Login or Register to Ask a Question and Join Our Community


Shell Programming and Scripting

Character replacement

Login to Discuss or Reply to this Discussion in Our Community

 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting Character replacement
# 1  
Old 09-03-2007
Character replacement
Hi,

I am working on a command that replaces some occurrences of quotation marks in file. The quotation mark cannot be the first or the last character in line and cannot be preceded or followed by a comma.

I am not an expert in regular expressions, but I managed to create the following command.

sed 's/\([^,]\)\"\([^,]\)/\1\"\"\2/g' file.txt

Can you please verify it or tell me how to do it better? Any help will be appreciated.

Regards,
Pit
# 2  
Old 09-04-2007
Hi,

Small update regarding my problem. Currently I need to match pattern from the last occurence of
Code:
","

or
Code:
,,"

till the end of line. For example matching on the following line:

Code:
"one","two","three",,"five",,"sev"e,n"

should return
Code:
sev"e,n

. I would like to use sed or awk, but any other solution will be fine. Can you please help me writing a proper regular expression?

Pit
# 3  
Old 09-06-2007
you could do within vi the global repleace

:g/c2/s//c5/g

this replaces everything with c2 to c5. you could some how work this into a script to do a larger directory if you do not feel like vi a file. not sure though
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Special character replacement

Hi Guys, I have a file which needs to be replaced with tab delimited AA§Orgin Name§Mapping based on prod_usa§§§§ BB§Date§2019-08-11 23:30:01§§§§ I am trying below code sed 's// /g' test.txt Expected AA|Orgin Name|Mapping based on prod_usa||| BB|Date|2019-08-11 23:30:01|||| (6 Replies)
Discussion started by: rohit_shinez
6 Replies

2. Shell Programming and Scripting

Trigger email from script if the Special Character replacement is successfull

Hello Gurus, I have a script developed... #!/bin/bash #--------------------------------------------------------------------- # This pScript will remove/replace the special characters fromfiles #--------------------------------------------------------------------- trxdate="`date... (1 Reply)
Discussion started by: nanduedi
1 Replies

3. Shell Programming and Scripting

sed - replacement file path with variable - Escaping / character

Hi,, I have the line below in a file: $!VarSet |LFDSFN1| = '"E:\APC\Trials\20140705_427_Prototype Trial\Data\T4_20140705_Trial_Cycle_Data_13_T_Norm.txt" "VERSION=100 FILEEXT=\"*.txt\" FILEDESC=\"General Text\" "+""+"TITLE{SEARCH=NONE NAME=\"New Dataset\" LINE=1I want to write a script to change... (2 Replies)
Discussion started by: carlr
2 Replies

4. UNIX for Dummies Questions & Answers

global search and replacement of a non-ascii character

Hi, I need to do a global search and replacement of a non-ascii character. Let me first give the background of my problem. Very frequently, I need to copy set of references from different sources. Typically, a reference would like this: Banumathy et al., 2002 G. Banumathy, V. Singh and U.... (1 Reply)
Discussion started by: effjay
1 Replies

5. Shell Programming and Scripting

read in a file character by character - replace any unknown ASCII characters with spa

Can someone help me to write a script / command to read in a file, character by character, replace any unknown ASCII characters with space. then write out the file to a new filename/ Thanks! (1 Reply)
Discussion started by: raghav525
1 Replies

6. Programming

python, character replacement

Hello, I need to do this in python but I'm just learning py and it's quite urgent. I have a script I created and need an interactive python script to modify part of a line. MY SCRIPT #ligand prep. Uses 'ind' prefix. The initial ligand must be ind.pdb. This #generates ind.pdbqt.... (0 Replies)
Discussion started by: gav2251
0 Replies

7. UNIX for Dummies Questions & Answers

banner character replacement

Can we able to replace the character # in banner command with some other characters. Can we able to blink the character in Kornshell (1 Reply)
Discussion started by: sivakumar.rj
1 Replies

8. Shell Programming and Scripting

Sed-Special character replacement

Hi I want to replace ./testsed.ksh with testsed.ksh ./ is to be removed scriptnm=`sed -e 's/\.///' $0 does not work Please help (3 Replies)
Discussion started by: usshell
3 Replies

9. Shell Programming and Scripting

KSH - Character Replacement

Hey all. Easy question. I have a (ksh) varaible x. It contains the following (for example): N557788 I want to replace the "N" with a "-". I've done this before but for the life of me I cannot remember how I did it. Thanks. mtw (2 Replies)
Discussion started by: mixxamike
2 Replies

10. Shell Programming and Scripting

Help needed in character replacement in Korn Shell

How do I replace a space " " character at a particular position in a line? e.g. I have a file below $ cat i2 111 002 A a 33 0011 B c 2222 003 C a I want all the 1st spaces to be replaced with forward slash "/" and the 3rd spaces to have 5 spaces to get the output below: 111/002... (8 Replies)
Discussion started by: stevefox
8 Replies
Login or Register to Ask a Question