tuxfight3r

#Declare Variables
cat > cas <<EOF
#CAS TEST CONFIG
# Vars starting with APP_ are used to replace contents in skeletons files

APP_HTTP_PORT=12385
APP_HTTPS_PORT=12386
APP_AJP_PORT=12387

APP_HTTP_MAX_THREADS=150

tuxfight3r

#get certificate issuer/expiry date
$echo | openssl s_client -connect google.com:443 2>/dev/null | openssl x509 -noout -issuer -subject -dates
issuer= /C=US/O=Google Inc/CN=Google Internet Authority G2
subject= /C=US/ST=California/L=Mountain View/O=Google Inc/CN=*.google.com
notBefore=Dec 11 12:49:14 2013 GMT
notAfter=Apr 10 00:00:00 2014 GMT

# Hash value
$ echo | openssl s_client -connect google.com:443 2>/dev/null | openssl x509 -noout -hash
a18bd28a

tuxfight3r

#If your Kernel is compiled with CONFIG_MAGIC_SYSRQ (sysrq-trigger).
#If so, you have the possibility so send binding command.

Reset your server (like pressing the hardware RESET button) :

# echo b > /proc/sysrq-trigger

Sync the hard disks before:

# echo s > /proc/sysrq-trigger

tuxfight3r

Each of these commands will run an ad hoc http static server in your current (or specified) directory, available at http://localhost:8000. Use this power wisely.

Discussion on reddit.

Python 2.x

$ python -m SimpleHTTPServer 8000

tuxfight3r

# This is the ProFTPD configuration file
#
# See: http://www.proftpd.org/docs/directives/linked/by-name.html


# Server Config - config used for anything outside a <VirtualHost> or <Global> context
# See: http://www.proftpd.org/docs/howto/Vhost.html

# Trace logging, disabled by default for performance reasons
# (http://www.proftpd.org/docs/howto/Tracing.html)

tuxfight3r

Developer Cheat Sheets

This are my cheat sheets that I have compiled over the years. Tired of searching Google for the same things, I started adding the information here. As time went on, this list has grown. I use this almost everday and this Gist is the first bookmark on my list for quick and easy access.

I recommend that you compile your own list of cheat sheets as typing out the commands has been super helpful in allowing me to retain the information longer.

tuxfight3r

VIM KEYBOARD SHORTCUTS

MOVEMENT

h        -   Move left
j        -   Move down
k        -   Move up
l        -   Move right
$        -   Move to end of line
0        -   Move to beginning of line (including whitespace)

tuxfight3r

#Read multiple keys from an authorized_keys file and print the finger print

[root@server01 .ssh]# while read line; do ssh-keygen -l -f /dev/stdin <<< $line; done < authorized_keys 
2048 87:7a:4d:70:d2:10:a4:4b:b7:e1:2b:7c:77:92:25:04 /dev/stdin (RSA)
2048 7d:f0:89:94:00:09:bc:70:46:59:8d:9a:70:3b:ac:70 /dev/stdin (RSA)
2048 61:63:ee:0d:f6:d2:d8:d6:ae:37:0c:35:ae:da:51:6a /dev/stdin (RSA)

#read a key from authorized key file
[root@server01 .ssh]# ssh-keygen -l -f authorized_keys 
2048 87:7a:4d:70:d2:10:a4:4b:b7:e1:2b:7c:77:92:25:04 authorized_keys (RSA)

tuxfight3r

##SSHAGENT PPID TRICK for DESKTOP
#source ~/.ssh-agent.sh in your .bashrc

SSHAGENTPPID=$(ps -eo ppid,comm|awk '/ssh-agent/ {print $1}')
 
if [ -n "$SSHAGENTPPID" ]
        then
                export SSH_AUTH_SOCK=`ls /tmp/ssh*/agent.$SSHAGENTPPID`
                export SSH_AGENT_PID=`pgrep -P $SSHAGENTPPID ssh-agent`
                echo "SSH agent pid $SSH_AGENT_PID";

tuxfight3r

#Install Ansible from EPEL
yum install ansible ansible-lint

#Update config file for ansible
cat >> /etc/ansible/hosts <<EOF

192.168.0.1

[web_servers]
192.168.0.20