free -h
alias freak="free -h"
which free
type pwd
echo $SHELL
uname -m
info ls
history
env
date
sleep 300
uname -a
df -lh
mount
mount partition path
umount partition
sudo fdisk -l
cat /proc/cpuinfo
cat /proc/meminfo
pagesize
ifconfig
iwconfig
route
netstat
ping IP
traceroute IP
dhclient
host domain
wget url
ssh ID@host
sftp ID@host
scp localpath ID@host:path
scp -r ID@site:path localpath
zip file.zip file1 file2
unzip file.zip
gzip -c filename > file.gz
gunzip file.gz
tar -cf file.tar file1 file2
tar -xf file.tar
cp a.txt b.txt
mv a.txt c.txt
rm -r dir
mkdir /home/vamei/good
rmdir /home/vamei/good
chmod 755 a.txt
chown root a.txt
chgrp root a.txt
ls -l *.txt
ls > 2.txt
echo IamVamei > a.txt
cat < a.txt > b.txt
cat a.txt | wc
du -sh dir
find . -name filename
ln -s filename path
pwd
touch filename
head -1 filename
tail -5 filename
diff file1 file2
uniq filename
sort filename
wc filename
echo string | cut -c5-7
echo string | grep regex
ps -eo pid,comm,cmd
pstree
netstat -ntlp
cat > log &
fg %1
top
ps
lsof -u username
kill PID
dmesg
time a.out
who
write username
su
sudo
passwd