The sys admin’s daily grind – Di

Di is All In

Article from Issue 147/2013
Author(s):

The more frequently a command is used, the fewer letters it should have, so the use of twokey commands like ls, mv, and df is second nature. We look at a previously little-known representative of this club, di.

To be fair, I have to admit that many two-letter commands compensate for their compact size with a breathtaking number of parameters. The tool I look at today, Di, is no exception. The name stands for “disk information” – it’s a kind df on steroids. Like its role model, Di delivers information about filesystems, but with much more detail, and the output filters are much better.

Figure 1 shows the output from di ‑a, a list of all mounted filesystems, including filesystems that do not exist physically but that the kernel hallucinates into the directory tree. The parameter ‑x lets you specify filesystems you want Di to hide (e.g., di ‑a ‑x proc keeps the /proc entry from being listed). You can also specify multiple filesystems in a comma-separated list:

di ‑a U ‑x proc,tmpfs,fuse

Buy this article as PDF

Express-Checkout as PDF
Price $2.95
(incl. VAT)

Buy Linux Magazine

SINGLE ISSUES
 
SUBSCRIPTIONS
 
TABLET & SMARTPHONE APPS
Get it on Google Play

US / Canada

Get it on Google Play

UK / Australia

Related content

  • Charly's Column

    Too many cooks spoil the broth, they say, but it could just as easily be an ingredient that isn’t part of the recipe. If you can’t reduce the number of cooks, you have to take other steps to make your broth more edible.

  • Command Line – Probing /proc

    The mysterious /proc virtual filesystem is a rich mine of information about everything in your system.

  • libferris

    With libferris, FUSE, and rsync, you can synchronize a filesystem with a dissimilar data source.

  • Offline FS

    Tired of copying and recopying files from your laptop to the office file server? Maybe you need an automated offline filesystem, such as OFS.

  • Cmdfs

    Cmdfs builds a filtered virtual filesystem based on a source directory tree. You can even integrate other programs to convert data on the fly.

comments powered by Disqus

Direct Download

Read full article as PDF:

050-050_charly.pdf (304.90 kB)

News

njobs Europe
What:
Where:
Country:
Njobs Netherlands Njobs Deutschland Njobs United Kingdom Njobs Italia Njobs France Njobs Espana Njobs Poland
Njobs Austria Njobs Denmark Njobs Belgium Njobs Czech Republic Njobs Mexico Njobs India Njobs Colombia