Linux

GPG Key Trust

by dervish on Sep.17, 2012, under Linux

When importing a public key onto another machine, you may have configure gpg to trust the key. Otherwise, when you use the key to do encryption, you may see a prompt like this:


	It is NOT certain that the key belongs to the person named

	in the user ID.  If you *really* know what you are doing,

	you may answer the next question with yes.
	Use this key anyway? (y/N) 
To trust the key, run:

	gpg --edit-key NAME
GPG will output some information, and show a line like:

	trust: undefined     validity: unknown
You will be at a console, and you have to type "trust":

	Command> trust

	Please decide how far you trust this user to correctly verify other users' keys

	(by looking at passports, checking fingerprints from different sources, etc.)
	  1 = I don't know or won't say

	  2 = I do NOT trust

	  3 = I trust marginally

	  4 = I trust fully

	  5 = I trust ultimately

	  m = back to the main menu
	Your decision? 5

	Do you really want to set this key to ultimate trust? (y/N) y

Type "quit" to quit. If you run gpg --edit-key NAME again, you will see a line as below, which means the key is now trusted. trust: ultimate validity: ultimate

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Missing insserv

by dervish on Aug.20, 2012, under Linux, Ubuntu

# chkconfig saned off
/sbin/insserv: No such file or directory

# chkconfig webmin off
/sbin/insserv: No such file or directory

# ln -s /usr/lib/insserv/insserv /sbin/insserv

# chkconfig saned off
#

I <3 Ubuntu

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error: Could not load ssh_host_ecdsa_key

by dervish on Aug.20, 2012, under Linux, Ubuntu

Error in log:
error: Could not load host key: /etc/ssh/ssh_host_ecdsa_key

Fix:
sudo ssh-keygen -t ecdsa -f /etc/ssh/ssh_host_ecdsa_key -N ”

The ecdsa SSH key in not being generated by default.

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Change Default Text Editor in Linux Mint/Ubuntu

by dervish on Aug.03, 2012, under Linux, Ubuntu

Command:
$ sudo update-alternatives --config editor


There are 3 choices for the alternative editor (providing /usr/bin/editor).
  Selection    Path               Priority   Status

------------------------------------------------------------

* 0            /bin/nano           40        auto mode

  1            /bin/ed            -100       manual mode

  2            /bin/nano           40        manual mode

  3            /usr/bin/vim.tiny   10        manual mode

Press enter to keep the current choice[*], or type selection number: 3 update-alternatives: using /usr/bin/vim.tiny to provide /usr/bin/editor (editor) in manual mode.

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No support for locale: en_US.utf8

by dervish on Jun.18, 2012, under Linux, Ubuntu

Error:
update-initramfs: Generating /boot/initrd.img-3.0.0-12-generic
Warning: No support for locale: en_US.utf8

Issue:
The problem is that /usr/share/initramfs-tools/hooks/root_locale is expecting to see individual locale directories in /usr/lib/locale, but locale-gen is configured to generate an archive file by default.

Fix:
# locale-gen --purge --no-archive Generating locales... en_AG.UTF-8... done en_AU.UTF-8... done en_BW.UTF-8... done en_CA.UTF-8... done en_DK.UTF-8... done en_GB.UTF-8... done en_HK.UTF-8... done en_IE.UTF-8... done en_IN.UTF-8... done en_NG.UTF-8... done en_NZ.UTF-8... done en_PH.UTF-8... done en_SG.UTF-8... done en_US.UTF-8... done en_ZA.UTF-8... done en_ZM.UTF-8... done en_ZW.UTF-8... done Generation complete.

or

# dpkg-reconfigure locales Generating locales... en_AG.UTF-8... done en_AU.UTF-8... done en_BW.UTF-8... done en_CA.UTF-8... done en_DK.UTF-8... done en_GB.UTF-8... done en_HK.UTF-8... done en_IE.UTF-8... done en_IN.UTF-8... done en_NG.UTF-8... done en_NZ.UTF-8... done en_PH.UTF-8... done en_SG.UTF-8... done en_US.UTF-8... up-to-date en_ZA.UTF-8... done en_ZM.UTF-8... done en_ZW.UTF-8... done Generation complete.