syntax error: no commands between `if' and `then'
syntax error: no commands between `(' and `)'
syntax error: `!' cannot be used as command name
syntax error: `;;' used outside `case'
syntax error: command missing before `&'
alias: --no-such-option: invalid option
Usage:  alias [-gp] [name[=value]...]
alias: alias: no such alias
unalias: --no-such-option: invalid option
Usage:  unalias name[...]
        unalias -a
unalias: alias: no such alias
