$ curl cheat.sh/
 cheat:ulimit 
# Report all current limits
ulimit -a

# Unlimited file descriptors
ulimit -n unlimited

 tldr:ulimit 
# ulimit
# Get and set user limits.
# More information: <https://manned.org/ulimit>.

# Get the properties of all the user limits:
ulimit -a

# Get hard limit for the number of simultaneously opened files:
ulimit -H -n

# Get soft limit for the number of simultaneously opened files:
ulimit -S -n

# Set max per-user process limit:
ulimit -u 30

$
Follow @igor_chubin cheat.sh