RunAndReport.sh and GenerateHtmlReport.pl

Say you want to execute several tasks (commands) in a row, and each one of them generates sizeable log out.
Or you want to run a complex makefile with lots of targets, and each one runs long build commands.

At the end, you normally get a huge text file with all log output together. It is then difficult
to tell at once which tasks or targets failed, and which portion of the log output belongs to each one of them.

If you run each command with the RunAndReport.sh wrapper, copies of the log outputs will be placed
into separate files. The log files have a header with the command and the environment variables
at execution time, and a footer with the elapsed time. That separation alone,
with the extra information, tends to help when troubleshooting.

Afterwards, you can use GenerateHtmlReport.pl to create a report table which neatly summarises
the succeeded (in green) or failed (in red) exit status of each task. You can then drill down
to the separate task log files.

In order to provide a quick overview, task results can be divided into groups, and execution reports
can be nested into subprojects.

Run Example.sh to create an example report file.

Note that the report generator (script GenerateHtmlReport.pl) usually runs faster if Perl module
'HTML::Escape' is installed. The corresponding package name in Ubuntu/Debian is 'libhtml-escape-perl'.
Alternatively, you can always install that module with Perl's CPAN.
If the module is not installed, you will get a performance warning.