Network Information Services - Table 10

• ~$ filename
  executes the script named 'filename'. After the script is complete, control returns to the calling script. The query status is set to 'y' if the script was found.
• ~$$ filename
  same as ~$ above, except that the script is executed in the background, and there is no delay waiting for the script to complete.
• ~( n cstring
  opens a connection on stream number 'n' (1-9). The connection is defined by 'cstring', which is in the form of a TNOS 'connect' or 'telnet' command. The current connection stream is NOT changed by this command. This sets query status to 'y' if the connection is made, 'n' if not, for use with the "~y" and "~n" control lines. If the connection is NOT made, the Error variable will contain the reason.
• ~) n
  disconnects the connection on stream number 'n' (1-9). This sets query status to 'y' if the disconnect is made, 'n' if not, for use with the "~y" and "~n" control lines. If the disconnect is NOT made, the Error variable will contain the reason. If 'n' is the current stream, the stream is reset to stream 0, the user's stream.
• ~# n
  changes the current I/O stream to that of stream 'n' (1-9). Stream 0 is the user's interactive I/O stream.
• ~= n
  checks the state of I/O stream 'n' (1-9), and set the query status to 'y' if the connection is still valid, and 'n' if the connection is invalid or terminated.

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