$ echo "${PATH}"
.:/home/ikegami/bin:/usr/local/bin:/usr/bin:/bin:/usr/bin/X11:/usr/games
$ echo '${PATH}'
${PATH}

##</code><code>##

BEGIN { $^I = ''; }
while (<>) {
    s+${SOURCE}/${SAMS}/++g;
    s+${SOURCE}/${SAMLIB}/++g;
    s+${SOURCE}/${SMCLIB}/+${SOURCE}/${KENO}/+g;
    if ( not m+^${SOURCE}/+ ) {
         s+${SOURCE}/+\$$\{OBJECT\}/+g;
         print
    }
}

##</code><code>##

BEGIN { $^I = ''; }
while (<>) {
    s+//++g;
    s+//++g;
    s+//+//+g;
    if ( not m+^/+ ) {
         s+/+\${OBJECT}/+g;
         print
    }
}