PROC_PID(5) PROC_PID(5) (NAME) /proc/pid - (DESCRIPTION) /proc/[pid] . /proc/pid/ (PID) . /proc/pid . /proc/pid (UID) (GID) . << >> (dumpable) root:root . 4.11 root:root () ( UID 0 GID 0 ). 4.11 ( ) 0 ( ) /proc/pid ( ) . . <> : o prctl(2) PR_SET_DUMPABLE . o prctl(2) /proc/sys/fs/suid_dumpable . <> /proc/pid/* UID GID . UID GID . <> . /proc/pid/cmdline (zombie) . . : ('\0') . . execve(2) argv . PR_SET_MM_ARG_START prctl(2) . /proc/pid/cwd . : $ cd /proc/20/cwd; pwd -P ( pthread_exit(3)) . (readlink(2)) PTRACE_MODE_READ_FSCREDS ( ptrace(2) ). /proc/pid/environ execve(2) . ('\0') . : $ cat /proc/1/environ | tr '\000' '\n' ( putenv(3) environ(7)) . /proc/pid/exe 2.2 . /proc/pid/exe . ' (deleted)' . /proc/pid/fd/ (file descriptor) ( 0 stdin 1 stdout 2 stderr). type:[inode] ( socket:[2248868]) . inode ( epoll eventfd) anon_inode:file-type . /proc/pid/maps . mmap(2) . : address perms offset dev inode pathname 00400000-00452000 r-xp 00000000 08:02 173521 /usr/bin/dbus-daemon 00e03000-00e24000 rw-p 00000000 00:00 0 [heap] 7fffb2c0d000-7fffb2c2e000 rw-p 00000000 00:00 0 [stack] 7fffb2d48000-7fffb2d49000 r-xp 00000000 00:00 0 [vdso] (r= w= x= s= p=) inode ( [heap] [stack]). /proc/pid/mem open(2) read(2) lseek(2) . PTRACE_MODE_ATTACH_FSCREDS . /proc/pid/status . Name ( ) Umask ( ) State ( ) Tgid ( PID) Pid ( ) PPid ( ) Uid Gid ( ) VmSize ( ) VmRSS ( ) Threads ( ) Seccomp . /proc/self/ /proc /proc/pid . (SEE ALSO) ps(1) top(1) ptrace(2) proc(5) man-pages PROC_PID(5)