How not to pass the locale through an ssh connection command
BashSshBash Problem Overview
I have some aliases for ssh, example:
alias buildWork="ssh work '~/build_app'"
The problem is that the ssh command passes some variables like $LC_CTYPE that causes some errors.
How to prevent that and use the server configurations ?
Bash Solutions
Solution 1 - Bash
It sounds like your SSH client is configured to forward the locale settings. You can prevent this by altering your configuration (the global file is typically /etc/ssh/ssh_config):
# comment out / remove the following line
SendEnv LANG LC_*
Alternatively you can change the configuration of the server, by editing /etc/ssh/sshd_config on the remote machine (note the d in sshd_config):
# comment out / remove the following line
AcceptEnv LANG LC_*
Solution 2 - Bash
As already explained in other answers, the client will send all environment variables specified via SendEnv in /etc/ssh/ssh_config. You can also force ssh to not send already defined variable names, using your user's configuration.
From OpenSSH man page: > It is possible to clear previously set SendEnv variable names by prefixing patterns with -. The default is not to send any environment variables.
So, to prevent sending your locale, you can put the following into your ~/.ssh/config:
SendEnv -LC_* -LANG*
Solution 3 - Bash
In short:
$ touch ~/.ssh/config
$ ssh -F ~/.ssh/config your_user@your_host
See this answer for details.
Solution 4 - Bash
Accepted answer is correct, but, if you don't want to change your config files, you can override specific locale on the command line
LC_TIME="en_US.UTF-8" ssh [email protected]
Solution 5 - Bash
To not send our Local Environment (SendEnv) which is the default behaviour since it is specified in /etc/ssh/ssh_config you have to:
- Create a config file for your user
~/.ssh/config - Add these lines
Host *
SendEnv !LANG !LC_*
- Reload your shell
sudo su - $YourSelf(or logout/login)
a bit of explanation
- ! == means not
- * == means all
so
- !LANG == don't send the variable LANG
- !LC_* == dont send all variable started with LC_
source: https://bugzilla.mindrot.org/show_bug.cgi?id=1285#c8
> Remember that not everyone with this issue will have the power of editing /etc/ssh/ssh_config
Solution 6 - Bash
I was facing the issue that I attributed to ssh passing the locale settings, so I tried with disabling it on client site, then on server site as well (as advised above) and still the locale was complaining after logging in.
Turned out to be a messy locale on the destination server itself, where the setting was taken from /etc/default/locale
I had to clean it completely, run # dpkg-reconfigure locales which fixed the issue.
Solution 7 - Bash
To stop sending Environment Variables via sftp Tested on CENTOS 7
-
create file config in ~/xyzuser/.ssh/config
-
set permission to 600 ~/xyzuser/.ssh/config
-
Put the following content in the file
comment the below lines commented to disable env variables#########
-
Send locale-related environment variables SendEnv LANG LC_CTYPE LC_NUMERIC LC_TIME LC_COLLATE LC_MONETARY SendEnv LC_PAPER LC_NAME LC_ADDRESS LC_TELEPHONE SendEnv LC_IDENTIFICATION LC_ALL LANGUAGE SendEnv XMODIFIERS
Running without the ~/xyzuser/.ssh/config sftp -v xyzuser@destinationhost -------------------truncated output-------- debug1: Requesting [email protected] debug1: Entering interactive session. debug1: Sending environment. debug1: Sending env LANG = en_US.UTF-8 debug1: Sending subsystem: sftp
Running with the ~/xyzuser/.ssh/config
sftp -v -F /home/xyzuser/.ssh/config xyzuser@destinationhost
----truncated----------
debug1: channel 0: new [client-session]
debug1: Requesting no[email protected]
debug1: Entering interactive session.
debug1: Sending subsystem: sftp
Connected to destinationhost