Questions specifically about Linux, as opposed to Unix-like systems in general, or to questions about a specific distribution or program.

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7
votes
5answers
18k views

DNS queries not using nscd for caching

I'm trying to use nscd (Nameservices Cache Daemon) to cache DNS locally so I can stop using Bind to do it. I've gotten it started and ntpd seems to attempt to use it. But everything else for hosts ...
4
votes
1answer
2k views

Default username for Samba share that is not the user name on the client system

When mounting a Samba share the user name is defaulting to the user name from the client machine rather than the "User Name" field from the earlier "Connect to Server" dialogue. Accessing a Samba ...
6
votes
2answers
717 views

Font getting reset in virtual console on GNU/Linux

I have set a custom font on my virtual console (vt1) using the following command: shell> setfont ter-114f If I switch to X (using Ctrl+Alt+F7) and come back to the virtual console (using ...
6
votes
5answers
1k views

Why does locale es_MX work but not es?

Wikipedia entry for GNU gettext shows an example where the locale is just the lanuage, "fr". Whereas the 'i18n gettext() “hello world” example' in SO has the locale value with both the language and ...
53
votes
14answers
47k views

Determine the size of a block device

How can I find out the size of a block device, such as /dev/sda? Running ls -l gives no useful information.
11
votes
4answers
178 views

What is Linux for SET FILE/ERASE_ON_DELETE?

In VMS one may tell the file system to write junk over the existing contents of a file when it is deleted. Here is the DCL command to identify the file for this kind of treatment: $ SET ...
11
votes
2answers
2k views

Is it possible to simulate installation of Debian packages, still marking them installed?

Here's what I would like. Start with a virtual system with no installed packages. Then I invoke a tool similar to apt-get to ask it to compute the dependencies and mark all the packages that would be ...
8
votes
3answers
2k views

How should I configure grub for booting linux kernel from a USB hard drive?

I have a laptop hard drive in an external enclosure which I use as a large pendrive. For an added twist, I have installed Linux on it, so I can boot any machine with my distribution of choice (e.g. ...