printing lines to a file from a particular string Post: 302398441

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1. Shell Programming and Scripting

printing first n lines in a file without using head

i have to print first n lines of a file. how can i do that without using head command. for some reason i do not want to use Head. is there a way to get that result using awk or sed?. i an using this on korn shell for AIX Thanks..

2. Shell Programming and Scripting

Printing the lines which proceeds the particular string

Hi, We are facing some issues while finding the particular string. Our file is: cat 1.txt Node Name(s) Preparation fragment Partition: Transformation instance: Transformation: Applied rows: Affected rows: Rejected rows: Throughput(Rows/Sec): Throughput(Bytes/Sec): Last...

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Counting no. of lines and printing it at the start of the file

Dear users, I need to count the number of lines in a simple text file and print the number on the first line of that same file. I know I can count the lines using wc -l file.txt this gives for example 100 file.txt I need the number 100 to be printed at the very top of file.txt...

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Printing 10 lines above and below the search string: help needed

Hi, The below code will search a particular string(say false in this case) and return me 10 lines above and below the search string in a file. " awk 'c-->0;$0~s{if(b)for(c=b+1;c>1;c--)print r;print("***********************************");print;c=a;}b{r=$ 0}' b=10 a=10 s="false" " ...

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replace (sed?) a single line/string in file with multiple lines (string) from another file??

Can someone tell me how I can do this? e.g: Say file1.txt contains: today is monday the 22 of NOVEMBER 2010 and file2.txt contains: the 11th month of How do i replace the word NOVEMBER with

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Printing all lines before a specific string and a custom message 2 lines after

Hello all, I need to print all the lines before a specific string and print a custom message 2 lines after that. So far I have managed to print everything up the string, inclusively, but I can't figure out how to print the 2 lines after that and the custom message. My code thus far is:...

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Trouble printing multiple lines to a new file

Hi, I'm trying to auto generate some php files with a default preamble at the top which is a block comment. The problem is that my output has no new lines and it looks like the output from "ls" is being printed after everyline This is my code #!/bin/bash read -d '' pre_amble...

8. Shell Programming and Scripting

Printing the lines that appear in an other file, and the three lines after them

Hi ! I need some help with a script I am writing. I am trying to compare two files, the first file being in this format : Header1 Text1-1 Text1-2 Text1-3 Header2 Text2-1 etc... For each header, I want to check if it appears in the second file, and if it is the case print the header...

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Printing the lines of the string with highest value

Please help . The script need to first grep for all lines with "C:" as it contains a value Here the value is 0 1,00: This , is a good script c:0 and then give output of the lines with top 3 highest value for c: 1,00: This , is a nice script c:9999 1,00: This , is a...

10. Shell Programming and Scripting

Help in printing n number of lines if a search string matches in a file

Hi I have below script which is used to grep specific errors and if error string matches send an email alert. Script is working fine , however , i wish to print next 10 lines of the string match to get the details of error in the email alert Current code:- #!/bin/bash tail -Fn0 --retry...

LEARN ABOUT FREEBSD

pnmdepth

pnmdepth(1)                                                   General Commands Manual                                                  pnmdepth(1)

NAME

       pnmdepth - change the maxval in a portable anymap

SYNOPSIS

       pnmdepth newmaxval [pnmfile]

DESCRIPTION

       Reads a portable anymap as input.  Scales all the pixel values, and writes out the image with the new maxval.  Scaling the colors down to a
       smaller maxval will result in some loss of information.

       Be careful of off-by-one errors when choosing the new maxval.  For instance, if you want the color values to be five bits wide, use a  max-
       val of 31, not 32.

       One  important  use  of pnmdepth is to convert a new format 2-byte-per-sample PNM file to the older 1-byte-per-sample format.  Before April
       2000, essentially all raw (binary) format PNM files had a maxval less than 256 and one byte per sample, and many programs may rely on that.
       If  you  specify  a  newmaxval  less than 256, the resulting file should be readable by any program that worked with PNM files before April
       2000.

SEE ALSO

       pnm(5), ppmquant(1), ppmdither(1)

AUTHOR

       Copyright (C) 1989, 1991 by Jef Poskanzer.

                                                                   08 April 2000                                                       pnmdepth(1)

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

printing first n lines in a file without using head

Discussion started by: dareman123

2. Shell Programming and Scripting

Printing the lines which proceeds the particular string

Discussion started by: Amey Joshi

3. UNIX for Dummies Questions & Answers

Counting no. of lines and printing it at the start of the file

Discussion started by: jenjen_mt

4. Shell Programming and Scripting

Printing 10 lines above and below the search string: help needed

Discussion started by: vimalm22