Comments on: Unix Sed Tutorial: 6 Examples for Sed Branching Operation

By: Ajay

Ajay — Sun, 29 Jan 2012 03:57:08 +0000

I also recommend perl.

By: 6 Useful Linux One Liners

6 Useful Linux One Liners — Tue, 28 Sep 2010 06:03:21 +0000

[...] sed command plays a vital role in text manipulation operations. Please refer our Sed Tutorial for detailed explanation about sed [...]

By: cjk

cjk — Thu, 31 Dec 2009 22:21:06 +0000

Writing larger pieces in sed can quickly get awkward (no pun intended). In those cases I recommend Perl, also because it has PCRE which are a lot more logical than the REs of the old tools.

By: Berry

Berry — Fri, 25 Dec 2009 08:18:42 +0000

In Example 2,
4th line, ‘/\n$/!b loop’, the article said it checks if it comes to the last line of the file

but actuallty, it checks whether it is a blank line, because when a blank line appends to the pattern buffer, the pattern buffer only adds a ‘\n’ to seperate the orginal pattern buffer and the new blank line, then the buffer ends with a ‘\n’

it means that the script will not loop if it sees a blank line, so if the file is (for example):

abcd
“efg
blank line
hij”

the script will not remove the text between multiline double quotes

and because the script has checked if it comes to the last line in 2nd line of the script, I wonder can we use ‘b loop’ directly in the 4th line of the script

Thank you very much for sharing so great things with us, ^_^

By: Catalin

Catalin — Thu, 24 Dec 2009 18:51:08 +0000

This is a good article . I like it !