Updated September 07, 2004
Created June 11, 2004

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ls, mv, cp,

cat, head, tail, grep, diff, wc, sed, awk, file, strings, tac, more, less

find, slocate,

tar, cpio, gzip, gunzip, zcat

df, du,

ps, kill, killall, service, /etc/init.d/*, /etc/xinetd.d/*,

free,

top, watch,

vi,

chown, chgrp, chmod,

ifconfig, netstat, ssh, rsh, telnet, rsync,

for, while, read, history,

Advanced: expect, script, tee, nohup

mkisofs, cdrecord,

ps2pdf

jpegtran

date, cal

dmesg, /var/log/messages

chkconfig

iptables, ipchains, gShield,

seq

printf


File Permissions
I/O Redirection
Pipes
Regular Expressions
Absolute and Relative Paths
Loop Devices
Device Nodes
Job Control

ls -ltr [long, sort by time, reverse sort order]
ls -ltra [a = show hidden files -- they have a leading dot]
mv -i [interactive, prompt before overwriting]
cp -ai [interactive, prompt before overwriting, a = archive to keep date and time stamps]
cat [concatenate files and print on standard out]
cat -n [add numbers to the lines]
head -5
tail -2
grep mystring
grep -i mystring
grep [0-9]
grep ^mystring
grep mystring$
diff -Naur
diff -Naurq
diff -Naurb
wc
wc -l
sed -e 's/Search String/Replace String/'
sed -e 's/Search String/Replace String/g'
sed --silent 1,2p myfile.txt
sed 1,2d myfile.txt
sed -e 's,\(match\)\(this\),\2\1,'
ps aux | awk '{print $2}'
file unknownfile.abc
strings myfile.txt | grep -i SearchString
cat myfile.txt
tac myfile.txt
more myfile.txt
cat myfile.txt | more
less myfile.txt
cat myfile.txt | less
find .
find . -type f
find . -type d
find . -type f -exec grep -Hi {} \;
slocate -u
slocate FileName
slocate -i FileName
tar -cf newfile.tar .
tar -czf newfile.tar.gz .
tar -czf newfile.tgz .
tar -cf newfile.tar file1 file2 file3 dir1/ file4
tar -czf newfile.tar.gz file1 file2 file3 dir1/ file4
tar -czf newfile.tgz file1 file2 file3 dir1/ file4
mkdir unpack; cd unpack && tar -xvf ../tarfile.tar
mkdir unpack; cd unpack && tar -xzvf ../tarfile.tar.gz
mkdir unpack; cd unpack && tar -xzvf ../tarfile.tgz
find mydir/ | cpio -o -H crc > mystuff.cpio
find mydir/ | cpio -o -H crc | gzip -n9 > mystuff.cpio.gz
find mydir/ | cpio -o -H crc | gzip -n9 > mystuff.cgz
mkdir unpack; cd unpack && cat ../myfiles.cpio | cpio -idvm
gzip myfile.tar
gunzip myfile.tar.gz
zcat myfile.tar.gz > myfile.tar
df
df -h
df -h .
du -sh .
du -sh thisdir/
ps aux
ps waux
ps wfaux
ps wjfax
kill 37598
kill -9 37598
killall mozilla-bin
service cupsd start
service cupsd stop
service cupsd restart
service cupsd status
/etc/init.d/cupsd status
free -m
top
watch ls -ltr
watch -n0 ls -ltr
watch -n0 "ps aux | grep riblack | grep -v grep"

vi

Movement:
jkhl
wWbBeE
gg
G
:3
:15
CTRL+e
CTRL+y
CTRL+d
CTRL+u

Undo/Redo/Save/Abort/Exit
u
CTRL+r
:w
:q!
:q
:wq

Insert/Append/Copy/Paste
iIaAoO
yy
5yy
p
5p
P

Replace/Delete
r
R
dd
99dd
D

Searching
/SearchString
n
N
?SearchString
n
N

Visual Mode
v
SHIFT+v
CTRL+v

Vi Variables
:set ic
:set noic
:set nu
:set nonu

Swap case
~

chown riblack file1
chown riblack.riblack file1
chown -R riblack.riblack mydir/
chgrp riblack file1
chgrp riblack mydir/
chgrp -R riblack mydir/
chmod u+rwx file1
chmod g-x file1
chmod o=rx file1
chmod 0750 file1
chmod -R 0750 mydir/

ifconfig
ifconfig -a
ifconfig | grep inet
ifconfig eth0 192.168.0.44 up
ifconfig eth0 192.168.0.44 netmask 255.255.248.0 up

ifconfig mac setup.....

netstat
netstat -n
netstat -rn

ssh dest
ssh -C dest
ssh user@dest
ssh user@dest "tar -cf - myfile.txt" | tar -xvf -
tar -cf - file1 | ssh user@dest "tar -xvf -"
rsh dest
telnet
rsync -avx -e ssh localdir/ dest:/tmp/dropoff/
rsync -avx -e ssh dest:~/public_html/ 20040608/
rsync -avx -e ssh --link-dest=../20040607/ dest:~/public_html/ 20040608/

for X in 1 2 3; do echo $X; done
for IP in `cat iplist.txt`; do ssh $IP "rpm -hUv ftp://dest/pub/myrpm.rpm"; done
for IP in `cat iplist.txt`; do ssh $IP "rpm -hUv ftp://dest/pub/myrpm.rpm" & done
ps aux | while read COL1 COL2 COL3 COL4 AllOtherCols; do echo $COL1 $COL2; done

history | tail -10
history 5



seq 1 5
seq -f "%04g" 1 12



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