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70 Cards in this Set
- Front
- Back
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The interpreter that executes commands typed as strings. |
Shell |
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The visual cue that indicates an interactive shell is waiting for the user to type a command. |
Prompt |
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The name of a program to run. |
Command |
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The part of the command line that adjusts the behavior of a command. |
Option |
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The part of the command line that specifies the target that the command should operate on. |
Argument |
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The hardware display and keyboard used to interact with a system. |
Physical Console |
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One of multiple logical consoles that can each support an independent login session. |
Virtual Console |
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An interface that provides a display for output and a keyboard for input to a shell session. |
Terminal |
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Jump to the beginning of the previous word on the command line. |
Ctrl+Left Arrow |
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Separate commands on the same line. Ctrl+Left |
; |
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Clear from the cursor to the end of the command line. |
Ctrl+k |
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Re-execute a recent command by matching the command name. |
!string |
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Shortcut used to complete commands, filenames, and options. |
Tab |
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Re-execute a specific command in the history list. |
!number |
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Jump to the beginning for the command line. |
Ctrl+a |
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Display the list of previous commands. |
history |
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Copy the last argument of previous commands. |
Esc+. |
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This is directory contains static, persistent system configuration data |
/etc |
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This is the system's root directory. |
/ |
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User home directories are located under this directory. |
/home |
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This is the root account's home directory. |
/root |
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This directory contains dynamic configuration data, such as FTP and websites. |
/var |
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Regular user commands and utilities are located here. |
/usr/bin |
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System administration binaries, for root use, are here. |
/usr/sbin |
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Temporary files are stored here. |
/tmp |
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Contains dynamic, non-persistent application runtime data. |
/run |
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Contains installed software programs and libraries. |
/usr |
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List the current user's home directory (long format) in simplest syntax, when it is not the current location. |
Is -I (ñ) |
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Return to the current user's home directory. |
cd |
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Determine the absolute path name of the current location. |
pwd |
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Return to the most previous working directory. |
cd - |
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Move up two levels from the current location. |
cd../.. |
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List the current location (long format) with hidden files. |
ls -al |
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Move to the binaries location, from any current location. |
cd /bin |
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Move up to the parent of the current location. |
cd .. |
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Move to the binaries location, from the root directory. |
cd bin |
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Only filenames beginning with "b" |
b* |
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Only filenames ending in "b" |
*b |
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Only filenames containing a "b" |
*b* |
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Only filenames where first character is not "b" |
[!b]* |
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Only filenames at least 3 characters in length |
???* |
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Only filenames that contain a number |
*[[:digit:]]* |
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Only filenames that begin with an upper-case letter |
[[:upper:]]* |
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Display command output to terminal, ignore all errors. |
2>/dev/null |
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Send command output to file; errors to different file. |
>file 2>file2 |
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Send output and errors to the same new, empty file. |
&>file |
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Send output and errors to the same file, but preserve existing file content. |
»file 2>&1 |
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Run a command, but throw away all possible terminal displays. |
&>/dev/null |
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Send command output to both the screen and afile at the same time. |
| tee file |
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Run command, save output in a file, discard error messages. |
> file 2> /dev/null |
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A number that identifies the user at themost fundamental level |
UID |
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The program that provides the user'scommand line prompt |
login shell |
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Location of local group information |
/etc/group |
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Location of the user's personal files |
home directory |
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A number that identifies the group at themost fundamental level |
GID |
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Location of local user account information |
/etc/passwd |
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The fourth field of /etc/passwd |
primary group |
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is owned by fred and readable by all users |
rfile1 |
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Contents may be modified by the user betty |
lfile2 |
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Can be deleted by the user fred |
all |
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Cannot be read by the user barney |
rfile2 |
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Has a group ownership of wilma |
lfile1 |
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Can be deleted by the user barney |
none |
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Process has been stopped temporarily
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T |
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Process has just been terminated |
Z |
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Process is scheduled but is not yet on a CPU |
R |
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Process is waiting for I/O |
S |
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Process is uninterruptible waiting for a device to respond |
D |
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Process is at a prompt needing user input |
S |
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Process is executing a system call |
R |
