At work, we needed to replace a pre-existing folder with a symlink. We wanted to symlink the user’s .git/hooks folder to ../build/git-hooks every time the script was run. We wanted to delete .git/hooks if it existed and replace it with a symlink, but we also wanted to avoid deleting ../build/git-hooks‘s contents by accident if the […]
After a fresh install of npm and bower, you may run into the following error while running bower install: /usr/bin/env: node: No such file or directory The fix on Ubuntu is very simple: sudo ln -s /usr/bin/nodejs /usr/bin/node
Some servers run their SSH server on a different port than 22 for a variety of reasons, including security. To specify a custom port when connecting, use the -p flag as in the example below: ssh firstname.lastname@example.org -p 2222 In this example, the client would attempt to connect using port 2222.
If you are dealing with files, you might wonder what the difference is between mtime, ctime and atime. mtime, or modification time, is when the file was last modified. When you change the contents of a file, its mtime changes. ctime, or change time, is when the file’s property changes. It will always be changed […]
If you need to have large files to test your application, there is a command in OS X and Linux that allows you to create a file of an arbitrary size. We already know that you can create an empty file by using touch: touch myfile.ext You can also create files with a preset size […]
If you need easy_install on your Ubuntu or Linux Mint machine, use the following command to install it: sudo apt-get install python-setuptools python-dev build-essential I strongly suggest that you use pip instead, but I’m leaving this here for those it might help.
If you find the OS X Terminal’s lack of color hard on the eyes, here’s how to set the colors. To get this color scheme, open ~/.bash_profile and add this: export CLICOLOR=1 export LSCOLORS=GxFxCxDxBxegedabagaced export PS1=”\[\033[36m\]\u\[\033[m\]\[\033[32m\]:\[\033[33;1m\]\W\[\033[m\]\$ ” alias ls=’ls -GFh’ The first line enables colors, the second sets the colors for ls and the last […]
If you use the OS X terminal, you are probably familiar with the open command. Essentially, it opens the given file with the default application, or with the application specified with the -a parameter. For example, open hello.txt will open hello.txt using TextEdit or your default text editor. You can also use this command to […]
When you run a command in the terminal, and realize it requires superuser permissions, use the following command to re-run the command as superuser: sudo !! Here is an example scenario: apt-get install myapplication (permission denied) sudo !! The best part is that you can use this to prefix your command with anything. In the […]