fish --version (return code: 0)
fish, version 2.6.0
fish --help (return code: 0)
fishfish - the friendly interactive shell - [1mSynopsis[0m [1mfish[0m [OPTIONS] [-c command] [FILE [ARGUMENTS...]] [1mDescription[0m fish is a command-line shell written mainly with interactive use in mind. The full manual is available in HTML by using the help command from inside fish. The following options are available: · -c or --command=COMMANDS evaluate the specified commands instead of reading from the commandline · -d or --debug-level=DEBUG_LEVEL specify the verbosity level of fish. A higher number means higher verbosity. The default level is 1. · -i or --interactive specify that fish is to run in interactive mode · -l or --login specify that fish is to run as a login shell · -n or --no-execute do not execute any commands, only perform syntax checking · -p or --profile=PROFILE_FILE when fish exits, output timing information on all executed commands to the specified file · -v or --version display version and exit · -D or --debug-stack-frames=DEBUG_LEVEL specify how many stack frames to display when debug messages are written. The default is zero. A value of 3 or 4 is usually sufficient to gain insight into how a given debug call was reached but you can specify a value up to 128. The fish exit status is generally the exit status of the last foreground command. If fish is exiting because of a parse error, the exit status is 127.