Man page - proc_pid_exe(5)

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Manual

proc_pid_exe

NAME
DESCRIPTION
SEE ALSO

NAME

/proc/pid/exe - symbolic link to program pathname

DESCRIPTION

/proc/ pid /exe

Under Linux 2.2 and later, this file is a symbolic link containing the actual pathname of the executed command. This symbolic link can be dereferenced normally; attempting to open it will open the executable. You can even type /proc/ pid /exe to run another copy of the same executable that is being run by process pid . If the pathname has been unlinked, the symbolic link will contain the string ' (deleted)' appended to the original pathname. In a multithreaded process, the contents of this symbolic link are not available if the main thread has already terminated (typically by calling pthread_exit (3)).

Permission to dereference or read ( readlink (2)) this symbolic link is governed by a ptrace access mode PTRACE_MODE_READ_FSCREDS check; see ptrace (2).

Under Linux 2.0 and earlier, /proc/ pid /exe is a pointer to the binary which was executed, and appears as a symbolic link. A readlink (2) call on this file under Linux 2.0 returns a string in the format:

[device]:inode

For example, [0301]:1502 would be inode 1502 on device major 03 (IDE, MFM, etc. drives) minor 01 (first partition on the first drive).

find (1) with the -inum option can be used to locate the file.