Linux commands

• Running multiple commands
  • Both attempted, even if first one has error
    • [Command1]; [Command2];
  • Use short circuiting - [Command] will only happen if [Test] succeeds
    • [Test] && [Command]

alias

awk

cal

cd

cp

find

grep

history

ifconfig

ipfw

iptables

jobs

killall

lscpu

ln

ls

lynx

nc

ping

ps for processes

• often top is more useful

rm

sed

• search replaces in stream (e.g. file)
• to have it act on a string, pipe it

echo "i do not like spaces"|sed 's/ /_/g'

source

* Update `.bash_profile` without a restart
* `source .bash_profile`

SSH

su

tail

tcpdump

tcpflow

tr

traceroute

wget

• If you want to grab a file from the 'net
• wget tutorial

# get urls from a file
wget -i filename.ext

zip

zip command will update a file in a zip archive if used with an existing archive -m option will delete the files after putting them in the archive (suggested to use with -T)

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