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Full Discussion: Need help interpreting a function
Top Forums Shell Programming and Scripting Need help interpreting a function Post 302386396 by zaxxon on Tuesday 12th of January 2010 10:41:38 AM
Old 01-12-2010
Code:
    res=-1

Assigning a value to a variable; -1 as default return code for this function if there is no parameter given when calling the function.

Code:
    if [ ! -z "$1" ]; then

...if the 1st positional parameter of the function find_lines() is not empty then...

Code:
        grep -i "$@" $FILENAME

... grep the file(name) contained in $FILENAME by ignoring case (-i) with all parameters given ($@) to the function.

Code:
        res=$?

The return code of the grep stored to res.

Code:
    fi
    return $res

Ending the if/then/fi and returning the value of res as return code of the function.
 

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LEARN ABOUT SUNOS

wscrl

scrl(3XCURSES)						  X/Open Curses Library Functions					    scrl(3XCURSES)

NAME

       scrl, scroll, wscrl - scroll a window

SYNOPSIS

       cc [ flag... ] file... -I /usr/xpg4/include -L /usr/xpg4/lib 
       -R /usr/xpg4/lib -lcurses [ library... ]

       c89 [ flag... ] file... -lcurses [ library... ]

       #include <curses.h>

       int scrl(int n);

       int scroll(WINDOW *win);

       int wscrl(WINDOW *win, int n);

PARAMETERS

       n		       number and direction of lines to scroll

       win		       pointer to the window in which to scroll

DESCRIPTION

       The scroll() function scrolls the window win up one line.  The current cursor position is not changed.

       The  scrl() and wscrl() functions scroll the window stdscr or win up or down n lines, where n is a positive (scroll up) or negative (scroll
       down) integer.

       The scrollok(3XCURSES) function must be enabled for these functions to work.

RETURN VALUES

       On success, these functions return OK. Otherwise, they return ERR.

ERRORS

       None.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Standard			   |
       +-----------------------------+-----------------------------+
       |MT-Level		     |Unsafe			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       clearok(3XCURSES), libcurses(3XCURSES), attributes(5), standards(5)

SunOS 5.10							    5 Jun 2002							    scrl(3XCURSES)
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