I installed dateutils with
sudo apt install dateutils
on Ubuntu 18.04
The dateutils binaries were installed in /usr/bin with the following names.
/usr/bin/dateutils.strptime
/usr/bin/dateutils.dconv
/usr/bin/dateutils.dseq/
/usr/bin/dateutils.dsort
/usr/bin/dateutils.dgrep
/usr/bin/dateutils.dzone
/usr/bin/dateutils.dtest
/usr/bin/dateutils.ddiff
/usr/bin/dateutils.dadd
/usr/bin/dateutils.dround
The man and info pages worked and used the correct names.
I tried to look up the web page that the dateutils web page referenced to Ubuntu, but that gave an error saying two web pages with that URL were found.
I finally made symbolic links to the 'dateutils.' binary files to solve the problem.
I installed dateutils with sudo apt install dateutils on Ubuntu 18.04
The dateutils binaries were installed in /usr/bin with the following names. /usr/bin/dateutils.strptime /usr/bin/dateutils.dconv /usr/bin/dateutils.dseq/ /usr/bin/dateutils.dsort /usr/bin/dateutils.dgrep /usr/bin/dateutils.dzone /usr/bin/dateutils.dtest /usr/bin/dateutils.ddiff /usr/bin/dateutils.dadd /usr/bin/dateutils.dround
The man and info pages worked and used the correct names. I tried to look up the web page that the dateutils web page referenced to Ubuntu, but that gave an error saying two web pages with that URL were found. I finally made symbolic links to the 'dateutils.' binary files to solve the problem.