Ssh Settings

Translation(s): English - Español - Italiano - Português (Brasil)

This page indicates how to install/use Debian in your local language.

If you've upgraded from a very old version of Debian (before Etch), your sshdconfig(5) may not contain the correct AcceptEnv directive to let the ssh client pass locale variables. Edit your /etc/ssh/sshdconfig file and make sure it contains this line: AcceptEnv LANG LC. Then restart the ssh service to make it take effect. Once you select a platform, it will be stored in VS Code settings under the remote.SSH.remotePlatform property so you can change it at any time. After a moment, VS Code will connect to the SSH server and set itself up. VS Code will keep you up-to-date using a progress notification and you can see a detailed log in the Remote - SSH output channel.

Contents

  • Commonly used configuration options. Enabling X11 forwarding and agent forwarding. Developers, students, and researchers often want to enable X11 forwarding and SSH agent forwarding. Port forwarding. Configuring public key authentication. Certificate-based authentication.
  • The sshconfig file is used to control how secure shell, better known as the ssh terminal command, operates on your system. The sshconfig file is organized by hosts. Each host contains specific settings for that host. Wildcards like. can be used to match multiple hostnames with a single declaration.
  1. Configuration
    1. SSH

Configuration

Programs that support local technology use environment variables to determine the conventions to use for date and time formatting, character display, currency display and codepage selection.

The following environment variables affect locale related behaviour of the system:

LANG

Determines the default locale in the absence of other locale related environment variables

List of fallback message translation languages (GNU only)

LC_ADDRESS

Convention used for formatting of street or postal addresses

LC_ALL

Overrides all other locale variables (except LANGUAGE)

LC_COLLATE

Collation order

LC_CTYPE

Character classification and case conversion

LC_MONETARY

Monetary formatting

LC_MEASUREMENT

Default measurement system used within the region

LC_MESSAGES

Format of interactive words and responses

LC_NUMERIC

Numeric formatting

LC_PAPER

Default paper size for region

LC_RESPONSE

Determines how responses (such as Yes and No) appear in the local language

LC_TELEPHONE

Conventions used for representation of telephone numbers

LC_TIME

Date and time formats

Warning!

Using LC_ALL is strongly discouraged as it overrides everything. Please use it only when testing and never set it in a startup file.

Ssh Config Addkeystoagent

Normally how it works is you set LANG to your preferred locale. If there are specific aspects of your primary locale that you don't like (e.g. date formats), then you set the specific variables to override those features only. End users should never set LC_ALL, at least not permanently. LC_ALL is reserved for programs or situations where you need to enforce a specific locale (usually 'C') on a temporary basis. One example of this would be reporting error messages on an English-speaking mailing list; you can use LC_ALL=C your command to ensure that the errors are in English, and follow all the POSIX norms.

Standard

Get root and type dpkg-reconfigure locales and select the locale(s) you want to generate. At the end, you'll be asked which one should be the default. If you have users who access the system through ssh, it is recommended that you choose None as your default locale.

This changes /etc/default/locale and /etc/locale.gen (in older versions of Debian, also /etc/environment). If you chose a default locale other than None above, it will be in /etc/default/locale and will override the LANG variable supplied by ssh. This is highly inconvenient.

If you've upgraded to Lenny from an older version of Debian and have leftover LANG=... content in /etc/environment, you should comment it out (type editor /etc/environment and put a # character in front of the line, and then save it).

Linux Ssh Settings

Now, optionally, edit /etc/profile as follows:

  • Run locale -a to get a list of the locale names suitable for use in environment variables. Note that the spellings are different from the ones presented in the dpkg-reconfigure list.

  • Add a line like this to your /etc/profile file:

    where de_DE.iso88591 is the locale you want to use as a default. If you have tcsh or csh users, create a file named /etc/csh/login.d/lang with the following content:

    This will only set LANG if it was not previously defined, for example by ssh. Unfortunately, this won't affect users who login with xdm, gdm, etc.

SSH

SSH Server

If you've upgraded from a very old version of Debian (before Etch), your sshd_config(5) may not contain the correct AcceptEnv directive to let the ssh client pass locale variables. Edit your /etc/ssh/sshd_config file and make sure it contains this line:

Then restart the ssh service to make it take effect. Also, you should log out of your current ssh connection and log back in. Already-running programs will not be affected.

SSH Client

If you've upgraded from a very old version of Debian (before Etch), your ssh_config(5) may not contain the correct SendEnv directive to let the ssh client pass locale variables. Edit your /etc/ssh/ssh_config file and make sure it contains this line:

You should log out current ssh connection and log back in. Already-running session will not be affected.

GDM

Ssh Settings Windows

In GDM login screen, pick a proper locale from the list of installed locales by clicking the locale button in the bottom of the screen.

Alternatively, edit ~/.dmrc. For example, to set the user-wide locale to en_DK.utf8, ~/.dmrc could be something like this:

Manually

  • Edit the file /etc/locale.gen and add your locale settings (one set per line), e.g.:

    The supported locales are listed in /usr/share/i18n/SUPPORTED.

  • Run the command locale-gen

  • Run the command locale -a to verify the list of available locales; note that the spellings change.

  • If you've upgraded to Lenny and you have leftover LANG=... content in /etc/environment, you should comment it out.

  • To use the new settings with your programs, log out and back in.

First day of week

You might want to use the default en_US locale because some software doesn't play nice when locale's set to something else, but you want to have the first day of the week set to Monday, not to Sunday, like it's defined in en_US. To get this desired behaviour you can add the following to /etc/default/locale:

Measuring units and paper size

You might also want to change the measuring units and the paper size if you're from Europe:

Keyboard layout

See: debian-reference.

See Also

Ssh
  • ReduceDebian - Reducing the number of installed locales

CategorySystemAdministration