notes

search_within_a_man_page

<code>
, Just hit /, and type your search pattern.
, 
, Patterns can be regular expressions, for example, you could search for the word DQoptionDQ by typing
, 
, /Ooption
, Or find all of the long arguments with
, 
, /(--)a-Z
, To cancel the search, hit Ctrl+C.
, 
, Some useful quantification operators are:
, 
, ?    for zero or one of the preceding expression
, *    for zero or more of the preceding expression
, +    for one or more of the preceding expression
, And expressions can be DQgroupedDQ with parentheses, as in (--)+ (for two or more dashes).
, 
, a-Z is a sequence (others include 0-9, a-z and so on), they can be combined, as in a-Z0-9. You can also invert expressions with the ^ operator, e.g. (--)^a-Z+ for all long arguments that start with anything other than a letter.
, 
, Another useful operation is Union (|), as in color|colour, which finds every occurrence of either color or colour (this is sometimes called boolean OR).
, 
, To jump through the results, press N (forwards) and Shift+N (backwards).
, 
, There is also a way to search across all manpages:
, 
, man -K DQHello WorldDQ
, The man program will open the first match, and after you close it with q, offer you to
, 
, view the next one (Return)
, skip the current one (Ctrl+D)
, or exit (Ctrl+C).
, </code>