| ActiveTcl User Guide |

### Tcl >> Tcl C Procedures >> Operating System Interface

Operating System Interface
    Tcl_Access - check file permissions and other attributes
    Tcl_DetachPids - manage child processes in background
    Tcl_PutEnv - procedures to manipulate the environment
    Tcl_GetCwd - manipulate the current working directory
    Tcl_GetHostName - get the name of the local host
    Tcl_GetTime - get date and time
    Tcl_SignalId - Convert signal codes
    Tcl_TranslateFileName - convert file name to native form and replace tilde with home directory

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