05-03-2019
To add: in regular expressions, a . (dot) has a special meaning as it stands for "any character" . In order to change the meaning to a literal dot, it can be escaped with a \ character (backslash) preceding the dot. The %-sign is not a special character here and therefore does not need to be escaped.
Last edited by Scrutinizer; 05-03-2019 at 01:27 AM..
This User Gave Thanks to Scrutinizer For This Post:
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
is it possible to escape the \ character in sed?
right now I'm trying to replace all occurances of \ with \\
sed \"s|test|test_replacement|g\" file1 > output; #this works fine
sed \"s|\\|\\\|g\" file1 > output; #this generates the following error:
sed: -e expression #1, char 17:... (1 Reply)
Discussion started by: gammaman
1 Replies
2. Shell Programming and Scripting
Hi,
For the following complex code ,
<!-- ... (2 Replies)
Discussion started by: fed.linuxgossip
2 Replies
3. Shell Programming and Scripting
Hi All,
How do i write in sed for the 6th and 7th field of etc/passwd file as it involves "/" character?
Does mine below is correct? It's incomplete script as i need help with syntax as i always getting may errors :(
Example of etc/passwd file:
blah:x:1055:600:blah... (6 Replies)
Discussion started by: c00kie88
6 Replies
4. Shell Programming and Scripting
Hi all,
I have a script which uses sed to replace one string with another. The problem is, the string to be matched, and its replacement are coming in as two command line arguments $1 and $2
$1 and $2 can be absolutely anything, but both should be treated purely as strings. My sed command... (7 Replies)
Discussion started by: mark007
7 Replies
5. Shell Programming and Scripting
Hello experts
I am trying to write a shell script which will add ' ' to a unix variable and then pass it to oracle for inserting to a table.
I am running the script as root and I have to do a su -c .
The problem is the character ' is not recognised inside sed even after adding escape... (1 Reply)
Discussion started by: pvedaa
1 Replies
6. Shell Programming and Scripting
Hello Everyone,
I need to read an encrypted password from the user and update that value in an xml file. I am trying to use "sed" for searching the appropriate tag and replacing this new value that get from the user. Since the encrypted password can contain special characters(like /,\,&,etc),... (4 Replies)
Discussion started by: majose
4 Replies
7. Shell Programming and Scripting
Need help in escaping special characters in sed command.
Here is the the string which i am trying to find a replace with
From :- REQUEST_TYPE=PIXEL&MSG_ID={//MESSAGE_ID}
To :- REQUEST_TYPE=PIXEL&MSG_ID= X_EDELIVERY_MESSAGE_ID & BATCH_ID= X_EDELIVERY_BATCH_ID
Here is the sed command i am... (2 Replies)
Discussion started by: aakishore
2 Replies
8. Shell Programming and Scripting
i have string as below
str=".<date>"
in which i need to replace < with /< , when i tried with sed , got the output.
--> echo $str | sed 's/</\\</g'
.\<date>
when i tried to assign it to a variable , i am not getting the same
--> a=`echo $str | sed 's/</\\</g'` ; echo $a... (4 Replies)
Discussion started by: expert
4 Replies
9. Shell Programming and Scripting
Friends,
In the file i am having more then 100 lines like,
File1 had the values like this:
#Example East.server_01=EAST.SERVER_01
East.server_01=EAST.SERVER_01
West.server_01=WEST.SERVER_01
File2 had the values like this:
#Example EAST.SERVER_01=http://yahoo.com... (3 Replies)
Discussion started by: jothi basu
3 Replies
10. Shell Programming and Scripting
Greetings!
I've run into this before; and am having a spot of trouble trying to figure out the way that Perl would prefer the following example syntax to be formed:#!/usr/bin/perl
use strict;
use warnings;
use diagnostics;
`sed -i 's/Hi Mom!\|Hi Dad!/Bye Everyone!/I' ./test.txt`;Perl... (5 Replies)
Discussion started by: LinQ
5 Replies
LEARN ABOUT DEBIAN
ch_lab
CH_LAB(1) BSD General Commands Manual CH_LAB(1)
NAME
ch_lab -- change/copy label files
SYNOPSIS
ch_lab [-S frame spacing] [-start time] [-end time] [-ext file extension] [-extract file] [-extend time] [-f sample frequency]
[-lf sample frequency] [-itype file type] [-key key file] [-lablist list of labels] [-length time] [-map map file]
[-name feature name] [-class class] [-o output file] [-otype file type] [-pad high | low] [-pos list of labels] [-q timestep]
[-range range] [-sed sed file] [fl shift time delta] [-style output stype] [-vocab vocab file] [-verify] [-nopath] [-base] [-combine]
[-divide] [-h] input files ...
DESCRIPTION
ch_lab copies from one or more input label files to an output label file, optionally performing various operations along the way.
The following option flags are recognized:
-h Print a summary of usage to standard output.
-S frame spacing
frame spacing of output
-start time
start time, in seconds, for label extraction
-end time
end time, in seconds, for label extraction
-ext file extension
filename extension to use for multiple output files
-extract file
extract a single file from a list of files
-extend time
extend track file by time seconds beyond label file
-f sample frequency
sample frequency of label file
-lf sample frequency
sample frequency for labels
-itype file type
type of input label file: esps htk ogi
-key key file
key label file
-lablist list
list of labels to be considered as blank
-length time
length of track produced, in seconds
-map map file
label mapping file
-name feature name
eg. Fo Phoneme
-class class
name of class defined in op file
-o output file
output file name
-otype file type
output file type: xmg, ascii, esps, htk
-pad high | low
pad with high or low values
-pos list
list of labels to be regarded as 'pos'
-q timestep
quantize label timings to nearst value
-range range
difference between high and low values
-sed sed file
perform regex editing using sed file
fl shift time delta
shift the times of the labels
-style output style
output style e.g. track
-vocab file
file containing list of words in vocabulary
-verify
check that only labels in vocab file are in label file
-nopath
ignore pathnames when searching label lists
-base
use base filenames for lists of label files
-combine
-divide
SEE ALSO
ch_wave(1) ch_track(1)
Edinburgh Speech Tools April 5, 2001 Edinburgh Speech Tools