What does the underscore do in this part of code can you explain Michael?
Code:
\([0-9][^_]*\)
thanks in advance
[0-9] - matches a number
[^_]* - matches anything except an uderscore
So from the line echo 'activemq-cpp-library-3.0.1-1_WR3.0bg.armv6jel_vfp'
first it matches the number, here 3 and followed by anything until underscore i.e .0.1-1 Hence final ouput as 3.0.1-1
This User Gave Thanks to michaelrozar17 For This Post:
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# !/bin/sh
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Discussion started by: echo manolis
7 Replies
LEARN ABOUT NETBSD
underend
CURSES_UNDERSCORE(3) BSD Library Functions Manual CURSES_UNDERSCORE(3)NAME
curses_underscore, underscore, underend, wunderscore, wunderend -- curses underscore attribute manipulation routines
LIBRARY
Curses Library (libcurses, -lcurses)
SYNOPSIS
#include <curses.h>
int
underscore(void);
int
underend(void);
int
wunderscore(void);
int
wunderend(void);
DESCRIPTION
These functions manipulate the underscore attribute on stdscr or on the specified window.
The underscore() function turns on the underscore attribute on stdscr. The underend() function turns off the underscore attribute on stdscr.
The wunderscore() and wunderend() functions are equivalent to underscore() and underend(), respectively, excepting that the attribute is
manipulated on the window specified by win.
The underscore() and underend() functions are equivalent to wattron(A_UNDERLINE) and wattroff(A_UNDERLINE), respectively.
RETURN VALUES
These functions always return 1.
SEE ALSO curses_attributes(3), curses_standout(3)STANDARDS
The NetBSD Curses library complies with the X/Open Curses specification, part of the Single Unix Specification.
HISTORY
These functions first appeared in NetBSD 1.5.
BSD October 13, 2002 BSD