| 1 | |
| 2 | |
| 3 | |
| 4 | UTMP(5) 1990 UTMP(5) |
| 5 | |
| 6 | |
| 7 | |
| 8 | N\bNA\bAM\bME\bE |
| 9 | utmp, wtmp - login records |
| 10 | |
| 11 | S\bSY\bYN\bNO\bOP\bPS\bSI\bIS\bS |
| 12 | #\b#i\bin\bnc\bcl\blu\bud\bde\be <\b<u\but\btm\bmp\bp.\b.h\bh>\b> |
| 13 | |
| 14 | D\bDE\bES\bSC\bCR\bRI\bIP\bPT\bTI\bIO\bON\bN |
| 15 | The _\bu_\bt_\bm_\bp file records information about who is currently |
| 16 | using the system. The file is a sequence of entries with |
| 17 | the following structure, as defined in the include file. |
| 18 | |
| 19 | #define UT_NAMESIZE 8 |
| 20 | #define UT_LINESIZE 8 |
| 21 | #define UT_HOSTSIZE 16 |
| 22 | struct utmp { |
| 23 | char ut_line[UT_NAMESIZE]; |
| 24 | char ut_name[UT_LINESIZE]; |
| 25 | char ut_host[UT_HOSTSIZE]; |
| 26 | time_t ut_time; |
| 27 | }; |
| 28 | |
| 29 | This structure gives the name of the special file associated |
| 30 | with the user's terminal, the user's login name, and the |
| 31 | time of the login in the form of _\bt_\bi_\bm_\be(3). |
| 32 | |
| 33 | The _\bw_\bt_\bm_\bp file records all logins and logouts. A null user |
| 34 | name indicates a logout on the associated terminal. Furth- |
| 35 | ermore, the terminal name `~' indicates that the system was |
| 36 | rebooted at the indicated time; in such cases the name will |
| 37 | be ``shutdown''. An adjacent pair of entries with terminal |
| 38 | names `|' and `{' indicate the system-maintained time just |
| 39 | before and just after a _\bd_\ba_\bt_\be command has changed the |
| 40 | system's idea of the time. The name for both entries will |
| 41 | be ``date''. |
| 42 | |
| 43 | _\bW_\bt_\bm_\bp is maintained by _\bl_\bo_\bg_\bi_\bn(1) and _\bi_\bn_\bi_\bt(8). Neither of |
| 44 | these programs creates the file, so if it is removed |
| 45 | record-keeping is turned off. It is summarized by _\bl_\ba_\bs_\bt(1) |
| 46 | and _\ba_\bc(8). |
| 47 | |
| 48 | F\bFI\bIL\bLE\bES\bS |
| 49 | /var/run/utmp |
| 50 | /var/log/wtmp |
| 51 | |
| 52 | S\bSE\bEE\bE A\bAL\bLS\bSO\bO |
| 53 | last(1), login(1), who(1), ac(8), init(8) |
| 54 | |
| 55 | |
| 56 | |
| 57 | |
| 58 | |
| 59 | |
| 60 | |
| 61 | |
| 62 | |
| 63 | Printed 7/27/90 June 1 |
| 64 | |
| 65 | |
| 66 | |