Environment variables

ss allows to change source of information using various environment variables:

• PROC_SLABINFO to override /proc/slabinfo
• PROC_NET_TCP to override /proc/net/tcp
• PROC_NET_UDP to override /proc/net/udp
• etc.

Variable PROC_ROOT allows to change root of all the /proc/ hierarchy.

Variable TCPDIAG_FILE prescribes to open a file instead of requesting kernel to dump information about TCP sockets.

This option is used mainly to investigate bug reports, when dumps of files usually found in /proc/ are recevied by e-mail.