Info Catalog wget: URL Format wget: Invoking wget: Basic Startup Options

wget: Option Syntax

 
 2.2 Option Syntax
 =================
 
 Since Wget uses GNU getopt to process command-line arguments, every
 option has a long form along with the short one.  Long options are more
 convenient to remember, but take time to type.  You may freely mix
 different option styles, or specify options after the command-line
 arguments.  Thus you may write:
 
      wget -r --tries=10 http://fly.srk.fer.hr/ -o log
 
    The space between the option accepting an argument and the argument
 may be omitted.  Instead of ‘-o log’ you can write ‘-olog’.
 
    You may put several options that do not require arguments together,
 like:
 
      wget -drc URL
 
    This is completely equivalent to:
 
      wget -d -r -c URL
 
    Since the options can be specified after the arguments, you may
 terminate them with ‘--’.  So the following will try to download URL
 ‘-x’, reporting failure to ‘log’:
 
      wget -o log -- -x
 
    The options that accept comma-separated lists all respect the
 convention that specifying an empty list clears its value.  This can be
 useful to clear the ‘.wgetrc’ settings.  For instance, if your ‘.wgetrc’
 sets ‘exclude_directories’ to ‘/cgi-bin’, the following example will
 first reset it, and then set it to exclude ‘/~nobody’ and ‘/~somebody’.
 You can also clear the lists in ‘.wgetrc’ (⇒Wgetrc Syntax).
 
      wget -X "" -X /~nobody,/~somebody
 
    Most options that do not accept arguments are “boolean” options, so
 named because their state can be captured with a yes-or-no (“boolean”)
 variable.  For example, ‘--follow-ftp’ tells Wget to follow FTP links
 from HTML files and, on the other hand, ‘--no-glob’ tells it not to
 perform file globbing on FTP URLs.  A boolean option is either
 “affirmative” or “negative” (beginning with ‘--no’).  All such options
 share several properties.
 
    Unless stated otherwise, it is assumed that the default behavior is
 the opposite of what the option accomplishes.  For example, the
 documented existence of ‘--follow-ftp’ assumes that the default is to
 _not_ follow FTP links from HTML pages.
 
    Affirmative options can be negated by prepending the ‘--no-’ to the
 option name; negative options can be negated by omitting the ‘--no-’
 prefix.  This might seem superfluous—if the default for an affirmative
 option is to not do something, then why provide a way to explicitly turn
 it off?  But the startup file may in fact change the default.  For
 instance, using ‘follow_ftp = on’ in ‘.wgetrc’ makes Wget _follow_ FTP
 links by default, and using ‘--no-follow-ftp’ is the only way to restore
 the factory default from the command line.
 

Info Catalog wget: URL Format wget: Invoking wget: Basic Startup Options