Deleting all content in a file from command line Post: 302080853

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1. Shell Programming and Scripting

deleting file content

hallo..i work in c-shell and i want to delete the content of a file without deleting the file itself...commands like >filename or echo -n > filename didn't work....thanks in advance

2. UNIX for Dummies Questions & Answers

deleting a line but keeping the same file

Hi, I want to delete a line in a file that contains a string. I tried: grep -v "mystring" Myfile > Myfile But this makes the Myfile empty. I read that I need to do something like: grep -v "mystring" Myfile > Myfile.new rm Myfile mv Myfile.new Myfile Is there a way to avoid creating a...

3. Shell Programming and Scripting

deleting blank line and row containing certain words in single sed command

Hi Is it possible to do the following in a single command /usr/xpg4/bin/sed -e '/rows selected/d' /aemu/CALLAUTO/callauto.txt > /aemu/CALLAUTO/callautonew.txt /usr/xpg4/bin/sed -e '/^$/d' /aemu/CALLAUTO/callautonew.txt > /aemu/CALLAUTO/callauto_new.txt exit

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Deleting the first line of .gz file

Hi All, I have too many .gz files (test.gz). Task is to remove first line of each file. Can I do it without unzipping the files? Your help is appreciated.

5. Shell Programming and Scripting

Insert a line in a file by deleting that line from another file

Hi all, I have a huge file(size more that 5GB). I want to do some manupulation with the records and write to another file. As the size of the file is huge and there is a space constraint in that directory, I want to delete that record from first file after writing it in to second file....

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Deleting a pattern in UNIX without deleting the entire line

Hi I have a file: r58778.3|SOURCES={KEY=f665931a...,fw,221-705}|ERRORS={16_1:T,30_1:T,56_1:C,57_1:T,59_1:A,101_1:A,115:-,158_1:C,186_1:A,204:-,271_1:T,305:-,350_1:C,368_1:G,442_1:C,472_1:G,477_1:A}|SOURCE_1="Contig_1092402550638"(f665931a359e36cea0976db191ff60ff09cc816e) I want to retain...

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Deleting Line number from different file

file 1 abcde,dfgdfg,sdfds sdfsd,sdfd,sdfg,sdfs dwfds,sdfgdfg,sdfsdf file2 1 3 i need to delete the line numbers file 1 based on file2 i have taken in loop file 1 and i cant able to delete that line number in file 1 Plz help

8. Shell Programming and Scripting

sed command throwing error while deleting a line from a file

Hi all, I ahve a program which has to delete a line in a file... if i run the sed command through shell prompt it works fine. But if run it using code its throwing error. May i know where i am doing wrong. the file has 3 lines # cat /root/.ssh/known_hosts...

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Deleting the last non blank line from a file

PGW|PGW_CDR_|2017-06-23 141946|2017-07-17 131633|2017-08-21 PGW|PGW_CDR_|2017-06-23 141946|2017-07-17 131633|2017-08-21 PGW|PGW_CDR_|2017-06-23 141946|2017-07-17 131633|2017-08-21 PGW|PGW_CDR_|2017-06-23 141946|2017-07-17 131633|2017-08-21 PGW|PGW_CDR_|2017-06-23 141946|2017-07-17...

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sed command within script wrongly deleting the last line

Hi, I have a shell script which has a for loop that scans list of files and do find and replace few variables using sed command. While doing this, it deletes the last line of all input file which is something wrong. how to fix this. please suggest. When i add an empty line in all my input file,...

LEARN ABOUT DEBIAN

quickbook

QUICKBOOK(1)							   User Commands						      QUICKBOOK(1)

NAME

       Quickbook - WikiWiki style documentation tool geared towards C++ documentation

DESCRIPTION

       QuickBook  is  a  WikiWiki  style  documentation  tool geared towards C++ documentation using simple rules and markup for simple formatting
       tasks.  QuickBook extends the WikiWiki concept. Like the WikiWiki, QuickBook documents are simple text files. A single  QuickBook  document
       can generate a fully linked set of nice HTML and PostScript/PDF documents complete with images and syntax- colorized source code.

       Features include:

	   * generate BoostBook xml, to generate HTML, PostScript and PDF
	   * simple markup to link to Doxygen-generated entities
	   * macro system for simple text substitution
	   * simple markup for italics, bold, preformatted, blurbs, code samples, tables, URLs, anchors, images, etc.
	   * automatic syntax coloring of code samples
	   * CSS support

   Allowed options:
       --help produce help message

       --version
	      print version string

       --no-pretty-print
	      disable XML pretty printing

       --indent arg
	      indent spaces

       --linewidth arg
	      line width

       --input-file arg
	      input file

       --output-file arg
	      output file

       --debug
	      debug mode (for developers)

       --ms-errors
	      use Microsoft Visual Studio style error & warn message format

       -I [ --include-path ] arg include path

SEE ALSO

       The full documentation for Quickbook is maintained in HTML; see /usr/share/doc/libboostX.Y-doc/HTML/doc/html/quickbook.html

Quickbook Version 1.4						     July 2009							      QUICKBOOK(1)

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

deleting file content

Discussion started by: tolkki

2. UNIX for Dummies Questions & Answers

deleting a line but keeping the same file

Discussion started by: laiko

3. Shell Programming and Scripting

deleting blank line and row containing certain words in single sed command

Discussion started by: aemunathan

4. UNIX for Dummies Questions & Answers

Deleting the first line of .gz file

Discussion started by: Chulamakuri