ls -lR | grep ^d | wc -l
ls -lR gets a long format of all files and directories of a given folder. Every line which contains a directory starts with d as the first character. So grep ^d filters all such lines (^ is for Beginning-Of-Line). wc -l counts the Newline characters in a given file or stdin. Because every line contains a single directory entry and every line ends with a newline character, you will get the number of the directories.
tcpdump -nnvvS host <ip-address>
To look into the data packet add the -X switch:
tcpdump -nnvvXS host <ip-address>
A nice tutorial in German is available on http://www.selflinux.org/selflinux/html/dvd-rippen.html.
To access an SSH server you should always use keys instead of simple passwords. Generate your keypair with PuttyGen and save your private and public key part. On Windows you can use the private part with PageAnt to provide access to the SSH server without entering a passphrase. On the SSH server store your public part within the .ssh/authorized_keys file. But don’t use the Putty-generated public part, you have to copy and paste the OpenSSH format of the public key from the PuttyGen window.
If you need your private key on a Linux client to access the SSH server, you cannot use the Putty-generated private part. You will also need an OpenSSH format. This format you can export with the menu Conversions -> Export OpenSSH key. Store your OpenSSH key as id_rsa or id_dsa file and put it into the .ssh folder of the user. Both files will be used by the SSH client (the possible file names you can find on /etc/ssh/ssh_config as IdentityFile property). If you cannot use these file names, you can also store the private key with another name, but you have to define a config section for the SSH server in ~/.ssh/config:
#
# default:
# .ssh/identity
# .ssh/id_rsa
# .ssh/id_dsa
#
host name_ssh_server
Hostname full-qualified.ssh.server.name
Port 22
IdentityFile ~/.ssh/you_own_private_key_name
ForwardX11 no
You can now access the server “name_ssh_server” with
ssh username@name_ssh_server
which will use “full-qualified.ssh.server.name” on port 22. The private key file is accessible on ~/.ssh/you_own_private_key_name (file permissions 600!) and should match with an authorized public key on the SSH server.
Use your SSH-Key (uploaded to GitHub.com)!
$ git clone git@github.com:witchi/PHP-SQL-Parser.git
$ cd PHP-SQL-Parser
$ git branch --no-track svnsync
$ git checkout svnsync
$ git svn init -s https://php-sql-parser.googlecode.com/svn
phosco@gmx.de = André Rothe <phosco@gmx.de>
greenlion = Justin Swanhart <greenlion@gmail.com>
greenlion@gmail.com = Justin Swanhart <greenlion@gmail.com>
Justin Swanhart = Justin Swanhart <greenlion@gmail.com>
(no author) = Justin Swanhart <greenlion@gmail.com>
$ git svn fetch -A svn-authors.txt
$ git reset --hard remotes/trunk
$ git checkout svnsync
$ git svn rebase -A svn-authors.txt
$ git checkout master
$ git merge svnsync
$ git mergetool
$ git push origin master
$ git checkout master
$ git pull origin master
$ git checkout svnsync
$ git svn rebase -A svn-authors.txt
$ git merge --no-ff master
$ git mergetool
$ git commit
$ git svn dcommit
To set some important configuration properties for Git use the following commands:
$ git config --global user.name "John Doe"
$ git config --global user.email johndoe@example.com
$ git config --global merge.tool meld
The properties are set for all repositories on the current machine.
Look into /usr/share/php5/PEAR/PHP/CodeSniffer/Standards
All sub-folders there can be used as standard name:
phpcs --standard=PEAR test.php
phpcs --standard=Zend test.php
If your local computers allow a ping, you can simply execute:
nmap -sP 192.168.x.*
where x is the subnet number (1 <= x <= 254). You will get a list of all hosts, their IP addresses and their MAC addresses. That is really cool for DHCP networks, where you don't know, which IP addresses are already been used.
cd /etc
Set the timezone of your server location:
ln -sf /usr/share/zoneinfo/Europe/Berlin localtime
Check the new settings with:
date
If you have set the hardware clock with an UTC timestamp, the date command will calculate the correct time offset using the localtime settings (including daylight save time switch).
Execute this on your Glassfish machine:
### ### HttpToHttpsRedirectOnDifferentPort ### asadmin create-protocol --securityenabled=false http-redirect asadmin create-http-redirect --redirect-port 443 --secure-redirect true http-redirect asadmin create-protocol --securityenabled=false http-redirect-base asadmin create-protocol-finder --protocol http-redirect-base --target-protocol http-listener-2 --classname com.sun.grizzly.config.HttpProtocolFinder https-finder asadmin create-protocol-finder --protocol http-redirect-base --target-protocol http-redirect --classname com.sun.grizzly.config.HttpProtocolFinder http-redirect asadmin set configs.config.server-config.network-config.network-listeners.network-listener.http-listener-1.protocol=http-redirect-base
