Remove all JUNK character from file.


 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting Remove all JUNK character from file.
# 1  
Old 01-30-2009
Remove all JUNK character from file.

Hi Team,

I have a file having size greater than 1 GB. What i want to do is to check if it contains any JUNK character (ie any special charater thats not on the key board stroke). This file has 532 column & seperated with ^~^.

I have found some solution from the file, but it is for a specific junk character not for all.

Can someone help me...
# 2  
Old 01-30-2009
check if this helps:
Code:
grep -v '[A-Za-z0-9]' filename

# 3  
Old 01-30-2009
Hi Yogesh,

No it is not working. In my file i have found one of the special character "§". But ur command is not showing it.
# 4  
Old 01-30-2009
He means:

grep '[^[:print:]]' filename

Last edited by otheus; 01-30-2009 at 06:39 AM.. Reason: carat in wrong position
# 5  
Old 01-30-2009
saves only ASCII

I typically use this:

Code:
sed -e 's/[^ -~]//g' file_in > file_out

This removes all junk characters. not all lines with junk --- just all junk characters.

To tell if a file has junk . .. .

Code:
grep -c '[^ -~]' file_in

Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

How to remove newline character if it is the only character in the entire file.?

I have a file which comes every day and the file data look's as below. Vi abc.txt a|b|c|d\n a|g|h|j\n Some times we receive the file with only a new line character in the file like vi abc.txt \n (8 Replies)
Discussion started by: rak Kundra
8 Replies

2. Emergency UNIX and Linux Support

Help in viewing the junk character

Hello All, I have issues in unix file when I loaded that to database and do select * from table where description like '%'+char(13)+'%' on it I am able to get records. I tried to view the file in unix it is all having blank character which I think is all non ascii which I am not able view.... (11 Replies)
Discussion started by: arunkumar_mca
11 Replies

3. Shell Programming and Scripting

Junk character appearing after downloading the file from windows server

Hello, Im downloading the file from windows server through FTP, the downloaded file is containing some junk character at very start of the file as below and causing my whole script is to fail, how to download without junk or how to remove these before processing it? ▒▒"nmdbfnmdsfsdf" ... (19 Replies)
Discussion started by: Riverstone
19 Replies

4. Shell Programming and Scripting

How to see junk character in file in.?

Hi I want to know how to see junk character in a file. i am not able to see junk character using vi or cat command. below is the junk char . which i see in host file 10.178.14.67▒▒▒ ac01sp02-vip actually it should be like this 10.178.14.67 ac01sp02-vip i am using secure CRT... (11 Replies)
Discussion started by: scriptor
11 Replies

5. Shell Programming and Scripting

Remove all junk characters from a text file

I am using flatfile, in that flat file we are getting the junk chars 1)I21001f<82>^Me<85>!h49 Service Charge 2) I21001f‚ e...!h49 Service Charge please tell me how to remove all junk chars in unix scripts. (1 Reply)
Discussion started by: Talari
1 Replies

6. Shell Programming and Scripting

removing of junk character

Dear ALL, How to remove junk charecter ^M from unix file i am using sun solaris unix. I already tried few commands :%s/^M//g :%s/r//g but it didnt helped me. Any help appriciated. Thanks Ripudaman Please view this code tag video for how to use code tags when posting code... (5 Replies)
Discussion started by: ripudaman.singh
5 Replies

7. Shell Programming and Scripting

Check Junk character in sql file

Hello, I have two .sql files which I transferred from Windows to Unix (Linux Enterprise Linux Server release 5.3).I want to ensure that these two files have no junk characters in them.How do I do it in the simplest possible way? Many thanks DJ (1 Reply)
Discussion started by: Digjoy83
1 Replies

8. Shell Programming and Scripting

Junk Character in file

Hi set filename "./GopiRun.sh" if } err] { writeLog "error in exec " writeLog $a } else { writeLog $a } The above code will execute a file GopiRun.sh,and will log the output of the exec to a file. The problem is the file has lot of junk character in it,how to avoid it. The... (2 Replies)
Discussion started by: nathgopi214
2 Replies

9. UNIX for Dummies Questions & Answers

How to remove junk (^Ò) character while FTPing

Hi All, I have been trying to FTP some data files from Windows directory to a UNIX server. The txt file in the windows contails the following data: "111~XYZ~1~Contact person’s phone number~COMMENTS~~~~" but the same line is appearing as "111~XYZ~1~Contact person^Òs phone number~COMMENTS~~~~"... (8 Replies)
Discussion started by: vkumbhakarna
8 Replies

10. UNIX for Advanced & Expert Users

Get rid of junk character in a file

I have a file with one of the following lines, when opened with vi 33560010686GPT£120600GBPGBP10082007DS In the above line, I want to get rid of the junk character before the £ (pound sysmbol). When I tried copying £ from windows and copy in unix vi, it prints as £ and I tried pattern replace... (2 Replies)
Discussion started by: nskworld
2 Replies
Login or Register to Ask a Question