$ curl cheat.sh/
 cheat:tail 
# To show the last 10 lines of <file>:
tail <file>

# To show the last <number> lines of <file>:
tail -n <number> <file>

# To show the last lines of <file> starting with <number>:
tail -n +<number> <file>

# To show the last <number> bytes of <file>:
tail -c <number> <file>

# To show the last 10 lines of <file> and to wait for <file> to grow:
tail -f <file>

 tldr:tail 
# tail
# Display the last part of a file.
# See also: `head`.
# More information: <https://www.gnu.org/software/coreutils/tail>.

# Show last 'count' lines in file:
tail --lines count path/to/file

# Print a file from a specific line number:
tail --lines +count path/to/file

# Print a specific count of bytes from the end of a given file:
tail --bytes count path/to/file

# Print the last lines of a given file and keep reading file until `Ctrl + C`:
tail --follow path/to/file

# Keep reading file until `Ctrl + C`, even if the file is inaccessible:
tail --retry --follow path/to/file

# Show last 'num' lines in 'file' and refresh every 'n' seconds:
tail --lines count --sleep-interval seconds --follow path/to/file

$
Follow @igor_chubin cheat.sh