else - execute command if a condition is not met
Synopsis
if CONDITION; COMMANDS_TRUE ...; [else; COMMANDS_FALSE ...;] end
Description
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.
Example
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
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https://fishshell.com/docs/3.5/cmds/else.html