Shellスクリプトはftk関数を実現します。
#!/bin/sh
let key=0
function ftok() {
pathname=$1;
proj_id=$2;
str_st_ino=`stat --format='%i' "${pathname}" 2>/dev/null`;
str_st_dev=`stat --format='%d' "${pathname}" 2>/dev/null`;
if [ "x${str_st_ino}" = "x" -o "x${str_st_dev}" = "x" ] ; then
return 1;
fi
let st_ino=${str_st_ino}
let st_dev=${str_st_dev}
#
let key1=${st_ino}\&16#FFFF
let key2=${st_dev}\&16#FF
let key2=${key2}\<\<16
let key3=${proj_id}\&16#FF
let key3=${key3}\<\<24
let key=${key1}\|${key2}
let key=${key}\|${key3}
}
function echohelp(){
echo "ftok generator"
echo "Usage:ftok pathname projid"
exit 5
}
if [ $# -ne 2 ] ; then
echohelp
fi
sPathName=$1
let nProjectID=$2
if [ "${sPathName:0:1}" != "/" ] ; then
sPathName=${PWD}/${sPathName}
fi
if ! test -f ${sPathName} ; then
echo "No File Found![${sPathName}]"
exit 4
fi
ftok "${sPathName}" "${nProjectID}"
echo ${key}