Uruchomienie, wykonanie: lockfile [options] filenames
Jak działa LOCKFILE, co robi LOCKFILE: Create semaphore file(s), used to limit access to a file. When lockfile fails to create some of the specified files, it pauses for eight seconds and retries the last one on which it failed. The command processes flags as they are encountered (i.e., a flag that is specified after a file will not affect that file). This command is most often used by scripts and applications as a way to avoid multiple users changing the same file at once
Dostępne opcje, wywołanie LOCKFILE: Number of seconds lockfile waits before retrying after a failed creation attempt. Default is 8. Invert return value. Useful in shell scripts. Time (in seconds) after a lockfile was last modified at which it will be removed by force. See also -s. If the permissions on the system mail spool directory allow it or if lockfile is suitably setgid, lockfile can lock and unlock your system mailbox with the options -ml and -mu, respectively. Stop trying to create files after this many retries. The default is -1 (never stop trying). When giving up, remove all created files. After a lockfile has been removed by force (see -l), a suspension of 16 seconds takes place by default. (This is intended to prevent the inadvertent immediate removal of any lockfile newly created by another program.) Use -s to change the default suspend time.
- Co znaczy :
- Definicja Consult /var/run/utmp for user's login name. If found, print it; otherwise, exit with an error message co znaczy.
- Co znaczy :
- Definicja of filenames and print matches. Matches include all files that contain pattern unless pattern includes metacharacters, in which case locate requires an exact match. *, ?, [, and ] are treated krzyżówka.
- Co znaczy :
- Definicja printed. If no files are given, accept standard input. We document the CUPS printing system here; the older LPRng and BSD systems will vary slightly. CUPS lpr, for example, does not accept the co to jest.
- Co znaczy :
- Definicja administration command. Set up and control loop devices. Attach a loop device to a regular file or block device, detach a loop device, or query a loop device. A loop device can be used to mount an słownik.
- Co znaczy :
- Definicja Display a list of recent bad login attempts (from the /var/log/btmp file). Accepts the same option flags and arguments as last czym jest.
Użycie LOCKFILE zastosowanie komendy na linii poleceńw Słownik L .
