Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
63 Cards in this Set
- Front
- Back
|
ls -al
|
formatted listing with hidden file
|
|
|
cd
|
change to home
|
|
|
rm file
|
delete file
|
|
|
rm -r dir
|
delete dir
|
|
|
rm -f file
|
force remove file
|
|
|
rm -rf dir
|
force remove dir
|
|
|
cp file1 file2
|
copy file1 to file2
|
|
|
ln -s file link
|
create symbolic link 'link' to file
|
|
|
touch file
|
create or update file
|
|
|
cat > file
|
place standard input into file
|
|
|
head file
|
output the first 10 lines of file
|
|
|
tail file
|
output the last 10 lines of file
|
|
|
tail -f file
|
output the contents fo file as it grows, starting with the last 10 lines
|
|
|
ps
|
display your currently acrive processes
|
|
|
kill pid
|
kill process id pid
|
|
|
killall proc
|
kill all processes named proc
|
|
|
bg
|
lists stopped or background jobs; resume a stopped job in the background
|
|
|
fg
|
brings the most recent job to foreground
|
|
|
fg n
|
brings job n to the foreground
|
|
|
chmod 777
|
read, write, execute for all {user, group, world}
|
|
|
ssh user@host
|
connect to host as user
|
|
|
ssh -p port user@host
|
connect to host on port 'port' as user
|
|
|
ssh-copy-id user@host
|
add your key to host for user to enable a keyed or passwordless login
|
|
|
grep pattern files
|
search for pattern in files
|
|
|
grep -r pattern dir
|
search recursively for pattern in dir
|
|
|
command | grep pattern
|
search for pattern in the output of command
|
|
|
locate file
|
find all instance of file
|
|
|
date
|
show the current date and time
|
|
|
cal
|
show the current calendar
|
|
|
w
|
display who is on line
|
|
|
whoami
|
who you are logged in as
|
|
|
finger user
|
display information about user
|
|
|
uname -a
|
show kernel information
|
|
|
cat /proc/cpuinfo
|
cpu info
|
|
|
cat /proc/meminfo
|
memory info
|
|
|
df
|
show disk usage
|
|
|
du
|
show dir space usage
|
|
|
free
|
show memory and swap usage
|
|
|
whereis app
|
show possible locations of app
|
|
|
which app
|
show which app will be run by default
|
|
|
tar cf file.tar files
|
create a tar named file.tar containing files
|
|
|
tar xf file.tar
|
extract the files from file.tar
|
|
|
tar czf file.tar.gz files
|
create a tar with gzip compression
|
|
|
tar xzf file.tar.gz
|
extract a tar using gzip
|
|
|
tar cjf file.tar.bz2
|
create a tar with bzip2 compression
|
|
|
tar xjf file.tar.bz2
|
extract a tar using bzip2
|
|
|
gzip file
|
compresses fiel and renames it to file.gz
|
|
|
gzip -d file.gz
|
decompresses file.gz back to file
|
|
|
whois domain
|
get whois information for domain
|
|
|
dig -x host
|
reverse lookup host
|
|
|
wget file
|
download file
|
|
|
wget -c file
|
continue a stopped download
|
|
|
./configure
make make install |
install from source
|
|
|
dpkg -i pkg.deb
|
install a package (Debian)
|
|
|
rpm -Uvh pkg.rpm
|
install a package (RPM)
|
|
|
Ctrl+C
|
halts the current command
|
|
|
Ctrl+Z
|
stops the current command, resume with fg in the foreground or bg for background
|
|
|
Ctrl+D
|
log out of current session, similar to exit
|
|
|
Ctrl+W
|
erases one word in the current line
|
|
|
Ctrl+U
|
erases the whole line
|
|
|
Ctrl+R
|
type to bring up a recent command
|
|
|
!!
|
repeats the last command
|
|
|
exit
|
log out of the current session
|
