mixed File_Passwd_Custom::save ( 
    
   )
Apply changes and rewrite passwd file.
Returns TRUE on success, PEAR_Error on failure.
| Error Code | Summary | 
|---|---|
| FILE_PASSWD_E_DIR_NOT_CREATED | directory in which the passwd file should reside couldn't be created | 
| FILE_PASSWD_E_FILE_NOT_OPENED | passwd file couldn't be opened in write mode | 
| FILE_PASSWD_E_FILE_NOT_LOCKED | passwd file couldn't be locked exclusively | 
| FILE_PASSWD_E_FILE_NOT_UNLOCKED | passwd file couldn't be unlocked | 
| FILE_PASSWD_E_FILE_NOT_CLOSED | passwd file couldn't be closed | 
This function can not be called statically.