How to Time Piped *nix Commands
If you want to time how long a piped bash command take, use the `time` command followed by your commands in parens like so..
time (ls -lha | wc -l)
How To Create a Dump File in Postgres Compatible with Heroku
When Heroku creates a dump file of your Postgres database it uses the `-Fc` option
It is equivalent to running
pg_dump -Fc -d name_of_db > name_of_db.dump
This command will let you import your database with the `pg_restore` command
How to Fix Pypi Upload failed (403): Invalid or non-existent authentication information.
If you run into authentication failure when trying to upload packages
Submitting dist/ to https://upload.pypi.org/legacy/
Upload failed (403): Invalid or non-existent authentication information.
error: Upload failed (403): Invalid or non-existent...
A Couple of Usefule Snippets When Working with Textmate
Here is the snippet
f path/to/directory 'search string' | open_in_mate
This snippet (technically 2 snippets) will recursively scan the contents of files in a directory and then open all the files it finds in Textmate.
It's useful on large projec...
How To Pipe To A Ruby Command Line Application
You need to read from STDIN rather than parse command line arguments.
How to Split a Large File Into Smaller Files on OSX or Unix
Use the split command.
split -l 1000 name-of-file output/directory
You can set the number of lines (the "-l" flag) to split on and also the location of where the split files should be saved. Note, the output directory must already exists....
Recursively Search Contents of a File with Grep
The -r flag is for recursive, meaning it will also look in sub directories. The -i flag is for case insensitivity, meaning WORD and word will both be found.
grep -ir "search term" directory/path
How To Create Blurry Background Images Programmatically from the Command Line or with Ruby
You can use ImageMagick to make blurry images.
To install with Homebrew on OS X.
brew install imagemagick
After installing you can run from the command line
convert yourimage.png -channel RGBA -blu...
Launch Photoshop (Or Any App) From The Command Line on Mac OS X
I often find myself coding with the terminal open. Cding around a web app project I usually end up at some point launching Photoshop. Either to touch up or work on a psd, png, jpg ...etc. I fire up Photoshop and then navigate to the app's public directory...
Recursively Zip a Directory and Files on Linux
It's Short and sweet!
Just remember that the finished zip filename is the first argument and the directory you wish to recursively zip comes after.
zip -r name_of_your_directory.zip name_of_your_directory
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Add Users to a Group on Ubuntu
To create a new user on Ubuntu (Heron8)
To create a new group
Add johndoe to the barleyfarmers group
adduser johndoe barleyfarmers
The adduser command, when you're first adding the new user accou...