[Top][All Lists]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Help help missing m option in synopsis

From: Chris F.A. Johnson
Subject: Help help missing m option in synopsis
Date: Fri, 29 May 2009 18:01:23 -0400 (EDT)
User-agent: Alpine 2.00 (LMD 1167 2008-08-23)

    The synopsis for the help builtin is missing the -m option:

        help: help [-ds] [pattern ...]

    Also, the PATTERN is not a pattern in the usual sense, it the
    beginning of a command:

$ help -d c
caller - Return the context of the current subroutine call.
case - Execute commands based on pattern matching.
cd - Change the shell working directory.
command - Execute a simple command or display information about commands.
compgen - Display possible completions depending on the options.
complete - Specify how arguments are to be completed by Readline.
compopt - Modify or display completion options.
continue - Resume for, while, or until loops.
coproc - Create a coprocess named NAME.

   As a result, it is not possible to have help print just the help
   for time or read, for example, they always include times,
   readarray, and readonly:

$ help -d time read
time - Report time consumed by pipeline's execution.
times - Display process times.
read - Read a line from the standard input and split it into fields.
readarray - Read lines from a file into an array variable.
readonly - Mark shell variables as unchangeable.

   Chris F.A. Johnson, webmaster         <http://woodbine-gerrard.com>
   Shell Scripting Recipes: A Problem-Solution Approach (2005, Apress)

reply via email to

[Prev in Thread] Current Thread [Next in Thread]