We use find and locate to dig up lists of files on our system that matchcertain criteria. We also look at xargs for executing commands on a selectedset of files.

Episode 11: Filesystems

Oct 13th, 2015

We investigate the standard filesystem hierarchy and some tools for managingfilesystems.

Episode 10: Shell scripts

Sep 29th, 2015

We create shell scripts using the hash-bang header, and also look atpermissions, variables, and loops in the shell.

Episode 9: Redirection and substitution

Sep 22nd, 2015

We explore some more shell basics including redirection to and from files, andcommand substitution. This feature allows the output of one command to be usedas parameters of another command.

Episode 8: Package managers

Sep 15th, 2015

In this episode, we explore some of the capabilities of package managers forinstalling and updating software on your system. Specifically, we look at the‘apt’ system on Ubuntu GNU/Linux. On other systems, you might use Yum(RedHat/Fed

Episode 7: ImageMagick

Sep 8th, 2015

We look at ImageMagick, a powerful suite of command-line tools for doing imageprocessing. With it, we resize, crop, blur, and do format-conversion on acollection of image files.

Episode 6: File management part 2

Sep 1st, 2015

In this episode, we continue looking at managing files and directories usingcp, rm, mkdir, and rmdir. We also show off the tree command andrevisit creating an alias in our .bashrc.

Episode 5: File management part 1

Aug 25th, 2015

We use mv to move and rename files, and create a shell alias to improve thesafety of one of its sharp edges. We also introduce the .bashrc configurationscript, and mkdir to create directories.

Episode 4: Text manipulation

Aug 18th, 2015

We learn about text manipulation commands like cut, sort, and uniq. Webuild sophisticated pipelines to analyze data, including surveys and web logs.We also look briefly at invoking simple text editors from the command line,like nano,

Episode 3: Wildcards and grep

Aug 10th, 2015

In this episode, we use basic wildcards to select files, and then explore howthe ‘grep’ command can search for words or phrases across multiple files. Asalways, you can follow along using the same directory structure by downloadingit

Episode 2: Viewing files

Aug 4th, 2015

We look at viewing files using commands like cat, more, less, head, andtail, including using those in short pipelines. We also try opening files inexternal applications using open or xdg-open (and live dangerously bydumping a binary

Episode 1: echo "Hello!"

Jul 28th, 2015

Welcome to Command Line TV, a new video podcast to help you learn and masterthe UNIX shell. In this first episode, we talk about our backgrounds, the scopeof this endeavor, opening your terminal, and using basic commands like cd andl

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