projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 3922de1d C |
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 |