default
The default value for the option. For an option with argument it can be anything; for an option with no argument: it must be yes or no.
... ommand line are checked: if one is not executable an error message is printed on stderr. Returns false if a program can't be found, true otherwise.
mbfl_program_fin... ble to test the availability of a program, so we can try to locate an alternative or terminate the process under the sc... and then exit.
Catching signals
MBFL provides an interface to the trap builtin that allows the execution of more than one function when a signal is received; this may
f [ "$a" -ne "$b" ]</code>
----
-gt
is greater than
<code> if [ "$a" -gt "$b" ]</code>
----
-ge
is greater than or equal to
<code>if [ "$a" -ge "$b" ]</code>
----
-lt
is less than
<code>if [ "$a" -lt "$b" ]</code>
----
-le
is less than or equal to
<code>if [ "$a" -le "$b" ]</code>
--
