I have one question regarding sed regexp (or any regexp in general),
I have some path like this
C:/Abc/def/ghi/jkl in a file file1
Now if i use following code
Now it give me following output
C:/Abc/def/ghi, which is fine
But i just want to know that in this sed code, why it is treating only last forward slash in file1 as the base for creating value of subsection (.*). i mean to say why it is treating C:/Abc/def/ghi as value of subsection. We are having 5 forward slashes in file1, why not it is picking upto C:/Abc/def.
Is that the property of regexp that if a sentence has five forward slashes & i use .*/.*, it will treat forward slash as last forward slash in file.
Can any one please suggest me some article/link to this question. I hope you are getting my question.
please help:
I want to add 1 space between string and numbers:
input file:
abcd12345
output file:
abcd 1234
The following sed command does not work:
sed 's/\(+\)\(+\)/\1 \2/' file
Any ideas, please
Andy (2 Replies)
the sed command:
sed 's/^*//' file
does not work on HP-UX :-( but it works fine on Linux,
content of file:
<tab><tab>hello
output should be:
hello
Any ideas??
Thank you
Andy (8 Replies)
Basically it should identify what ever is in between /*< >*/ (tags) and replace dbname ending with (.) with the words in between the tags
i.e.
DELETE FROM /*<workDB>*/epd_test./*<multi>*//*<version>*/epd_tbl1 ALL; into
DELETE FROM... (4 Replies)
Hi,
I am not that good with reg exp and sed. But I was just looking at something the other day and came across a situation.
When I ran the below command:
echo "123 word" | sed 's/*/(&)/'
the op was:
(123) word
But when I ran:
echo "123 word" | sed 's/*/(&)/g'
the o/p was:
(123)... (4 Replies)
Dear all
i have the code which print 1 line of context before and after regexp, with line number
sed -n -e '/regexp/{=;x;1!p;g;$!N;p;D;}' -e h
the code work well but any one can tell me what each letter mean {=;x;1!p;g;$!N;p;D;}
also how i can print 2 line before and onle line after ... (2 Replies)
Dealing with Linux servers
script would be in korn or bash shell syntax
file is /etc/fstab
I want to insert something if regex is matched to all matched lines in the /etc/fstab file and print out entire /etc/fstab file with the changes
example
58.228.111.111:/my/file/system... (5 Replies)
Hi everyone, I would really appreciate any help I could get on the following topic.
I am not very familiar with reg expressions nor with sed, I just know the basic uses. What I am trying to do is the following: I have a huge text file where I would like to replace all occurnces of a certain... (13 Replies)
I need help with a regexp to find out the ip address which can possibly be present in a URL.
The URLs can be in any of the following form
<domain>?a=12345&d=somestring1
<domain>?c=10.10.10.100&d=somestring1
<domain>?a=12345&b=somestring1&c=10.1.2.4d=somestring2... (3 Replies)
G'day,
Here's a teaser for a sed guru, which I surely am not one, as even my
basic sed skills are rusted from years of not practising ... lol
Ok ... we have a string of digits such as:
632413741610252847552619172459483022433027602515212950543016701812771409213148672112
we want it split... (9 Replies)
OFF 00280456 - 2014|1|2020_STATUS|GROUP_NAME|SUBGROUP_NAME|CLASS_NAME|GROUP_ID|SUBGROUP_ID
I have above header in file. I need to replace 2020_STATUS with STATUS.
2020_STATUS is not always same but the column name will have STATUS all of the time. For instance column name might be 2019_STATUS... (1 Reply)
Discussion started by: jmadhams
1 Replies
LEARN ABOUT DEBIAN
trim
textutil::trim(3tcl) Text and string utilities, macro processing textutil::trim(3tcl)__________________________________________________________________________________________________________________________________________________NAME
textutil::trim - Procedures to trim strings
SYNOPSIS
package require Tcl 8.2
package require textutil::trim ?0.7?
::textutil::trim::trim string ?regexp?
::textutil::trim::trimleft string ?regexp?
::textutil::trim::trimright string ?regexp?
::textutil::trim::trimPrefix string prefix
::textutil::trim::trimEmptyHeading string
_________________________________________________________________DESCRIPTION
The package textutil::trim provides commands that trim strings using arbitrary regular expressions.
The complete set of procedures is described below.
::textutil::trim::trim string ?regexp?
Remove in string any leading and trailing substring according to the regular expression regexp and return the result as a new
string. This is done for all lines in the string, that is any substring between 2 newline chars, or between the beginning of the
string and a newline, or between a newline and the end of the string, or, if the string contain no newline, between the beginning
and the end of the string. The regular expression regexp defaults to "[ \t]+".
::textutil::trim::trimleft string ?regexp?
Remove in string any leading substring according to the regular expression regexp and return the result as a new string. This apply
on any line in the string, that is any substring between 2 newline chars, or between the beginning of the string and a newline, or
between a newline and the end of the string, or, if the string contain no newline, between the beginning and the end of the string.
The regular expression regexp defaults to "[ \t]+".
::textutil::trim::trimright string ?regexp?
Remove in string any trailing substring according to the regular expression regexp and return the result as a new string. This apply
on any line in the string, that is any substring between 2 newline chars, or between the beginning of the string and a newline, or
between a newline and the end of the string, or, if the string contain no newline, between the beginning and the end of the string.
The regular expression regexp defaults to "[ \t]+".
::textutil::trim::trimPrefix string prefix
Removes the prefix from the beginning of string and returns the result. The string is left unchanged if it doesn't have prefix at
its beginning.
::textutil::trim::trimEmptyHeading string
Looks for empty lines (including lines consisting of only whitespace) at the beginning of the string and removes it. The modified
string is returned as the result of the command.
BUGS, IDEAS, FEEDBACK
This document, and the package it describes, will undoubtedly contain bugs and other problems. Please report such in the category textutil
of the Tcllib SF Trackers [http://sourceforge.net/tracker/?group_id=12883]. Please also report any ideas for enhancements you may have for
either package and/or documentation.
SEE ALSO regexp(3tcl), split(3tcl), string(3tcl)KEYWORDS
prefix, regular expression, string, trimming
CATEGORY
Text processing
textutil 0.7 textutil::trim(3tcl)