/bin/[[:alpha:][:alnum:]]* /bin/ls 0x2 0 /bin/[[:upper:]][[:alnum:]] /bin/ls 0x10 0 /bin/[[:opper:][:alnum:]]* /bin/ls 0x0 1 [[:alpha:][:alnum:]]*.c foo1.c 0x4 0 [[:upper:]]* FOO 0x0 0