Nothing Special   »   [go: up one dir, main page]
Scribd Logo
Upload

Welcome to Scribd!

  • 70 views

    Sed Awk Commands

    Uploaded by

    Lakshminarayana Sama
    This document provides examples of useful sed and awk commands for printing specific lines from files, deleting lines, filtering files by size, and adding or removing lines. It shows how to print only blank lines, the first and last line, all lines except the first, and delete all lines except the first using sed commands. It also demonstrates how to list only zero byte files, add a header and trailer to a file, and output even and odd numbered records to separate files using awk. Additionally, it includes sed commands for removing empty lines.

    Copyright:

    © All Rights Reserved
    Download as TXT, PDF, TXT or read online from Scribd

    Sed Awk Commands

    Uploaded by

    Lakshminarayana Sama
    70 views2 pages
    This document provides examples of useful sed and awk commands for printing specific lines from files, deleting lines, filtering files by size, and adding or removing lines. It shows how to print only blank lines, the first and last line, all lines except the first, and delete all lines except the first using sed commands. It also demonstrates how to list only zero byte files, add a header and trailer to a file, and output even and odd numbered records to separate files using awk. Additionally, it includes sed commands for removing empty lines.

    Original Description:

    Copyright

    © © All Rights Reserved

    Available Formats

    TXT, PDF, TXT or read online from Scribd

    Did you find this document useful?

    Is this content inappropriate?

    This document provides examples of useful sed and awk commands for printing specific lines from files, deleting lines, filtering files by size, and adding or removing lines. It shows how to print only blank lines, the first and last line, all lines except the first, and delete all lines except the first using sed commands. It also demonstrates how to list only zero byte files, add a header and trailer to a file, and output even and odd numbered records to separate files using awk. Additionally, it includes sed commands for removing empty lines.

    Copyright:

    © All Rights Reserved
    Download as TXT, PDF, TXT or read online from Scribd
    Download as txt, pdf, or txt
    70 views2 pages

    Sed Awk Commands

    Uploaded by

    Lakshminarayana Sama
    This document provides examples of useful sed and awk commands for printing specific lines from files, deleting lines, filtering files by size, and adding or removing lines. It shows how to print only blank lines, the first and last line, all lines except the first, and delete all lines except the first using sed commands. It also demonstrates how to list only zero byte files, add a header and trailer to a file, and output even and odd numbered records to separate files using awk. Additionally, it includes sed commands for removing empty lines.

    Copyright:

    © All Rights Reserved
    Download as TXT, PDF, TXT or read online from Scribd
    Download as txt, pdf, or txt
    of 2

    Sed/Awk Top Commands(Unix interview questions)

    In this post i will mention very useful sed/awk commands,These are quite handy i
    n day to day work and also useful in unix interview.

    How to Print only Blank Line of File.

    sed -n '/^$/p' Test_file.txt

    To Print First and Last Line using Sed Command
    sed -n 1p Test_file.txt

    sed n $p Test_file.txt

    To Print all line Except First Line
    sed n 1!p Test_file.txt

    Delete all Line except First Line
    sed n 1!d Test_file.txt

    How to get only Zero Byte files which are present in the directory

    ls -ltr| awk '/^-/ { if($5 ==0) print $9 }'

    How add a First record and Last Record to the current file in Linux

    sed -i -e '1i Header' -e '$a Trailor' test_file.txt

    How to display Even number of records into one file and Odd number of records in
    to another file
    awk 'NR %2 == 0' test_files.txt

    awk 'NR %2 != 0' test_files.txt
    Remove all empty lines:
    sed '/^$/d' test_file.txt

    sed '/./!d' test_file.txt

    You might also like