ulimit -a

Ubuntu 20.04 LTS ulimit default values:

ulimit -a
time(seconds)        unlimited
file(blocks)         unlimited
data(kbytes)         unlimited
stack(kbytes)        8192
coredump(blocks)     0
memory(kbytes)       unlimited
locked memory(kbytes) 65536
process              15638
nofiles              1024
vmemory(kbytes)      unlimited
locks                unlimited
rtprio               0

See also

• ulimit, -a, -Hn