Quoting Characters Post: 302382187

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Wildcards and quoting

Hi All In a script, I want a user to enter 4 characters, these can be a mix of letters (uppercase and lowercase) and numbers. In this example $var represents what the user has entered. eg $var can be A9xZ, 3DDL, bbHp .........etc I need to check that the user has only entered characters...

2. UNIX for Dummies Questions & Answers

Quoting of special characters

Hello, I am getting very confused as to where should i quote special/metacharacters in shell. Sometimes i write * directly and it works, othertimes i have to do "*". Same is the case with other special characters like /,\,.,$,etc. Can somebody give me link to somewhere where i can found...

3. Shell Programming and Scripting

quoting in conditional statement

can somebody help, what quote i should use in below statement or what wrong of it ? the 1st (*) is a char, the 2nd and 3rd (*) is a wildcard if ] && ] && ] ................^ .............^ then echo "ok" fi thanks in advance.

4. Shell Programming and Scripting

Quoting problem with `date`

I'm trying to take the command `date` giving me: Fri Feb 22 09:23:52 EST 2008 and using some command take out the rest of the string leaving me with "Fri Feb 22" any help appreciated hopefully thanks in advance

5. Shell Programming and Scripting

quoting question

hi guys, i have a question related to quoting but i am not sure how to formulate it... lets say we want to simulate the following shell actions cd ~/project-dir ctags /home/work/folder1/*.sh /home/work/folder2/*.sh /home/work/folder3/*.sh so i make the following script buidtags.sh ...

6. Shell Programming and Scripting

quoting just selected words

Hi all, i have a file that looks like: one:two:three:four:five six:seven:eight:nine:ten and i'd like to quote the fourth column, getting: one:two:three:"four":five six:seven:eight:"nine":ten i was thinking something like: awk 'BEGIN{FS=":"}{print $1 FS $2 FS $3 FS \"$4\" FS $5}'...

7. Shell Programming and Scripting

quoting hell - help needed!!

I am writing a bash script to automate the installation of web environment on a base install of Fedora. And I'm at the limit of my last nerve and my bash skills. My brain is screaming at me: "Give up and use perl", but I am trying to stick to bash since the script will modify the perl environment...

8. Shell Programming and Scripting

Quoting / interface question

Hi, My first shell script is one that prints the five largest directories in a given directory. My current effort is as follows, it gives me the output I'd like, but I have to quote a globbed pathname, which seems wrong: #!/bin/sh du -hs $1 | sort -rn | head -n 5 And I must invoke...

9. Shell Programming and Scripting

Quoting the values in second field

Hi, I have got a file comp_data containing the below data : 38232836|9302392|49 39203827|8203203,3933203|52 72832788|567,3245,2434324|100 This file can have many rows like shown above. I want the values separated by "," in second column(taking "|" as delimiter) to be in quotes. These...

10. Shell Programming and Scripting

Help with Bash quoting

I am trying to write a BASH script that will prompt a user to enter a number of days, then calculate the date. My problem is the date command uses single or double quotes. For Example.. date -d "7 days" Here is an example of some same code I am trying to work through. echo "when do you...

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

Wildcards and quoting

Discussion started by: Bab00shka

2. UNIX for Dummies Questions & Answers

Quoting of special characters

Discussion started by: vibhor_agarwali

3. Shell Programming and Scripting

quoting in conditional statement

Discussion started by: 3Gmobile

4. Shell Programming and Scripting

Quoting problem with `date`

Discussion started by: cleansing_flame