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PHP: system - Manual (3227 words) |
 | The system() call also tries to automatically flush the web server's output buffer after each line of output if PHP is running as a server module. |
| If you are going to allow data coming from user input to be passed to this function, then you should be using escapeshellarg() or escapeshellcmd() to make sure that users cannot trick the system into executing arbitrary commands. |
| We were using system() to call a Cocoa command-line binary from PHP using Mac OS X. The Cocoa binary was simply not working -- no error message, no logging, nothing, it would just die within moments of launching from the system() function and we'd get no results. |
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System (Java 2 Platform SE 5.0) (2366 words) |
| Note that while the unit of time of the return value is a millisecond, the granularity of the value depends on the underlying operating system and may be larger. |
| Multiple paths in a system property value are separated by the path separator character of the platform. |
| System properties and environment variables are both conceptually mappings between names and values. |
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