Commands Flashcards
(30 cards)
1
Q
pwd
A
print working directory
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
find STARTDIR -name
WILDCARD -print
15
Q
grep
A
find things inside files
16
Q
man
A
read a manual page
17
Q
apropos
A
find what man page is appropriate
18
Q
env
A
look at your environment
19
Q
echo
A
print some arguments
20
Q
export
A
export/set a new environment variable
21
Q
exit
A
exit the shell
22
Q
sudo
A
DANGER! become super user root DANGER!
23
Q
chmod
A
change permission modifiers
24
Q
chown
A
change ownership
25
touch
make empty file
26
*
matches anything in a wildcard like *.txt
27
$ >> $
The >> takes the output of the command on the left, then appends it to the file on the right.
28
$ > $
The > takes the output of the command on the left, then writes it to the file on the right.
29
$ < $
The < will take and send the input from the file on the right to the program on the left.
30
$ | $
The | takes output from the command on the left, and "pipes" it to the command on the right.
