a1an a1an - 2 months ago 12
Linux Question

How to list pipes used by a process with a bash command

Is there a way to list pipes used by a running linux process (e.g. given its pid or process name) and to determine their used capacity?

Something like:

lspipes -l -p pid


resulting in something like:

[rw] descriptor size name


where rw is the pipe end type and size is its used capacity

Or something similar

Answer

1) ls -l /proc/pid/fd

This will list the pipes

lr-x------ 1 prabagaran prabagaran 64 Sep  5 23:01 14 -> pipe:[57729]
l-wx------ 1 prabagaran prabagaran 64 Sep  5 23:01 15 -> pipe:[57728]
lr-x------ 1 prabagaran prabagaran 64 Sep  5 23:01 16 -> pipe:[57731]
lr-x------ 1 prabagaran prabagaran 64 Sep  5 23:01 17 -> pipe:[57730]

2) lsof | grep 57731

wineserve 3641 prabagaran   76w     FIFO        0,8       0t0   57731 pipe
winedevic 3651 prabagaran   16r     FIFO        0,8       0t0   57731 pipe

These are the pipe information related to the given process id.