Useful Commands on sk33lz

Git

Sun, 05 May 2019 00:00:00 +0100

Git requires SSH key pair authentication to access remote repositories.

Generate a 2048-bit RSA Encrypted SSH key pair.

ssh-keygen -t rsa -b 2048

Generate a 4096-bit RSA Encrypted SSH key pair.

ssh-keygen -t rsa -b 4096

This should generate a file named id_rsa.pub in your /home/username/.ssh folder. You must copy this key and enter it into your user account for repository hosting services.

Display your Public Key.

cat ~/.ssh/id_rsa.pub

Sites such as Github, Unfuddle, and BitComet require your SSH Public Key to access their repositories. One you have added the key to your account you are ready to commit and clone repositories.

Check your current git identity.

git config -l

Identify yourself to git.

git config --global user.name "Your Name"
git config --global user.email user@example.com

Example:

git config --global user.name "John Doe"
git config --global user.email john.doe@example.com

It is best to use your real name and your email address. That way people know commits are coming from you.

Initialize and create a new git repository.

git init

Add all files and folders to the local git repository.

git add *

Add a single file to your local git repository.

git add filename

Example:

git add readme.txt

Commit your changes to your local git repository.

git commit -m "explain your commit here."

Example:

git commit -m "initial commit"

Add a remote repository to your git repository.

git remote add remote-name git://example.com/username/repository-name.git

Example:

git remote add origin git://github.com/sk33lz/zenlike.git

Configure a branch on your remote repository as an upstream server.

git config remote.remote-name.push refs/heads/branch-name:refs/heads/branch-name

Example:

git config remote.origin.push refs/heads/master:refs/heads/master

Push your changes to your remote git repository.

git push -u remote-name branch-name

Example:

git push -u origin master

Clone a Git repository. (Read / Write)

git clone git@example.com:username/repository-name.git

Example:

git clone git@github.com:sk33lz/zenlike.git

Clone a Git repository . (Read Only)

git clone git://example.com:username/repository-name.git

Example:

git clone git://github.com/sk33lz/zenlike.git

Helpful MySQL Commands

Sun, 05 May 2019 00:00:00 +0100

Secure MySQL after a new installation.

mysql_secure_installation

Create a MySQL server database.

mysqldump -uroot -p database-name > database.sql

Example:

mysqldump -uroot -p old_db > db1.sql

Enter your user password, in this case root, at the prompt. This command can also be ran with a database user with the right permissions. Take note of the greater than sign being used. Think of it as an arrow as to the direction that you want the data to flow. That is how I remember the difference in this command, as it’s easy to associate the two.

Import a MySQL server database dump.

mysql -uroot -p database-name < database.sql

Example:

mysql -uroot -p new_db < db1.sql

Again, enter your user password at the prompt to restore the database dump you made earlier. Notice that the greater than has changed to a less than symbol as the flow of data has changed to going into the database.

Disable innodb in MySQL 5.5+

ignore-builtin-innodb
default-storage-engine myisam

Disable innodb in MySQL 5.4 and below

skip-innodb

Helpful Ubuntu Shell Commands

Sun, 05 May 2019 00:00:00 +0100

Below you will find a variety of common Linux commands. My distribution of choice is Ubuntu Server, so all commands will work on Ubuntu and Debian Linux.

Many of the following commands should work for other Linux distributions such as Redhat as well, although some commands are different.

Helpful Ubuntu Shell Commands

Make a tarball archive file with the following command.

tar -czvf tarball-name.tgz directory-name

Example:

tar -czvf archive.tgz archive

Extract a tarball archive file with the following command.

tar -xzvf file name

Example:

tar -xzvf archive.tgz

Truncate a file.

> /path/to/file/filename

Example: Truncate Mail for a certain user.

> /var/mail/username

Clear filesystem cache, dentries, and inodes.

echo 3 > /proc/sys/vm/drop_caches

##Remove a Service from System Startup.

update-rc.d -f service name remove

Example:

update-rc.d -f nginx

Add a Service to System Startup

update-rc.d service name defaults

Example:

update-rc.d nginx defaults

Add a Service to Startup with a specific priority level

update-rc.d service name defaults priority level

Example:

update-rc.d nginx defaults 75

##Find all packages installed for a specific service

dpkg -l | grep service name

Example:

dpkg -l | grep maria

Remove specific packages installed for a service.

Some might remain after apt-get remove, or were installed differently.

apt-get purge service name

Example:

apt-get purge mariadb-server-5.5

Secure your Drupal files and folders with a few simple commands.

Thanks Greggles!

Replace greg with your username.

cd /path_to_drupal_installation
chown -R greg:www-data .
find . -type d -exec chmod u=rwx,g=rx,o= '{}' \;
find . -type f -exec chmod u=rw,g=r,o= '{}' \;

Helpful Windows Shell Commands

Sun, 05 May 2019 00:00:00 +0100

7Zip Commands

Note: Copy the 7z.exe file to the folder you are working in.

7Zip all files in a folder to the .7z format.

FOR %i IN (*.*) DO 7z.exe a "%~ni.7z" "%i"

7Zip all files in a folder to the .zip format.

FOR %i IN (*.*) DO 7z.exe a -tzip "%~ni.zip" "%i"

Other Useful Commands

Sun, 05 May 2019 00:00:00 +0100

In this tutorial, I’ll share my top 10 tips for getting started with Academic:

Tip 1

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Useful Commands on sk33lz

Git

Generate a 2048-bit RSA Encrypted SSH key pair.

Generate a 4096-bit RSA Encrypted SSH key pair.

Display your Public Key.

Check your current git identity.

Identify yourself to git.

Initialize and create a new git repository.

Add all files and folders to the local git repository.

Add a single file to your local git repository.

Commit your changes to your local git repository.

Add a remote repository to your git repository.

Configure a branch on your remote repository as an upstream server.

Push your changes to your remote git repository.

Clone a Git repository. (Read / Write)

Clone a Git repository . (Read Only)

Helpful MySQL Commands

Secure MySQL after a new installation.

Create a MySQL server database.

Disable innodb in MySQL 5.5+

Disable innodb in MySQL 5.4 and below

Helpful Ubuntu Shell Commands

Helpful Ubuntu Shell Commands

Extract a tarball archive file with the following command.

Truncate a file.

Clear filesystem cache, dentries, and inodes.

Add a Service to System Startup

Add a Service to Startup with a specific priority level

Remove specific packages installed for a service.

Drupal Related Shell Commands

Secure your Drupal files and folders with a few simple commands.

Helpful Windows Shell Commands

7Zip Commands

7Zip all files in a folder to the .7z format.

7Zip all files in a folder to the .zip format.

Other Useful Commands

Tip 1

Tip 2