Question

HOw to check whther a file has special characters

Asked by: she123

Hi,

In my file, there are special characters including any hidden characters which are non alpha-numeric characters and delimietr. If there are any other characters apart from alpha-numeric characters and delimiter, it shud note that the file is a bad file. I have tried this by using the below command but it didnt work. Here, I dont want to replace the characters, I just need to see whether the file has any special characters including any hidden charcters.

grep '/[^0-9a-zA-Z]/' abc.txt

Any help would be helpful...

Thanks.

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Asked On
2009-09-15 at 08:01:47ID24733165
Tags

UNIX SHELL

Topics

HP-UX Unix

,

KornShell (ksh)

,

Bourne-Again Shell (bash)

Participating Experts
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Points
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Answers

 

by: itkamarajPosted on 2009-09-15 at 08:05:25ID: 25335690

try this

http://www.experts-exchange.com/Programming/Languages/Scripting/Perl/Q_20306317.html?sfQueryTermInfo=1+charact+special+unix

tr(\x80-\xff)(letters of your choice to be a replacement)

                                              
1:

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by: itkamarajPosted on 2009-09-15 at 08:08:47ID: 25335730

 

by: itkamarajPosted on 2009-09-15 at 08:10:17ID: 25335752

This example would take the file myfile1 and strip all non printable characters and take that results to myfile2

tr -cd '\11\12\40-\176' < myfile1 > myfile2 

                                              
1:

Select allOpen in new window

 

by: she123Posted on 2009-09-15 at 08:41:35ID: 31628964

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