$ xargs --show-limits
Your environment variables take up 2038 bytes
POSIX upper limit on argument length (this system): 2093066
POSIX smallest allowable upper limit on argument length (all systems): 4096
Maximum length of command we could actually use: 2091028
Size of command buffer we are actually using: 131072

##</code><code>##

$ yes | head -n 20910280 | xargs /bin/echo > /dev/null
$