====== bash: Циклы в одну строку ======

while

<code bash>
while true; do ls; sleep 2; done

</code>

for

<code bash>
for i in 1 2 3; do mkdir ${i}; done

</code>

if

<code bash>
if [ "${asd}" = "true" ]; then echo "hellow world"; fi

</code>