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Top Forums UNIX for Dummies Questions & Answers [Solved] How to refer to input file in code? Post 302731227 by Don Cragun on Wednesday 14th of November 2012 01:32:18 PM
Old 11-14-2012
Quote:
Originally Posted by legato22
Thanks! Finally got the right search term. After a little more searching, fyi for posterity, i set the variables with:

DIR=`dirname $1`
INPUT=`basename $1`


I was having problems before too because I didn't realize that there could be no spaces when setting variables!
Works now, thanks again.

EDIT: Not working... sort of pissing me off. I did this the first time, and it returned the dirname and basename of the file the script was running on with $1, but now it won't anymore. dirname is empty and it just returns "usage:dirname path"

EDIT: And somehow it randomly works again.
As a wild guess, I'd say that the times it didn't work, you invoked your shell script with no operands. Smilie

In other words, yourscript filename should work, but yourscript will fail with errors similar to what you described above.
 

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BASENAME(1)						    BSD General Commands Manual 					       BASENAME(1)

NAME
basename, dirname -- return filename or directory portion of pathname SYNOPSIS
basename string [suffix] basename [-a] [-s suffix] string [...] dirname string DESCRIPTION
The basename utility deletes any prefix ending with the last slash '/' character present in string (after first stripping trailing slashes), and a suffix, if given. The suffix is not stripped if it is identical to the remaining characters in string. The resulting filename is written to the standard output. A non-existent suffix is ignored. If -a is specified, then every argument is treated as a string as if basename were invoked with just one argument. If -s is specified, then the suffix is taken as its argument, and all other arguments are treated as a string. The dirname utility deletes the filename portion, beginning with the last slash '/' character to the end of string (after first stripping trailing slashes), and writes the result to the standard output. EXAMPLES
The following line sets the shell variable FOO to /usr/bin. FOO=`dirname /usr/bin/trail` DIAGNOSTICS
The basename and dirname utilities exit 0 on success, and >0 if an error occurs. SEE ALSO
csh(1), sh(1) STANDARDS
The basename and dirname utilities are expected to be IEEE Std 1003.2 (``POSIX.2'') compatible. BSD
April 18, 1994 BSD
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