SED: Extracting text between first occurance of foo in front of bar
Suppose I have a text file that contains the tags <foo> and <bar>. The text file can have unlimted occurances of <foo> and <bar> and looks somthing like this:
There is no set amount of times <foo> occurs before or after <bar>. In this example there are two occurrences before, but there could be more or less. The only unique identifier in the file is <bar> so the logic has to be based around it. My question is how do I write a SED function that extracts the text between <bar> and the <foo> above it?
Hello all,
I have a situation where I have a web root directory with a few thousand users spread out into 100 subdirectories in a 00/firstname.lastname, 01/firstname.lastname, etc. hierarchy. I suddenly need to make sure that each of these user directories contains a default index.html file... (6 Replies)
Hi All,
This is Ram. I'm new to this forum & new to shell scripts as well. I've a requirement in which I want to extract a substring from a given string based on last occurance of a character.
for eg.
I have a string of a file name with absolute path like... (2 Replies)
I keep trying to append some astrix to the end of a line, but it keeps overwriting at the front of the line.
These are the originals
Fred Fardbarkle:674-843-1385:20 Parak Lane, Duluth, MN 23850:4/12/23:780900
Fred Fardbarkle:674-843-1385:20 Parak Lane, Duluth, MN 23850:4/12/23:780900
... (5 Replies)
I'm not all that much of a newbie but I've not encountered this before. Happens both in Cygwin and in Mac OS X (Darwin):
cp -R /path/to/foo/.* /path/to/bar
(where directory 'bar' exists)
... seems to copy not only the contents of directory 'foo', but also other directories that are... (3 Replies)
Sometimes it works for me and sometimes I get this error:
syntax error on line 1, teletype
Basically I've got no idea whats going on, especially at the end of the command: bc
Any help is appreciated (1 Reply)
Hi,
I have a document with usual English text and some of the words have apostrophes (e.g. don't, can't, etc.)
I would like all these apostrophes to be doubled (e.g. don''t, can''t, etc.), but the problem is, that some of such words have double apostrophe and
by using sed -i "s/'/''/g"... (2 Replies)
I have text file as follows and would like to remove the last occurance of "UNION ALL" string and replace @@ with single quote (').
Input text in file is
with temp as (
( select ----------- where OPERATION = @@B@@ and OBJECTTYPE = @@P@@ and start_time desc ) UNION ALL
( select... (9 Replies)
I am writing a BASH script to update a webserver and then restart Apache. It looks basically like this:
#!/bin/bash
rsync /path/on/local/machine/ foo.com:path/on/remote/machine/
ssh foo.com sudo /etc/init.d/apache2 reloadrsync and ssh don't prompt for a password, because I have DSA encryption... (9 Replies)
Here is my task, I feel sure this can be accomplished with see/awk but can't seem to figure out how.
I have large flat file from which I need to extract every case of a pairing of characters (GG) in this case PLUS the previous 20 characters. The output should be a list (which I plan to make... (17 Replies)
I am just trying to add specific text in front of a ${variant} but can not seem to get the syntax correct.
I have tried sed -i '$a NM_004004.5' ${variant} and printf "NM_004004.5:%s\n" ${variant} with no luck.
Thank you :). (7 Replies)
Perl::Critic::Policy::ValuesAndExpressions::ProhibitMixeUserlContributPerl::Critic::Policy::ValuesAndExpressions::ProhibitMixedBooleanOperators(3)NAME
Perl::Critic::Policy::ValuesAndExpressions::ProhibitMixedBooleanOperators - Write " !$foo && $bar || $baz " instead of " not $foo && $bar
or $baz".
AFFILIATION
This Policy is part of the core Perl::Critic distribution.
DESCRIPTION
Conway advises against combining the low-precedence booleans ( "and or not" ) with the high-precedence boolean operators ( "&& || !" ) in
the same expression. Unless you fully understand the differences between the high and low-precedence operators, it is easy to misinterpret
expressions that use both. And even if you do understand them, it is not always clear if the author actually intended it.
next if not $foo || $bar; #not ok
next if !$foo || $bar; #ok
next if !( $foo || $bar ); #ok
CONFIGURATION
This Policy is not configurable except for the standard options.
AUTHOR
Jeffrey Ryan Thalhammer <jeff@imaginative-software.com>
COPYRIGHT
Copyright (c) 2005-2011 Imaginative Software Systems. All rights reserved.
This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself. The full text of this license
can be found in the LICENSE file included with this module.
perl v5.16.320Perl::Critic::Policy::ValuesAndExpressions::ProhibitMixedBooleanOperators(3)