| system {base} | R Documentation |
Invoke a System Command
Description
system invokes the system command specified by command.
If intern is TRUE then popen is used to invoke the
command and the output collected, line by line, into an R string
vector which is returned as the value of system. If intern
is FALSE then the C function system is used to invoke
the command and the value returned by system is the exit
status of this function. This function provides users with
the ability to invoke system commands on whatever platform they
are using.
Usage
system(command, intern=FALSE)
Arguments
command |
the system command to be invoked, as a string. |
intern |
a logical, indicates whether to make the output of the command an R object. |
Examples
# list all files in the current directory
# using the -F flag
system("ls -F")
# t1 contains a vector of strings, each one
# representing a separate line of output from who
t1 <- system("who", TRUE)