Simple ways to pass variations to grep Post: 302651295

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how to pass variable to grep?

Hi I have a such conditional: SPAMH="it is SPAM" if grep -q $SPAMH $NMDIR/$mail; then SPAMHFLAG=1 else SPAMHFLAG=0 fi And grep doesn't catch this string, even it exists there. I think it's a problem with passing $SPAMH to grep. I tried...

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Grep or other ways to output line above and/or below searched line

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I tried searching for answers but didn't find any. When I grep a file results read 4.2.2.2 4.4.4.2 4.5.6.7 But I just want to select each result individually. For Example I want to be able to say variable1="first grep result" variable2="second grep result" variable3="third grep...

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This should be so easy... I want to find all the apps in /Applications that start with the lower case i (e.g. iTunes.app, iSync.app, iCal.app) They should all have the .app extension. I've tried: ls /Applications |grep -o i*.app ls /Applications/i*.app Anyhow, I just want to see what apps...

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Hi! I was looking for files to clean out, and I remembered reading somewhere that you could pipe the output of grep to rm. But I prefer to mv stuff to ~/.Trash/ I thought I'd try something like this: ls ~/Library/Preferences/ |grep '.*.\.iTunes\.plist\..*' |xargs -J % mv % ~/.Trash/ I...

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Variations on a theme...

Well you lot seriously amaze me. There was a thread a few hours ago, (on the date stamp shown in this upload), that generated loads of solutions to a fairly simple problem:- https://www.unix.com/shell-programming-scripting/235829-how-print-particular-character-n-number-times-line.html As a...

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Remove matching pattern on each line with number variations

Hello folks! I have a file containing lines like this Something text 18:37Remove This: 1,111"Keep this text" Some more text 19:37Remove This: 222"Keep this text" More text 20:50Remove This: 3,333Keep this text And more text 25:50Remove This: 44,444Keep this text I would like to...

LEARN ABOUT ULTRIX

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)

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

how to pass variable to grep?

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Grep or other ways to output line above and/or below searched line

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Simple grep Question

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Simple grep question

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