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Top Forums Shell Programming and Scripting Read the specified line number from file Post 302381463 by zaxxon on Friday 18th of December 2009 09:38:27 AM
Old 12-18-2009
You might want to check websites for sed tutorials etc. or get a good book about it like sed&awk from O'Reilly.

It means
  • 2 ____ when the address is line 2
  • !d ____ do not delete it - ie. it will be printed

The opposite would have been:
Code:
sed -n '2p' infile

Which have meant to not print out every line but only the address you want to process.
 

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XtInitialize(3) 					    XT COMPATIBILITY FUNCTIONS						   XtInitialize(3)

NAME
XtInitialize - initialize SYNTAX
Widget XtInitialize(String shell_name, String application_class, XrmOptionDescRec* options, Cardinal num_options, int* argc, char** argv); ARGUMENTS
shell_name Specifies the name of the created shell widget. application_class Specifies the class name of this application, which usually is the generic name for all instances of this application. options Specifies how to parse the command line for any application-specific resources. The options argument is passed as a parameter to XrmParseCommand. For further information, see Xlib - C Language X Interface. num_options Specifies the number of entries in the options list. argc Specifies a pointer to the number of command line parameters. argv Specifies the command line parameters. DESCRIPTION
XtInitialize calls XtToolkitInitialize followed by XtOpenDisplay with display_string NULL and application_name NULL, and finally calls XtAppCreateShell with application_name NULL, widget_class applicationShellWidgetClass, and the specified args and num_args and returns the created shell. The semantics of calling XtInitialize more than once are undefined. This routine has been replaced by XtAppInitialize. SEE ALSO
XtAppInitialize(3Xt) X Toolkit Intrinsics - C Language Interface Xlib - C Language X Interface X Version 11 libXt 1.0.7 XtInitialize(3)
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