Significance of " /proc/<pid>/root"

Adel BENZARTI adelbenzarti at
Sun Sep 15 15:28:37 EDT 2013

/proc/<pid>/root is a link for the root filesystem. This link helps when using chroot.

 From: Arun M Kumar <arunkr.linux at>
To: Kernel Newbies Mailing List <kernelnewbies at> 
Sent: Sunday, September 15, 2013 8:03 PM
Subject: Significance of   " /proc/<pid>/root"

What is the significance of the directory named root inside /proc/<pid> ?

arunkumar at arun-ThinkPad-Edge-E530:/proc/2543/root$ ls

bin   cdrom  etc   initrd.img      lib         media  opt   root 
sbin     srv  tmp  var      vmlinuz.old
boot  dev    home  initrd.img.old  lost+found  mnt    proc  run selinux  
sys  usr  vmlinuz

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