Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: Simplifying awk/sed short pipeline
Top Forums UNIX for Beginners Questions & Answers Simplifying awk/sed short pipeline Post 303007673 by RudiC on Monday 20th of November 2017 05:41:50 AM
Old 11-20-2017
Probability is high that ALL your code can be combined into one single awk script. Unfortunately your min works only if the first line in output.txt has non-null value, so with your sample data the rest of the algorithm (which I don't really understand) doesn't work out, always printing the input line followed by a zero.
Any corrections to the algorithm?
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Help in simplifying a sed command

I need to do a substitution: CPF to ,C,P,F, CPM to ,C,P,M, SPF to ,S,P,F etc. I can do each of them with separate substitutions e.g. s/CPF/,C,P,F/ but I'd like to know if there is a more elegant solution. In general, how can I use the results of the search in the substitution, ... (3 Replies)
Discussion started by: wvdeijk
3 Replies

2. Shell Programming and Scripting

Simplifying the For loop

Is there a way to simplify stating 1 through to 10, for example in a for loop construct? for x in 1 2 3 4 5 6 7 8 9 10 do .... done I have tried (1-10) with no luck.. thanks (2 Replies)
Discussion started by: sirtrancealot
2 Replies

3. Shell Programming and Scripting

simplifying awk

tcpdump -nr testdump|awk '!/:/;gsub(/^+|+$/,""){print $3};a!~$0;{a=$0};{print $3};!/length/;/./;!/11\:/;!/8 7 6 5 4 3 2 1/;!/UDP/{b=$0} END {for (j=i-1; j>=0; ) print b };{for (i=NF; i>0; i--) printf("%s ",i);printf ("\n")}' *NOTE IN j>=0 the ; ) was given a space since a smiley is showing up...... (1 Reply)
Discussion started by: sil
1 Replies

4. Shell Programming and Scripting

Double Spacing complex sed pipeline

my script: FILE="$1" echo "You Entered $FILE" if ; then tmp=$(cat $FILE | sed '/./!d' | sed -n '/regex/,/regex/{/regex/d;p}'| sed -n '/---/,+2!p' | sed -n '/#/!p' | sed 's/^*//' | sed -e\ s/*:// | sed -n '/==> /!p' | sed -n '/--> /!p' | sed -n '/regex/,+1!p' | sed -n '/======/!p' | sed -n... (1 Reply)
Discussion started by: omgsomuchppl
1 Replies

5. UNIX for Advanced & Expert Users

Simplifying my script

Hi, Is there a way to simplify the below script? Because I am having problems executing this if I added this to CRON. Also, you may notice that its objective is to put all information in one file (rm1.txt). And in addition file "sRMR_6.txt" to sRMR_23.txt" changes its information everyday.... (4 Replies)
Discussion started by: vibora
4 Replies

6. Shell Programming and Scripting

Looking for a short way to summarise many sed commands

Hello, I have a large number of sed commands that I execute one after the other, simply because I don't know if there's a shorter way to do it. I hope someone can help me save some time :-) These are my commands: 1.) remove all " in the file: sed -e 's/\"//g' file 2.) insert ( and... (3 Replies)
Discussion started by: Bloomy
3 Replies

7. Shell Programming and Scripting

need help simplifying an if statement

the code below is a small fragment of the actual line, in fact i have about 20 values i'm comparing and want to know if it can be simplified. other than the x.xx.xx format of the value they have nothing in common if || || ; then do this else do this fiany suggestions? (6 Replies)
Discussion started by: crimso
6 Replies

8. Shell Programming and Scripting

Simplifying sed/tr

Hi all, I don't have much experience with shell scripting and I was wondering if there's a shorter way to write this. Basically, given a list of strings separated by new lines, I want to prepend each string with a prefix and separate the strings with commas i.e. stra strb strc becomes... (3 Replies)
Discussion started by: vshan
3 Replies

9. UNIX for Dummies Questions & Answers

Submitting awk script into cluster short.q

Hello, I want to submit my awk script into cluster queue as my job takes about forty minutes to finish so I can not run it on the main node. My awk script is like the following and I have three files. so, I write : qsub -q short.q Myscript.awk file1 file2 file3 It submits the work into... (1 Reply)
Discussion started by: Homa
1 Replies

10. UNIX for Beginners Questions & Answers

Simplifying awk script using multiple "|"

I have the following script: awk -F "," '{ if ( $4 > 450 && $4 < 550 && $5 > 0.5 ) print $2, $5; else print $2, "0" }' test.txt | awk '{a+=$2}END{for(i in a){print i, a}}' | sort -nk 1.2 | sed 1,2d and a bunch of files that look like the test file attached here. I am outputting all... (2 Replies)
Discussion started by: Xterra
2 Replies

LEARN ABOUT REDHAT

ppm2tiff

PPM2TIFF(1)						      General Commands Manual						       PPM2TIFF(1)

NAME

       ppm2tiff - create a TIFF file from a PPM image file

SYNOPSIS

       ppm2tiff [ options ] [ input.ppm ] output.tif

DESCRIPTION

       ppm2tiff converts a file in the PPM image format to TIFF.  By default, the TIFF image is created with data samples packed (PlanarConfigura-
       tion=1), compressed with the Lempel-Ziv & Welch algorithm (Compression=5), and with each strip no more than 8 kilobytes.  These	character-
       istics can be overriden, or explicitly specified with the options described below

       If the PPM file contains greyscale data, then the PhotometricInterpretation tag is set to 1 (min-is-black), otherwise it is set to 2 (RGB).

       If no PPM file is specified on the command line, ppm2tiff will read from the standard input.

OPTIONS

       -c     Specify  a  compression  scheme to use when writing image data: -c none for no compression, -c packbits for the PackBits compression
	      algorithm, -c jpeg for the baseline JPEG compression algorithm, -c zip for the Deflate compression algorithm, and -c lzw for Lempel-
	      Ziv & Welch compression (the default).

       -r     Write data with a specified number of rows per strip; by default the number of rows/strip is selected so that each strip is approxi-
	      mately 8 kilobytes.

       -R     Mark the resultant image to have the specified X and Y resolution (in dots/inch).

SEE ALSO

       tiffinfo(1), tiffcp(1), tiffmedian(1), libtiff(3)

								 October 15, 1995						       PPM2TIFF(1)
All times are GMT -4. The time now is 10:45 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy