/prod/<PID>/ns
디렉터리에서 현재 프로세스에서 사용하고 있는 네임스페이스의 고유 ID 확인 가능$ ls -al /proc/1/ns
total 0
dr-x--x--x 2 root root 0 Jan 31 03:47 .
dr-xr-xr-x 9 root root 0 Jan 24 14:46 ..
lrwxrwxrwx 1 root root 0 Jan 31 03:47 cgroup -> 'cgroup:[4026531835]'
lrwxrwxrwx 1 root root 0 Jan 31 03:47 ipc -> 'ipc:[4026531839]'
lrwxrwxrwx 1 root root 0 Jan 31 03:47 mnt -> 'mnt:[4026531840]'
lrwxrwxrwx 1 root root 0 Jan 31 03:47 net -> 'net:[4026531993]'
lrwxrwxrwx 1 root root 0 Jan 31 03:47 pid -> 'pid:[4026531836]'
lrwxrwxrwx 1 root root 0 Jan 31 03:47 pid_for_children -> 'pid:[4026531836]'
lrwxrwxrwx 1 root root 0 Jan 31 03:47 user -> 'user:[4026531837]'
lrwxrwxrwx 1 root root 0 Jan 31 03:47 uts -> 'uts:[4026531838]'
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