With two capture groups and back-references one can insert a newline in the middle:
Here I used the standard backslash-newline to represent the newline.
I need to replace the line containing "STAGE_DB" with the line
"STAGE_DB $DB # database that contains the table being loaded ($workingDB)"
Here $DB is passed during the runtime.
How can I do this?
Thanks,
Kousikan (2 Replies)
Please help!
Input pattern, where ... could be any number of lines
struct A {
Blah1
Blah2
Blah3
...
} B;
output pattern
struct AB {
Blah1
Blah2
Blah3
...
};
I need help in extracting everything between { and }
if it would have been on a single line { \(.*\)} should have worked. (15 Replies)
I am searching a dhcpd.conf to find the hardware ethernet match, then once the match is found delete just the line above it. For example:
testmachine.example {
hardware ethernet 00:00:00:00:00:00;
fixed address 192.168.1.100;
next-server 192.168.1.101;
filename "linux-install/pxelinux.0";
}... (3 Replies)
the following range matching works great but i wish to add a blank line after each range result set... which i've tried and researched to no avail
MY INPUT DATA:
CURRENT CODE I'M USING:
sed -n '/*$/,/;/p' $INPUT_FILE
RESULTS I'M GETTING:
RESULT I looking to... (5 Replies)
New to sed...
Have a file foo.txt (below).
Need to replace text on 2 lines, but can only feed sed the first few characters of each line (all lines are unique).
So, in my example, I have put '$' in place of what I need to figure out how to feed the whole line.
What I have thus far:
sed -e... (6 Replies)
Hello,
I want to do a simple substitution using sed but I can't find a solution. Basically, from a Apache conf file, I would like to remove everything included between the <VirtualHost> and </VirtualHost> e.g
SSLMutex file:/var/run/ssl_mutex
<VirtualHost _default_:443>
# A lot of config that... (5 Replies)
Hi,
I want to match a line which exists in a file. I have written a test script similar to below -
The content of the file file.txt would be like this -
/usr/bin/1234.xcf
/usr/bin/3456.xcf
/usr/bin/7897.xcf
/usr/bin/2345.xcf
out=`sed -n '\/usr\/bin\/7897.xcf/p' file.txt 2>&1`... (3 Replies)
Hi How Are you?
I am doing fine!
I need to go now?
I will see you tomorrow!
Basically I need to replace the entire line containing "doing" with a blank line:
I need to the following output:
Hi How Are you?
I need to go now?
I will see you tomorrow!
Thanks in advance.... (1 Reply)
awk , sed Experts,
I want to remove first and last line after pattern match "vg" :
I am trying : # sed '1d;$d' works fine , but where the last line is not having vg entry it is deleting one line of data.
- So it should check for the pattern vg if present , then it should delete the line ,... (5 Replies)
textutil::trim(n) Text and string utilities, macro processing textutil::trim(n)
__________________________________________________________________________________________________________________________________________________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(n), split(n), string(n)
KEYWORDS
prefix, regular expression, string, trimming
CATEGORY
Text processing
textutil 0.7 textutil::trim(n)