[Overview][Constants][Types][Procedures and functions][Variables][Index] Reference for unit 'Unix' (#rtl)

fpSystem

Execute and feed command to system shell

Declaration

Source position: unix.pp line 86

function fpSystem(

  const Command: RawByteString

):cint;

Description

FpSystem invokes the bash shell (/bin/sh), and feeds it the command Command (using the -c option). The function then waits for the command to complete, and then returns the exit status of the command in wait(3) format, or 127 if it could not complete the FpFork or FpExecve calls. To convert the return value of fpsystem to the real return value use WEXITSTATUS().

Errors

Errors are reported in (fpget)ErrNo

See also

POpen

  

Pipe file to standard input/output of program

FpFork

  

Create child process

FpExecve

  

Execute process using environment

Example

program example56;

uses Unix;

{ Program to demonstrate the Shell function }

Var S : Longint;

begin
  Writeln ('Output of ls -l *.pp');
  S:=fpSystem('ls -l *.pp');
  Writeln ('Command exited with status : ',S);
end.

Documentation generated on: May 14 2021