CommandLineDefs Flashcards
1
Q
pwd
A
print working direcdtory
2
Q
hostname
A
My computer’s network name
3
Q
mkdir
A
make directory
4
Q
cd
A
change directory
5
Q
ls
A
list directory
6
Q
rmdir
A
remove directory
7
Q
pushd
A
push directory
8
Q
popd
A
pop directory
9
Q
cp
A
copy a file or directory
10
Q
mv
A
move a file or directory
11
Q
less
A
page through a file
12
Q
cat
A
print the whole file
13
Q
xargs
A
execute arguments
14
Q
find
A
find files
15
Q
grep
A
find things insdie a file
16
Q
man
A
read a manual page
17
Q
apropos
A
find what man page is approproate
18
Q
env
A
look at your enviroment
19
Q
echo
A
print some arguments
20
Q
exit
A
exit the shell
21
Q
sudo
A
DANGER! become super user root DANGER!
22
Q
chmod
A
change permision modifiers
23
Q
chown
A
change ownership
24
Q
|
A
The | takes the output from the command on the left, and “pipes” it to the command on the right.
25
<
The < will take and send the input from the file on the right to the program on the left.
26
>
The > takes the output of the command on the left, then writes it
to the file on the right.
27
>>
The >> takes the output of the command on the left, then appends it to the file on the right.
28
*
"matches anything in a wildcard like *.txt
29
xargs
The xargs utility reads space, tab, newline and end-of-file delimited strings from the standard input and executes utility with the strings as arguments.
30
sudo
sudo allows a permitted user to execute a command as the superuser or another user, as specified in the sudoers file.
31
chmod
The chmod utility modifies the file mode bits of the listed files as speci-fied by the mode operand.
32
chown
The chown utility changes the user ID and/or the group ID of the specified files.
