sed or operator Post: 302463252

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1. UNIX for Dummies Questions & Answers

Operator question

I need to find out if a variable contains a certain text string, then do something about it. Here is what I mean, but I don't know how to get a "contains" operator # We have volumes called: # /Volumes/BackupsA_K # /Volumes/BackupsL_Z # /Volumes/Backups_Admin # (could be more, etc)...

2. Shell Programming and Scripting

And operator

I am trying to check two variables and if both are blank I want to set a flag: the_f3_pid=`rsh $target ps -ef | grep "f3.eab" | awk '{print $2}'` the_f7_pid=`rsh $target ps -ef | grep "f7.eab" | awk '{print $2}'` if ; then y=1 fi I get an error: ./script_name: test: 0403-021 ]...

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Or operator with if

hi, i was trying to club to test condition with if. if -o ; then it is giving me error message, i wanted to ask how can we check two condtions with one if.

4. Shell Programming and Scripting

SED * operator

1. echo "abc 123 abc" | sed 's/*/X/' yields - X 123 abc Does this mean the "*" operator matches ONLY the first and the entire token - "abc" and replaces with "X" ? 2. echo "123 abc" | sed 's/*/X/' yields - X123 abc What does this indicate about the "*" operator ??

5. Programming

new operator

Hi, Please clear the 2 questions, 2 Questions, 1) Why the new as a operator? Is there any special reason why it can't be a function like malloc? 2) How are we considering sizeof(),new are as a opearartors? I know + - * / -> , . etc.. are operators, which criteria satisfied by sizeof()...

6. Shell Programming and Scripting

op of logical operator

Why the op of the following code is like this ???? i=4 j=-1 k=0 echo $? echo $? echo $?

7. Shell Programming and Scripting

Difference operator

Dear All, Good day, Just i would like to know that is there anything called difference operator in awk? For example, if a file contains 5 columns (as shown below) with both negative and positive values: Col1 Col2 Col3 Col4 Col5 I need to calculate the difference between Col1 and...

8. UNIX for Dummies Questions & Answers

su with << operator

All, THe below is my script , when i use this i am getting nothing . could any one help me to know what is the use of the << operator below su - $8 << supo echo "exportsph $2 $1 $3 $4" exportsph $2 $1 $3 $4 supo i also tried as individual command su - userid << supo , when i do...

9. UNIX for Dummies Questions & Answers

+= operator

im new to bash scripting and im just using online tutorials and trial and error. i wanted to write a script to read numbers from a file and find their sum: #!/bin/bash theSum=0 for line in $(cat numbers.txt) do let "theSum = theSum + $line" echo "$line" done echo "The sum is...

10. UNIX for Dummies Questions & Answers

Confusion with ++ operator

Can anyone guide me whats happening in this program given below. I got the Output 7 7 12 49... i was expecting 5 16 9 25. First is simple (3+1)*(3+1) Second is again 3*3; i =4 now Third i =5 then 5*5; i don't know where i am going wrong! #include<stdio.h> #define PRODUCT(x) (x*x) int...

LEARN ABOUT V7

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. UNIX for Dummies Questions & Answers

Operator question

Discussion started by: TheCrunge

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And operator

Discussion started by: rcarnesiii

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Or operator with if

Discussion started by: babom

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SED * operator

Discussion started by: sinpeak