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Top Forums UNIX for Dummies Questions & Answers To get the invalid characters from a file Post 302747347 by schandru on Friday 21st of December 2012 06:04:20 AM
Old 12-21-2012
Hi,
Today i faced a problem in which the file at Unix had the characters like � and it caused the file processing failure at downstream end which is Mainframe. and it somehow identified by the Mainframe and notified to me, so i removed the above mentioned by going to the particular line and removed the characters and it got processed successfully.

Could you please help me to find these characters like non-standard characters in a file?

Hope now this makes sense and clear..!

Chandru.
 

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LOOK(1) 						    BSD General Commands Manual 						   LOOK(1)

NAME
look -- display lines beginning with a given string SYNOPSIS
look [-df] [-t termchar] string [file] DESCRIPTION
The look utility displays any lines in file which contain string as a prefix. As look performs a binary search, the lines in file must be sorted. If file is not specified, the file /usr/share/dict/words is used, only alphanumeric characters are compared and the case of alphabetic char- acters is ignored. Options: -d Dictionary character set and order, i.e. only alphanumeric characters are compared. -f Ignore the case of alphabetic characters. -t Specify a string termination character, i.e. only the characters in string up to and including the first occurrence of termchar are compared. The look utility exits 0 if one or more lines were found and displayed, 1 if no lines were found, and >1 if an error occurred. FILES
/usr/share/dict/words the dictionary COMPATIBILITY
The original manual page stated that tabs and blank characters participated in comparisons when the -d option was specified. This was incor- rect and the current man page matches the historic implementation. SEE ALSO
grep(1), sort(1) HISTORY
look appeared in Version 7 AT&T UNIX. BSD
June 14, 1993 BSD
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