Linux Administration Certification STUDY GUIDE
a process signal reference to SIGKILL, which involves a
sudokill -9 75 forced exit of the process when a graceful exit does not end
the process as intended. The process identifier is 75.
A systems administrator Bash
would most commonly find
which shell as the default on
Linux systems.
A linux user would like to test software in an isolated
Sandbox environment. A prerequisite is that any secure boundaries
should be managed by the file system. Which method
does the user decide to use?
arranges the lines within a file. -r: sorts fields in descending
order. By default, the fields are sorted in ascending order.
sort command By default, the sort comand arranges the lines
alphabetically in ascending order (A to Z) for text, and from
smallest to largest for numbers. For text, it sorts from Z to A
(reverse alphabetical).
Class A: 0-127
Class B: 128 - 191
Classes Class C: 192 - 223
, Class D: 224 - 239
Class E: 240 - 255
GZIP Command tool for compressing files using the DEFLATE compression algorithm
gzip -d decompresses a file that was compressed using the gzip command.
creates a new empty file or updates the timestamp on an
touch command
existing file. For example, the touch currentfile.txt command
updates time timestamp on the currentfile.txt
file that contains user password information. This includes
/etc/shadow the hash value of the actual password, the number of days
since a password was last changed, the password
expiration date, and more
, file that contains the username, userID, GroupID, a user's
/etc/passwd
home directory, the absolute path of the default shell, and
more
file allows for the setting of system-wide environment
/etc/profile
variables and startup programs for new user shells.
file that is useful for establishing system-wide functions and
/etc/bashrc
aliases for new user shells
updates the Git repository with any new changes, creating a
commit subcommand
snapshot of that repository.
used to manage branches or pointers to specific repository
branch subcommand
snapshots after committing changes.
uploads a local working copy of a repository to a remote
push subcommand
repository, such as a centralized repository
command will upload a local working copy of a repository to
pull subcommand
a remote repository, such as a centralized repository.
init daemon refers to a configuration file and initiates the processes listed in it.
used to test the throughput (amount of materials or items)
iperf command
passing between two networks.
A new user to the Linux /bin folder stores essential command-line utilities and binaries
operating system looks to
find where the command-
line utilities are saved to
a process signal reference to SIGKILL, which involves a
sudokill -9 75 forced exit of the process when a graceful exit does not end
the process as intended. The process identifier is 75.
A systems administrator Bash
would most commonly find
which shell as the default on
Linux systems.
A linux user would like to test software in an isolated
Sandbox environment. A prerequisite is that any secure boundaries
should be managed by the file system. Which method
does the user decide to use?
arranges the lines within a file. -r: sorts fields in descending
order. By default, the fields are sorted in ascending order.
sort command By default, the sort comand arranges the lines
alphabetically in ascending order (A to Z) for text, and from
smallest to largest for numbers. For text, it sorts from Z to A
(reverse alphabetical).
Class A: 0-127
Class B: 128 - 191
Classes Class C: 192 - 223
, Class D: 224 - 239
Class E: 240 - 255
GZIP Command tool for compressing files using the DEFLATE compression algorithm
gzip -d decompresses a file that was compressed using the gzip command.
creates a new empty file or updates the timestamp on an
touch command
existing file. For example, the touch currentfile.txt command
updates time timestamp on the currentfile.txt
file that contains user password information. This includes
/etc/shadow the hash value of the actual password, the number of days
since a password was last changed, the password
expiration date, and more
, file that contains the username, userID, GroupID, a user's
/etc/passwd
home directory, the absolute path of the default shell, and
more
file allows for the setting of system-wide environment
/etc/profile
variables and startup programs for new user shells.
file that is useful for establishing system-wide functions and
/etc/bashrc
aliases for new user shells
updates the Git repository with any new changes, creating a
commit subcommand
snapshot of that repository.
used to manage branches or pointers to specific repository
branch subcommand
snapshots after committing changes.
uploads a local working copy of a repository to a remote
push subcommand
repository, such as a centralized repository
command will upload a local working copy of a repository to
pull subcommand
a remote repository, such as a centralized repository.
init daemon refers to a configuration file and initiates the processes listed in it.
used to test the throughput (amount of materials or items)
iperf command
passing between two networks.
A new user to the Linux /bin folder stores essential command-line utilities and binaries
operating system looks to
find where the command-
line utilities are saved to
