LogiView

Functions and Commands

Operating System Interface

     

For the process control and communication with the operating system the following functions and commands are available:

client_env {STR_VAR}= client_env ({STR_EXPR})
The function "client_env" returns the value of an environment variable of the client.
delete delete({STR_EXPR}) or
delete({STR_EXPR},{/CLIENT})

This command can be used to delete a file.
environment {STR_VAR}= environment ({STR_EXPR})
This function returns the value of an environment parameter of the client or server.
file_get file_get({STR_EXPR},{STR_EXPR},{"/BIN"|"/ASC"})
This function is used to copy a file from a client to the server.
file_put file_put({STR_EXPR},{STR_EXPR},{"/BIN"|"/ASC"})
This function is used to copy a file from the server to a client.
getenv {STR_VAR}= getenv({STR_EXPR})
This function returns a string with the value of an environment variable. If the environment variable is not set, an empty string is returned.
exists {LOG_VAR}= exists({STR_EXPR},{"r"|"w"|"x"}) or
{LOG_VAR}= exists({STR_EXPR},{"r"|"w"|"x"},{"/CLIENT"})

This function checks if the specified file exists with the corresponding access.
system system({STR_EXPR}) or
system({STR_EXPR},{INT_VAR})

This command forwards the command string to the operating system of the computer. If the function cannot be executed, an error code is set.