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Search for file, give error if more than one file is found

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# 1  
Old 04-03-2012
Search for file, give error if more than one file is found
Want to write a function that prints an error when passed a list of file names. If the file list is empty, print error "no file found", if there are more than one file, print "error more than one file found"
# 2  
Old 04-03-2012
Code:
function testfiles
{
        if [ "$#" -ne 1 ]
        then
                echo "Incorrect argument" >&2
                return 1
        fi

        if [ ! -f "$1" ]
        then
                echo "$1 does not exist" >&2
                return 1
        fi

        return 0
}

testfiles /etc/passwd

testfiles /etc/slartibartfast

testfiles 1 2 3 4 5

This User Gave Thanks to Corona688 For This Post:
kristinu
# 3  
Old 04-03-2012
I might pass an empty string. What should I do in this case?
# 4  
Old 04-03-2012
Depends what you want it to do.
# 5  
Old 04-03-2012
I might pass an empty string. What should I do in this case?
Code:
iflBase=`ls -lrt *.base | awk 'BEGIN {ORS=" ";}; {print $NF}'`  testfiles $iflBase

Last edited by methyl; 04-03-2012 at 05:42 PM.. Reason: code tags
# 6  
Old 04-03-2012
I repeat: Depends what you want to do about an empty string.

What should it do about an empty string? error? default? other? what?
# 7  
Old 04-03-2012
Quote:
Originally Posted by Corona688
I repeat: Depends what you want to do about an empty string.

What should it do about an empty string? error? default? other? what?
error. If string is empty, it means that no file has been found, and specification of the file is mandatory. I got it. if [ $NF -eq 0 ]; then ... elif [ $NF -gt 1 ]; then ... fi
Last edited by kristinu; 04-04-2012 at 07:06 AM..
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