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Top Forums UNIX for Beginners Questions & Answers Using awk to search case insensitive Post 303035183 by anbu23 on Thursday 16th of May 2019 06:20:44 AM
Old 05-16-2019
You are getting error since toupper() should be used inside awk. Why do you use toupper() ? (You are already fetching filenames in upper or lower case)
Quote:
for SQLOutFile in `ls $cur_dir *[Aa][Ww]*[Ss][Rr]*[Dd][Mm][Ll]*.lst`;
 

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TOUPPER(3)						   BSD Library Functions Manual 						TOUPPER(3)

NAME
toupper -- lower case to upper case letter conversion LIBRARY
Standard C Library (libc, -lc) SYNOPSIS
#include <ctype.h> int toupper(int c); DESCRIPTION
The toupper() function converts a lower-case letter to the corresponding upper-case letter. RETURN VALUES
If the argument is a lower-case letter, the toupper() function returns the corresponding upper-case letter if there is one; otherwise the argument is returned unchanged. SEE ALSO
ctype(3), isalnum(3), isalpha(3), isascii(3), iscntrl(3), isdigit(3), isgraph(3), islower(3), isprint(3), ispunct(3), isspace(3), isupper(3), isxdigit(3), stdio(3), toascii(3), ascii(7) STANDARDS
The toupper() function conforms to ANSI X3.159-1989 (``ANSI C89''). CAVEATS
The argument to toupper() must be EOF or representable as an unsigned char; otherwise, the behavior is undefined. See the CAVEATS section of ctype(3) for more details. BSD
April 17, 2008 BSD
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