extract a line from a file by line number Post: 302513431

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1. Shell Programming and Scripting

Extract a line from a file using the line number

I have a shell script and want to assign a value to a variable. The value is the line exctrated from a file using the line number. The line number it is not fix, and could change any time. I have tried sed, awk, head .. See my script # Get randome line number from the file #selectedline = `awk...

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how to get the data from line number 1 to line number 100 of a file

Hi Everybody, I am trying to write a script that will get some perticuler data from a file and redirect to a file. My Question is, I have a Very huge file,In that file I have my required data is started from 25th line and it will ends in 100th line. I know the line numbers, I need to get all...

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extract a line from a file using the line number

Hello, I am having trouble extracting a specific line from a file when the line number is known. My first attempt involved grep -n 'hi' (the word 'hi will always be there) to get the line number before the line that I actually want (line 4). Extra Notes: -I am working in a bash script. -The...

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extract the lines between specific line number from a text file

Hi I want to extract certain text between two line numbers like 23234234324 and 54446655567567 How do I do this with a simple sed or awk command? Thank you. ---------- Post updated at 06:16 PM ---------- Previous update was at 05:55 PM ---------- found it: sed -n '#1,#2p'...

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How to read contents of a file from a given line number upto line number again specified by user

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Extract a number from a line in a file and sed in another copied file

Dear all, I am trying to extract a number from a line in one file (task 1), duplicate another file (task 2) and replace all instances of the strings 300, in duplicated with the extracted number (task 3). Here is what I have tried so far: for ((k=1;k<4;k++)); do temp=`sed -n "${k}p"...

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Hi, I search all forum, but I can not find solutions of my problem :( I have multiple files (5000 files), inside there is this data : FILE 1: 1195.921 -898.995 0.750312E-02-0.497526E-02 0.195382E-05 0.609417E-05 -2021.287 1305.479-0.819754E-02 0.107572E-01 0.313018E-05 0.885066E-05 ...

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HELP: Shell Script to read a Log file line by line and extract Info based on KEYWORDS matching

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Perl to extract information from a file line by line

In the below perl code I am using tags within each line to extract certain information. The tags that are used are: STB >0.8 is STRAND BIAS otherwise GOOD FDP is the second number GO towards the end of the line is read into an array and the value returned is outputed, in the first line that...

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zgrep

ZGREP(1)						      General Commands Manual							  ZGREP(1)

NAME

       zgrep - search possibly compressed files for a regular expression

SYNOPSIS

       zgrep [ grep_options ] [ -e ] pattern filename...

DESCRIPTION

       Zgrep  invokes  grep  on  compressed  or  gzipped  files.   These  grep	options  will  cause  zgrep  to  terminate  with  an  error  code:
       (-[drRzZ]|--di*|--exc*|--inc*|--rec*|--nu*).  All other options specified are passed directly to grep.  If no file is specified,  then  the
       standard input is decompressed if necessary and fed to grep.  Otherwise the given files are uncompressed if necessary and fed to grep.

       If the GREP environment variable is set, zgrep uses it as the grep program to be invoked.

EXIT CODE

       2 - An option that is not supported was specified.

AUTHOR

       Charles Levert (charles@comm.polymtl.ca)

SEE ALSO

       grep(1), gzexe(1), gzip(1), zdiff(1), zforce(1), zmore(1), znew(1)

																	  ZGREP(1)

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Extract a line from a file using the line number

Discussion started by: zambo

2. Shell Programming and Scripting

how to get the data from line number 1 to line number 100 of a file

Discussion started by: Anji

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extract a line from a file using the line number

Discussion started by: grandtheftander

4. Shell Programming and Scripting

extract the lines between specific line number from a text file

Discussion started by: return_user