$ curl cheat.sh/

 cheat.sheets:rev 
# rev
# Reverse a string

# Reverse a string
echo hello world | rev
# dlrow olleh

# Reverse and flip
echo hello world | rev | perl -Mopen=locale -Mutf8 -pe tr/a-z/ɐqɔpǝɟƃɥıɾʞlɯuodᕹɹsʇnʌʍxʎz/
# plɹoʍ ollǝɥ

 tldr:rev 
# rev
# Reverse a line of text.
# More information: <https://manned.org/rev>.

# Reverse the text string "hello":
echo "hello" | rev

# Reverse an entire file and print to `stdout`:
rev path/to/file

$

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