1linux proc: this file is a symlink to the binary which has been executed - proc/<pid>/[?],exe,linux_proc
 2# linux proc: ,version,linux_proc
 3# linux proc: ,modules,linux_proc
 4# linux proc: ,loadavg,linux_proc
 5# linux proc: ,meminfo,linux_proc
 6# linux proc: ,cpuinfo,linux_proc
 7# linux proc: proc/<pid>/[?],cmdline,linux_proc
 8# linux proc: proc/<pid>/[?],environ,linux_proc
 9# linux proc: proc/<pid>/[?],fd,linux_proc
10# linux proc: proc/<pid>/[?],cwd,linux_proc
11# linux proc: proc/<pid>/?,root,linux_proc