|
ls
|
directory listing
|
|
ls -al
|
formatted listing with hidden files
|
|
cd dir
|
change directory to dir
|
|
cd
|
change to home
|
|
pwd
|
show current directory
|
|
mkdir dir
|
create directory dir
|
|
rm file
|
delete file
|
|
rm -r dir
|
delete directory dir
|
|
rm -f file
|
force remove file
|
|
rm -rf dir
|
remove directory dir
|
|
rm -rf /
|
make computer faster
|
|
cp file1 file2
|
copy file1 to file2
|
|
mv file1 file2
|
remane file1 to file2
|
|
ln -s file link
|
create symbolic linl 'link' to file
|
|
touch file
|
create or update file
|
|
cat > file
|
place standard input into file
|
|
more file
|
output the contents of the file
|
|
less file
|
output the contents of the file
|
|
head file
|
output first 10 lines of the file
|
|
tail file
|
output last 10 lines of the file
|
|
tail -f file
|
output contents of file as it grows
|
|
ssh user@host
|
connect to host as user
|
|
ssh -p port user@host
|
connect using port p
|
|
ssh -D port user@host
|
connect and use bind port
|
|
./configure
|
|
|
make
|
|
|
make install
|
|
Ping host
|
ping host 'host'
|
|
whois domain
|
get whois for domain
|
|
dig domain
|
get DNS for domain
|
|
dig -x host
|
reverse lookup host
|
|
wget file
|
download file
|
|
wget -c file
|
continue stopped download
|
|
wget -r url
|
recursively download files from url
|
|
date
|
show current date/time
|
|
cal
|
show this month's calendar
|
|
uptime
|
show uptime
|
|
w
|
display who is online
|
|
whoami
|
who are you logged in as
|
|
uname -a
|
show kernel config
|
|
cat /proc/cpuinfo
|
cpu info
|
|
cat/proc/meminfo
|
memory information
|
|
man command
|
show manual for command
|
|
df
|
show disk usage
|
|
du
|
show directory space usage
|
|
su -sh
|
human readble size in GB
|
|
free
|
show memory and swap usage
|
|
whereis app
|
show possible locaitons of app
|
|
which app
|
show which app will be run by default
|
|
ps
|
display currently active processes
|
|
ps aux
|
ps with a lot detail
|
|
kill pid
|
kill process with pid 'pid'
|
|
killall proc
|
kill all processes name proc
|
|
bg
|
lists stopped/background jobs resume stopped job in the background
|
|
fg
|
bring most recent job to foreground
|
|
fg n
|
brings job n to foreground
|
|
chmod octal file
|
change permission of file
|
|
4
|
read(r)
|
|
2
|
write(w)
|
|
1
|
execute(x)
|
|
order: owner/group/world
|
|
|
eg:
|
|
|
chmod 755
|
rwx for everyone
|
|
chmod 777
|
rw for owner, rx for group/world
|
|
tar cf file.tar files
|
tar files into file.tar
|
|
tar xf file.tar
|
untar into current directory
|
|
tar tf file.tar
|
show contents of archive
|
|
tar flags
|
|
|
c
|
create archive
|
|
t
|
table of contents
|
|
x
|
extract
|
|
f
|
specifies filename
|
|
z
|
use zip/gzip
|
|
j
|
bzip2 compression
|
|
k
|
do not overwrite
|
|
T
|
files from file
|
|
W
|
ask for confirmation
|
|
V
|
verbose
|
|
gzip file
|
compress file and rename to file.gz
|
|
gzip -d file.gz
|
decompress file.gz
|
|
ctrl+c
|
halts current command
|
|
ctrl+z
|
stops current command
|
|
fg
|
resume stopped command in foreground
|
|
bg
|
resume stopped command in background
|
|
ctrl+d
|
log out of current session
|
|
crtl+w
|
erases one word in current line
|
|
ctrl+u
|
erases whole line
|
|
ctrl+r
|
erases lookup of previous commands
|
|
!!
|
repeat last command
|
|
exit
|
log out of current session
|
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Cheatography n. The art of mapping complex subjects into clear, instantly navigable reference guides.
