shell編程測試文件類型
#!/bin/bash
#This script is used to test the file type.
#6/20/11
function usage()
{
echo "Error:Must have a parameter."
echo "Usage: "$0" filename"
exit 1
}
function test_file()
{
FILE_NAME=$1
if [ ! -e $FILE_NAME ]
then
echo "file no find."
return 1
fi
if [ -d $FILE_NAME ]
then
echo $FILE_NAME": Directory."
return 0
elif [ -c $FILE_NAME ]
then
echo $FILE_NAME": Character device file."
return 0
elif [ -L $FILE_NAME ]
then
echo $FILE_NAME": Link file."
return 0
elif [ -b $FILE_NAME ]
then
echo $FILE_NAME": Block device file."
return 0
elif [ -f $FILE_NAME ]
then
echo $FILE_NAME": Regular file."
return 0
else
echo $FILE_NAME": Unknown type."
return 1
fi
}
if [ $# = 0 ]
then
usage
exit 1
fi
if MESSAGE=`test_file $1`
then
echo $MESSAGE
exit 0
else
echo $MESSAGE
exit 1
fi
