Sponsored Content
Top Forums UNIX for Dummies Questions & Answers While loop seems to exit when blank line is met Post 302421969 by haaru on Monday 17th of May 2010 07:37:09 AM
Old 05-17-2010
Quote:
Assuming you are using bash
Sorry for not being clear on this. Yes, I am using bash.

Quote:
find out the exit status of this line
It is 0.


I still believe that the problem is, read recognizing empty rows as the end of file and I can't seem to get it to read past that empty line...
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

while loop exit

i wrote a while script as part of a huge program. this script, once picked, begins to output data to the person using it. pretty easy, as the person doesn't have to keep typing commands to get the output that the while loop automatically throws out. now, the thing is, while this while-script... (3 Replies)
Discussion started by: Terrible
3 Replies

2. Shell Programming and Scripting

How to break a loop if condition is met

I am having trouble figuring this code I want to grep a text from a file and if it match certain text it break out of the loop or it should continue searching for the text Here is what I have written but it isn't working while true f=`grep 'END OF STATUS REPORT' filename` do if ... (9 Replies)
Discussion started by: Issemael
9 Replies

3. Shell Programming and Scripting

Replace two blank line with a single blank line

Hi Guys, I have a file in which each set of records are separated by two blank line. I want to replace it with a single blank line. Can you guys help me out? Regards, Magesh (9 Replies)
Discussion started by: mac4rfree
9 Replies

4. Shell Programming and Scripting

Exit from loop

hi, how to exit from "if" loop?actually i have mutliple "if" conditions, i have to exit from each "if" loop,if it is true...:confused: Please suggest me... (3 Replies)
Discussion started by: sreelu
3 Replies

5. Shell Programming and Scripting

Fill the empty line by adding line before blank line

FIle A "A" 2 aa 34 3 ac 5 cd "B" 3 hu 67 4 fg 5 gy output shud be A"" 2 aa 34 "A" 3 ac 34 "A" 5 cd 34 "B" 3 hu 67 "B" 4 fg 67 "B" 5 gy 67 (6 Replies)
Discussion started by: cdfd123
6 Replies

6. Shell Programming and Scripting

do nothing if condition is not met but not exit

Hello all, I created the below script....and it seemed to be working fine. My problem is i want the script to ignore rest of the things if my condition is not met but do not exit.... #!/bin/ksh ########################### ########################### # Set name of the listener, this... (2 Replies)
Discussion started by: abdul.irfan2
2 Replies

7. UNIX for Advanced & Expert Users

While loop only if a condition is met

All, I wrote the following section of code (which logically in PHP would of worked): tmpPATH=${1} tmpTAG=${2} if then while read tmpTAG tmpPATH do fi echo $tmpTAG echo $tmpPATH if then done < ./config.cfg fi (4 Replies)
Discussion started by: Cranie
4 Replies

8. Emergency UNIX and Linux Support

For loop exit

Below for loop not exiting. Can someone help? JBOSS_INST_ARGS=01 02 if ; then for i in $JBOSS_INST_ARGS; do /u/jboss-6.1.0.Final/bin/jboss_init_wise$i.sh start; done (8 Replies)
Discussion started by: vino_hymi
8 Replies

9. Shell Programming and Scripting

In a file, replace blank line by the last line not blank above

Dear All, In a CSV file, say that a given column has been extracted. In that column, information is missing (i.e. blank lines appear). I would like to replace the blank lines by the last valid line (not blank) previously read. For example, consider the extract below: 123 234 543 111... (7 Replies)
Discussion started by: bagvian
7 Replies

10. Shell Programming and Scripting

Find line then evaluate text on next line, print when condition is met

Hello, I am looking for a specific situation in a text file. The conditions are, > <CompoundName> InChI=1S/C5H12NO2/c1-5(2)4-8-6(3)7/h5H,4H2,1-3H3/q+1 I am looking for cases where the line "> <CompoundName>" is followed by a line that contains the string "InChI=" without regard to... (5 Replies)
Discussion started by: LMHmedchem
5 Replies
ppmtosixel(1)						      General Commands Manual						     ppmtosixel(1)

NAME
ppmtosixel - convert a portable pixmap into DEC sixel format SYNOPSIS
ppmtosixel [-raw] [-margin] [ppmfile] DESCRIPTION
Reads a portable pixmap as input. Produces sixel commands (SIX) as output. The output is formatted for color printing, e.g. for a DEC LJ250 color inkjet printer. If RGB values from the PPM file do not have maxval=100, the RGB values are rescaled. A printer control header and a color assignment table begin the SIX file. Image data is written in a compressed format by default. A printer control footer ends the image file. OPTIONS
-raw If specified, each pixel will be explicitly described in the image file. If -raw is not specified, output will default to com- pressed format in which identical adjacent pixels are replaced by "repeat pixel" commands. A raw file is often an order of magni- tude larger than a compressed file and prints much slower. -margin If -margin is not specified, the image will be start at the left margin (of the window, paper, or whatever). If -margin is speci- fied, a 1.5 inch left margin will offset the image. PRINTING
Generally, sixel files must reach the printer unfiltered. Use the lpr -x option or cat filename > /dev/tty0?. BUGS
Upon rescaling, truncation of the least significant bits of RGB values may result in poor color conversion. If the original PPM maxval was greater than 100, rescaling also reduces the image depth. While the actual RGB values from the ppm file are more or less retained, the color palette of the LJ250 may not match the colors on your screen. This seems to be a printer limitation. SEE ALSO
ppm(5) AUTHOR
Copyright (C) 1991 by Rick Vinci. 26 April 1991 ppmtosixel(1)
All times are GMT -4. The time now is 02:19 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy