else - execute command if a condition is not met¶
if CONDITION; COMMANDS_TRUE...; [else; COMMANDS_FALSE...;] end
if will execute the command
CONDITION. If the condition's exit status is 0, the commands
COMMANDS_TRUE will execute. If it is not 0 and
else is given,
COMMANDS_FALSE will be executed.
The following code tests whether a file
foo.txt exists as a regular file.
if test -f foo.txt echo foo.txt exists else echo foo.txt does not exist end