Szóste_21
0 21 fiche michalesq
questão  |
resposta |
|||
|---|---|---|---|---|
|
How to add setuid?
|
chmod u+s test1
|
|||
|
How to add setgid with octo notation?
|
chmod 2500 test1
|
|||
|
How to add setuid with octo notation?
|
chmod 4500 test1
|
|||
|
How to secure file from being removed adding sticky bit?
|
chmod +t test1
|
|||
|
How to secure file from being removed adding sticky bit with octo notation?
|
chmod 1777 test1
|
|||
|
How to display umaks for the system?
|
umask
|
|||
|
Mask the write permissions for the "other" users, then touch file2
|
umask 002
|
|||
|
Mask write access for group members and the write for "other" permissions
|
umask 022
|
|||
|
Mask read and write permissions for the owner of a file
|
umask 600
|
|||
|
Mask read/write access for group for non-privileged users and other permissions and make these changes persistent
|
vim /etc/bashrc and vim /etc/profile // change first umask to 066 (not privileged users)
|
|||
|
What does it mean: if [$UID -gt 199 ] && ["`id -gn`" = "`id -un`" ]
|
If the user id > 199 and id for the user and group is equal then user is not privileged, else it is priviledged
|
|||
|
How to display manual of the application?
|
man passwd
|
|||
|
How to display 5th page of the manual?
|
man 5 passwd
|
|||
|
How to look for the "word" in the documentation
|
apropos word
|
|||
|
Loading manuals to the cache
|
mandb
|
|||
|
directories contain information about documentation
|
/usr/share/doc
|
|||
|
locate passwd
|
search everything in the system for passwd command
|
|||
|
Update information about the program
|
updatedb
|
|||
|
How to display full absolute path for the specific program
|
which passwd
|
|||
|
How to look on manual page descriptions for the program
|
whatis passwd
|
|||
|
How to show everything about the program
|
whereis passwd
|
|||
