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| Redak 5: |
Redak 5: |
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| | == Argumenti chmod naredbe == | | == Argumenti chmod naredbe == |
| − |
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| − | ----
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| − | The format of a symbolic mode is [ugoa...][[+-=][perms...]...], where perms is either
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| − | zero or more letters from the set rwxXst, or a single letter from the set ugo. Multi-
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| − | ple symbolic modes can be given, separated by commas.
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| | Simbolički oblik chmod naredbe je | | Simbolički oblik chmod naredbe je |
| Redak 18: |
Redak 13: |
| | </div> | | </div> |
| | {{Robelbox/close}} | | {{Robelbox/close}} |
| − |
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| − |
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| − | A combination of the letters ugoa controls which users’ access to the file will be
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| − | changed: the user who owns it (u), other users in the file’s group (g), other users not
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| − | in the file’s group (o), or all users (a). If none of these are given, the effect is
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| − | as if a were given, but bits that are set in the umask are not affected.
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| − |
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| − | The operator + causes the selected file mode bits to be added to the existing file mode
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| − | bits of each file; - causes them to be removed; and = causes them to be added and
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| − | causes unmentioned bits to be removed except that a directory’s unmentioned set user
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| − | and group ID bits are not affected.
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| − |
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| − | The letters rwxXst select file mode bits for the affected users: read (r), write (w),
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| − | execute (or search for directories) (x), execute/search only if the file is a directory
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| − | or already has execute permission for some user (X), set user or group ID on execution
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| − | (s), restricted deletion flag or sticky bit (t). Instead of one or more of these let-
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| − | ters, you can specify exactly one of the letters ugo: the permissions granted to the
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| − | user who owns the file (u), the permissions granted to other users who are members of
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| − | the file’s group (g), and the permissions granted to users that are in neither of the
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| − | two preceding categories (o).
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| | [[Kategorija:Sigurnost]] | | [[Kategorija:Sigurnost]] |
Inačica od 21:41, 25. prosinca 2008.
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Uvod
Chmod je standradna UNIX naredba kojom određujemo prava pristupa određenoj datoteci ili određenom direktoriju.Poznavajući korištenje naredbe chmod u mogučnosti smo konfigurirati vrlo siguran sustav, u kojem će se točno znati koji korisnici smiju čitati, koji pisati, a koji izvršavati određene datoteke i direktorije.Ukoliko su pravila pristupa loše postavljena vrlo je vjerojatno da aplikacije koje zahtjevaju odredena prava pristupa nece dobro raditi, a i sam sustav je vrlo nesiguran.Upravo iz tih razloga osnovna pravila čitanja,pisanja i izvršavanja inicijalno su postavljena u svakoj Linux distribuciji, a mi ih po zelji mozemo modificirati upravo sa chmod naredbom
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Argumenti chmod naredbe
Simbolički oblik chmod naredbe je
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Test title
chmod [ugoa...][[+-=][perms...]...]
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