By John Strang, Tim O'Reilly, Linda Mui
Whereas termcap and terminfo aren't any longer as very important as they as soon as have been, a result of development of the X terminal marketplace and elevated standardization between ASCII terminals, dealing with varied terminal varieties can nonetheless be a headache for approach directors. The termcap and terminfo databases are UNIX's strategy to the trouble of assisting many terminals with out writing exact drivers for every terminal. Termcap (BSD) and terminfo (System V) describe the good points of thousands of terminals, including a library of exercises that permit courses to exploit these capabilities.This booklet files hundreds and hundreds of services and syntax for termcap and terminfo, writing and debugging terminal descriptions, and terminal initialization. Contents include:
* Terminal independence: the necessity for termcap and terminfo.
* examining termcap and terminfo entries.
* potential syntax.
* Initializing the terminal environment.
* Writing termcap and terminfo entries.
* changing among termcap and terminfo.
* designated descriptions of the capabilities.
* reveal dimensions and cursor movement.
* Initialization and reset.
* particular and identical terminals.
* many helpful appendices.
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Extra info for termcap & terminfo (3rd Edition)
De 230 Guest l ogin ok, access restrictions apply . ftp> Is 200 PORT command successful . 150 ASC II data connection for Ibin/ls (141 . 1 . 41 ,1 157) (0 bytes) . total 6 drwxrwxrwx 2 0 150 512 Jul 16 16:14 Incoming -rw-r--r-- 1 0 1 139 Aug 22 12:33 README drwxr-xr-x 2 0 150 512 May 10 09 : 51 bin drwxr-xr-x 2 0 150 512 May 10 09 : 54 dev drwxr-xr-x 5 0 150 512 Jun 20 15 : 36 pub drwxr-xr-x 3 0 150 512 May 10 09 : 52 usr 226 ASCII Transfer complete. ftp> get README 200 PORT command successful .
2 APC invocation XDR is normally used along with RPC. This machineindependent method of data representation is used to exchange data between computers with different processor architectures. ) The XDR description allows the definition of the XDR 35 Chapter 3 Networking portmap parameters of an RPC routine; then appropriate subroutines convert the parameters between the machine-independent format and each computer's own format. The invocation of these conversion routines and of the internal RPC routines can be automated with the program rpcgen.
Only these protocol commands are transferred. For a data connection in the transfer of files, a second TCP connection is established. The individual commands for the ftp program are available on the on-line reference manual page for ftp or from the help function within the ftp program, which is invoked by inputting ftp commands help. To log in on another computer with tel net, the user invokes the tel net program with a computer name or an IP address. This establishes a TCP connection to the tel net daemon of the specified computer.