grep or sed. How to remove certain characters Post: 302438722

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

sed to remove last 2 characters of txt file

sed 's/^..//' file1.txt > file2.txt this will remove the first two characters of each line of a text file, what sed command will remove the last two characters? This is a similar post to my other....sry if I'm being lazy.... I need a file like this (same as last post) >cat file1.txt 10081551...

2. Shell Programming and Scripting

sed: remove characters between and including 2 strings

I have the following line: 4/23/2010 0:00:38.000: Copying $$3MSYDDC02$I would like to use sed (or similiar) to remove everthing between and including $ that appears in the line so it ends up like this. 4/23/2010 0:00:38.000: Copying 3MSYDDC02I have been trying these but i'm really just...

3. UNIX for Dummies Questions & Answers

sed command to remove characters help!

I am trying to analyse a large file of sequencing data, example of first 10 lines below, @HWUSI-EAS656_0044_FC:7:1:2447:1039#GCAATT/1 GNCTATGGCTTGCCGGGCTCAGGGAAGACAATCATAGCCATGAAAATCATGGAAAAGATCAGAAAAACATTTCAA +HWUSI-EAS656_0044_FC:7:1:2447:1039#GCAATT/1...

4. Shell Programming and Scripting

Sed or trim to remove non alphanumeric and alpha characters?

Hi All, I am new to Unix and trying to run some scripting on a linux box. I am trying to remove the non alphanumeric characters and alpha characters from the following line. <measResults>883250 869.898 86432.4 809875.22 804609 60023 59715 </measResults> Desired output is: 883250...

5. Shell Programming and Scripting

sed or tr to remove specific group of special characters

Hi, I have a input of the form: ..., word1, word2, word3... I want out put of the form word1, word2, word3 I tried echo '..., word1, word2, word3...' | tr -d '...,' but that takes out the commas in the middle too so I get word1 word2 word3 but I want the commas in the middle. ...

6. Shell Programming and Scripting

Remove the Characters '[' and ']' with Sed

Hi, I am new to Sed and would like to know if it is possible to remove the characters . I have a couple of files with a keyword and would like to remove the substring. I am Using sed s/// but Its not working Thanks for your Support Andrew Borg

7. Shell Programming and Scripting

Sed - remove special characters

Hi, I have a file with this line, it's always in the first line: I want to remove these special characters: �╗┐ file1 �╗┐\\bar\c$\test2\;3.348.118 Bytes;160 ;3 \\bar\c$\test\;35 Bytes;2 ;1 I want the same file to be only \\bar\c$\test2\;3.348.118 Bytes;160 ;3 \\bar\c$\test\;35...

8. Shell Programming and Scripting

How does this sed expression to remove non-alpha characters work?

Hello! I know that this expression gets rid of non-alphanumeric characters: sed 's///g' and I understand that it is replacing them with nothing - hence the '//'-, but I don't understand how it's doing it. It seems it's finding strings that begin with alphanumeric and replacing them with...

9. Shell Programming and Scripting

Grep to remove non-ASCII characters

I have been having an encoding problem that I need to solve. I have an 4-column tab-separated file: I need to remove all of the lines that contain the string 'vis-�-vis' achiever-n vis-�-vis+ns-j+vp oppose-v 1 achiever-n vis-�-vis+ns-the+vg assess-v 1 administrator-n ...

10. Shell Programming and Scripting

Grep to remove and add specified characters

I have the following type of 2 column file: motility - role - supplementation - age b ancestry b purity b recommendation b serenity b unease b carving f expansion f I would like to print only certain sections of the file depending on the value of the second column. For instance,...

LEARN ABOUT DEBIAN

perl::critic::policy::builtinfunctions::prohibitlvaluesubstr

Perl::Critic::Policy::BuiltinFunctions::ProhibitLvalueSuUser(Contributed Perl DocPerl::Critic::Policy::BuiltinFunctions::ProhibitLvalueSubstr(3pm)

NAME

       Perl::Critic::Policy::BuiltinFunctions::ProhibitLvalueSubstr - Use 4-argument "substr" instead of writing "substr($foo, 2, 6) = $bar".

AFFILIATION

       This Policy is part of the core Perl::Critic distribution.

DESCRIPTION

       Conway discourages the use of "substr()" as an lvalue, instead recommending that the 4-argument version of "substr()" be used instead.

	   substr($something, 1, 2) = $newvalue;     # not ok
	   substr($something, 1, 2, $newvalue);      # ok

       The four-argument form of "substr()" was introduced in Perl 5.005.  This policy does not report violations on code which explicitly
       specifies an earlier version of Perl (e.g. "use 5.004;").

CONFIGURATION

       This Policy is not configurable except for the standard options.

SEE ALSO

       "substr" in perlfunc (or "perldoc -f substr").

       "4th argument to substr" in perl5005delta

AUTHOR

       Graham TerMarsch <graham@howlingfrog.com>

COPYRIGHT

       Copyright (c) 2005-2011 Graham TerMarsch.  All rights reserved.

       This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

perl v5.14.2							    2012-06-07	 Perl::Critic::Policy::BuiltinFunctions::ProhibitLvalueSubstr(3pm)