head -10 /dev/urandom | sha512sum | cut -b 1-30
head -c 16 /dev/urandom | od -An -t x | tr -d ' '
head -c 10 /path/to/file
curl -Is https://yourdomain.com/ | head -1
du -hs /var/lib/* | sort --human-numeric-sort -rk1 | head -10
head -c 1G </dev/urandom >myfile
tail
tail -n +2
fallocate
cat
tac
more
less
mtail
echo
stdin
tr
column
paste
truncate
logrotate
xzcat
pv
progress
sort
ncat
virt-cat
awk
join
col
fold
tee
sponge
nfs-cat
journalctl, ccat, icat, EOF
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