm  ) files automatically.  pgmtoppm is for colorizing a pgm file.  Also, see ppmtorgb3 for a different way of converting
       color to gray.  And ppmdist generates a grayscale image from a color image, but in a way that makes it easy to differentiate  the  original
       colors, not necessarily a way that looks like a black and white photograph.

QUOTE

       Cold-hearted orb that rules the night
       Removes the colors from our sight
       Red is gray, and yellow white
       But we decide which is right
       And which is a quantization error.

SEE ALSO

       pgmtoppm(1),ppmtorgb3(1),rgb3toppm(1),ppmdist(1),ppm(5),pgm(5)

AUTHOR

       Copyright (C) 1989 by Jef Poskanzer.

                                                                   10 April 2000                                                       ppmtopgm(1)