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Full Discussion: How to figure out a if insensitive file path exists or not?
Top Forums Shell Programming and Scripting How to figure out a if insensitive file path exists or not? Post 303041651 by mohtashims on Saturday 30th of November 2019 02:52:56 PM
Old 11-30-2019
Quote:
Originally Posted by Scrutinizer
Ah so it is the other way around? The hostname is always lowercase, but the path may be uppercase?

Try something like:
Code:
cd $(ls -d "$(hostname)"* "$(hostname | tr '[[:lower:]]' '[[:upper:]]')"* 2>/dev/null)

The path and the hostname both may be either upper or lower and we are not certain of that

In such a case how will my ls command to the file still work whether a lower or upper case is encountered ?

--- Post updated at 04:31 PM ---

Quote:
Originally Posted by Scrutinizer
Ah so it is the other way around? The hostname is always lowercase, but the path may be uppercase?

Try something like:
Code:
cd $(ls -d "$(hostname)"* "$(hostname | tr '[[:lower:]]' '[[:upper:]]')"* 2>/dev/null)

Will back-ticks work instead of "$(" ?

--- Post updated at 04:52 PM ---

Quote:
Originally Posted by Scrutinizer
Ah so it is the other way around? The hostname is always lowercase, but the path may be uppercase?

Try something like:
Code:
cd $(ls -d "$(hostname)"* "$(hostname | tr '[[:lower:]]' '[[:upper:]]')"* 2>/dev/null)

Works !! Thank you Scrutinizer for precise answer !!
 

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LEARN ABOUT LINUX

toupper

TOUPPER(3)						     Linux Programmer's Manual							TOUPPER(3)

NAME

       toupper, tolower - convert letter to upper or lower case

SYNOPSIS

       #include <ctype.h>

       int toupper(int c);
       int tolower(int c);

DESCRIPTION

       toupper() converts the letter c to upper case, if possible.

       tolower() converts the letter c to lower case, if possible.

       If c is not an unsigned char value, or EOF, the behavior of these functions is undefined.

RETURN VALUE

       The value returned is that of the converted letter, or c if the conversion was not possible.

CONFORMING TO

       C89, C99, 4.3BSD.

BUGS

       The  details  of  what constitutes an uppercase or lowercase letter depend on the current locale.  For example, the default "C" locale does
       not know about umlauts, so no conversion is done for them.

       In some non-English locales, there are lowercase letters with no corresponding uppercase equivalent; the German sharp s is one example.

SEE ALSO

       isalpha(3), setlocale(3), towlower(3), towupper(3), locale(7)

COLOPHON

       This page is part of release 3.27 of the Linux man-pages project.  A description of the project, and information about reporting bugs,  can
       be found at http://www.kernel.org/doc/man-pages/.

GNU
								    1993-04-04								TOUPPER(3)
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