AIXでは、実行ユーザーと所有者が異なる場合、other に read 権限がないと /prco/
$ su - oracle $ cp /usr/bin/cat /tmp/cat $ cp /usr/bin/cat /tmp/catr $ chmod o+r /tmp/catr $ ls -l /tmp/cat -rwxr-x--x 1 oracle dba 13086 Jul 10 12:22 /tmp/cat -rwxr-xr-x 1 oracle dba 13086 Jul 10 13:31 /tmp/catr $ su - user01 $ /tmp/cat & /tmp/catr & [2] + Suspended (tty input) /tmp/catr [1] - Suspended (tty input) /tmp/cat $ ps -f|grep cat user01 8716410 6815990 0 13:34:25 pts/1 0:00 /tmp/cat user01 8847430 6815990 0 13:34:25 pts/1 0:00 /tmp/catr $ procmap 8716410 Finished IPCS 8716410 : map : Permission Denied $ procmap 8847430 Finished IPCS 8847430 : /tmp/catr 10000000 12K read/exec catr 20000644 9K read/write catr d052d100 2K read/exec /usr/lib/libcrypt.a[shr.o] f06f5608 0K read/write /usr/lib/libcrypt.a[shr.o] d0118500 3925K read/exec /usr/lib/libc.a[shr.o] f0621390 845K read/write /usr/lib/libc.a[shr.o] Total 4796K