Class luci.sys

Functions

call (...) Execute a given shell command and return the error code
dmesg () Retrieves the output of the "dmesg" command.
exec (command) Execute a given shell command and capture its standard output
getenv (var) Retrieve environment variables.
hostname (String) Get or set the current hostname.
httpget (url, stream, target) Returns the contents of a documented referred by an URL.
mounts () Retrieve information about currently mounted file systems.
reboot () Initiate a system reboot.
syslog () Retrieves the output of the "logread" command.
uniqueid (bytes) Generates a random id with specified length.
uptime () Returns the current system uptime stats.


Functions

call (...)
Execute a given shell command and return the error code

Parameters

  • ...: Command to call

Return value:

Error code of the command
dmesg ()
Retrieves the output of the "dmesg" command.

Return value:

String containing the current log buffer
exec (command)
Execute a given shell command and capture its standard output

Parameters

  • command: Command to call

Return value:

String containing the return the output of the command
getenv (var)
Retrieve environment variables. If no variable is given then a table containing the whole environment is returned otherwise this function returns the corresponding string value for the given name or nil if no such variable exists.

Parameters

  • var: Name of the environment variable to retrieve (optional)

Return values:

  1. String containing the value of the specified variable
  2. Table containing all variables if no variable name is given
hostname (String)
Get or set the current hostname.

Parameters

  • String: containing a new hostname to set (optional)

Return value:

String containing the system hostname
httpget (url, stream, target)
Returns the contents of a documented referred by an URL.

Parameters

  • url: The URL to retrieve
  • stream: Return a stream instead of a buffer
  • target: Directly write to target file name

Return value:

String containing the contents of given the URL
mounts ()
Retrieve information about currently mounted file systems.

Return value:

Table containing mount information
reboot ()
Initiate a system reboot.

Return value:

Return value of os.execute()
syslog ()
Retrieves the output of the "logread" command.

Return value:

String containing the current log buffer
uniqueid (bytes)
Generates a random id with specified length.

Parameters

  • bytes: Number of bytes for the unique id

Return value:

String containing hex encoded id
uptime ()
Returns the current system uptime stats.

Return value:

String containing total uptime in seconds

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