How to replace special characters?


 
Thread Tools Search this Thread
Top Forums UNIX for Advanced & Expert Users How to replace special characters?
# 1  
Old 04-21-2017
How to replace special characters?

Hi Team,

I have data like this.

Code:
|*|.5|*|0.2|*|A.B|*|

Would like to add zero (0) before the decimal point where there is no zero as

Code:
|*|0.5|*|0.2|*|A.B|*|

How to replace |*|. with |*|0.

I tried below command which didn't work

Code:
echo '|*|.5|*|0.2|*|A.B|*' | sed 's/\|\*\|\./\|\*\|0\./g'

Thanks...

Last edited by Corona688; 04-21-2017 at 04:47 PM..
# 2  
Old 04-21-2017
Code:
$ echo '|*|.5|*|0.2|*|A.B|*|' | sed 's/|\./|0\./'
|*|0.5|*|0.2|*|A.B|*|

# 3  
Old 04-21-2017
To keep the forums high quality for all users, please take the time to format your posts correctly.

First of all, use Code Tags when you post any code or data samples so others can easily read your code. You can easily do this by highlighting your code and then clicking on the # in the editing menu. (You can also type code tags [code] and [/code] by hand.)



Second, avoid adding color or different fonts and font size to your posts. Selective use of color to highlight a single word or phrase can be useful at times, but using color, in general, makes the forums harder to read, especially bright colors like red.

Third, be careful when you cut-and-paste, edit any odd characters and make sure all links are working property.

Thank You.

The UNIX and Linux Forums
# 4  
Old 04-21-2017
Why use sed?
Longhand using OSX 10.12.4, default bash terminal.
(Assumption bash is available.)
Interactive mode is a great way to test.
Code:
Last login: Fri Apr 21 22:35:25 on ttys000
AMIGA:amiga~> STRING='|*|.5|*|0.2|*|A.B|*|'
AMIGA:amiga~> PREFIX="|*|0"
AMIGA:amiga~> echo "$PREFIX${STRING:3}"
|*|0.5|*|0.2|*|A.B|*|
AMIGA:amiga~> _

This User Gave Thanks to wisecracker For This Post:
# 5  
Old 04-22-2017
Post#4 requires the match at the beginning of the string.
Post#2 does only one substitution and also does it for A.B.
The following requires a digit after the dot, and because it is part of the match must mark it in \( \) and put it back via a back-reference. Also it does the substitution globally.
Code:
echo '|*|.5|*|0.2|*|A.B|*|' | sed 's/|\(\.[0-9]\)/|0\1/g'

Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. UNIX for Beginners Questions & Answers

Replace Pattern with another that has Special Characters

Hello Team, Any help would be much appreciated for the below scenario: I have a sed command below where I am trying to replace the contents of 'old_pkey' variable with 'new_pkey' variable in a Soap request file (delete_request.txt). This works fine for regular string values, but this new_pkey... (8 Replies)
Discussion started by: ChicagoBlues
8 Replies

2. Shell Programming and Scripting

Help to replace the string with special characters

{"name":"alR_pl-ENVIRONMENT_192_168_211_123_sDK_PROVISION_7","description":"aLR_pl-ENVIRONMENT_192_168_211_123_sDK_PROVISION_7","json_class":"Chef::Role","default_attributes":{},"override_attributes":{"yoapp":{"jboss":"5.1.0","port":"2243","warname":"soap","datacenter":"alR","ip":"192.168.211.123","... (3 Replies)
Discussion started by: nikhil jain
3 Replies

3. Shell Programming and Scripting

Replace special characters with backslash and character

Hi, I have a string wherein i need to replace special characters with backslash and that character. Ex: If my string is a=qwerty123@!, then the new string should be a_new=qwerty123\@\!\, Thanks (3 Replies)
Discussion started by: temp_user
3 Replies

4. Shell Programming and Scripting

How to replace special characters?

Hi Unix Guru, I have an requirement for replace some specail characters in a file, my file came from mainframe. please see below example: when open it with vi 17896660|89059215|04/24/1998 00:00:00.000000| abc 123-453-1312^M<85>^M<85>|124557 if I run cat -v I got following:... (25 Replies)
Discussion started by: ken002
25 Replies

5. Shell Programming and Scripting

Replace special characters with Escape characters?

i need to replace the any special characters with escape characters like below. test!=123-> test\!\=123 !@#$%^&*()-= to be replaced by \!\@\#\$\%\^\&\*\(\)\-\= (8 Replies)
Discussion started by: laknar
8 Replies

6. Shell Programming and Scripting

Replace special characters

I have a line ending with special character and 0 The special character is the field separator for this line in VI mode the file will look like below, but while cat the special character wont display i know the hexa code for the special character ^_ is \x1f and ascii code is \0037, ... (0 Replies)
Discussion started by: ratheeshjulk
0 Replies

7. Solaris

How to replace special characters in vi?

Hi , I want to replace the special characters in the file. For eg: cat abc 1234/4455/acb 234/k/lll/ 234`fs`fd I want to replace / and ` with the letter a and the output should like below. How to achieve this. 1234a4455aacb 234akallla 234afsafd (2 Replies)
Discussion started by: rogerben
2 Replies

8. Shell Programming and Scripting

Using sed to replace special characters

Hi everyone I have file1 contains: '7832' ' 8765 6543 I want a sed command that will format as: '7832' , '8765' , '6543' I tried sed -e s/\'//g -e 's/^*//;s/*$//' file1 > file2 sed -e :a -e '$!N; s/\n/ /; ta' file2 which gives: 7832 8765 6543 I need some help to continue with... (5 Replies)
Discussion started by: nimo
5 Replies

9. UNIX for Dummies Questions & Answers

Find and replace special characters in a file

HI All I need a shell script ehich removes all special characters from file and converts the file to UTF-* format Specail characters to be removed must be configurable. strIllegal = @"?/><,:;""'{|\\+=-)(*&^%$#@!~`"; Please help me in getting this script as my scripting skilla are... (2 Replies)
Discussion started by: sujithchandra
2 Replies

10. UNIX for Dummies Questions & Answers

Replace Special characters in a file

Hi, I have a data like this in a file, 402003279034002000100147626030003300010000000000002000029000000 r^M^\MW^H I need to replace those special char to some other char like # or $ Is there any ways to do it... I tried commands tr,sed and many but it was not able to replace because... (1 Reply)
Discussion started by: solai
1 Replies
Login or Register to Ask a Question

Featured Tech Videos