Ubuntu
Ubuntu Missing Swap
by dervish on Dec.13, 2014, under Linux, Ubuntu
Fix missing swap on Ubuntu derivatives when using encrypted home directories:
$ swapon -s
Filename Type Size Used Priority
$ free
total used free shared buffers cached
Mem: 1010504 905892 104612 16964 14460 370292
-/+ buffers/cache: 521140 489364
Swap: 0 0 0
$ sudo -s
# fdisk -l | grep swap
..
Disk /dev/mapper/mint--vg-swap_1: 1069 MB, 1069547520 bytes
..
# mkswap /dev/mapper/mint--vg-swap_1 # copy UUID shown into next cmdline
mkswap: /dev/mapper/mint--vg-swap_1: warning: don't erase bootbits sectors
on whole disk. Use -f to force.
Setting up swapspace version 1, size = 1044476 KiB
no label, UUID=08109738-64e7-4504-8bfd-2dff2011551d
# echo "RESUME=UUID=143c43d8-0a77-4d62-a7ae-f53a8e0229a9" > /etc/initramfs-tools/conf.d/resume
# echo "cryptswap1 /dev/sdb3 /dev/urandom swap,cipher=aes-cbc-essiv:sha256" > /etc/crypttab
# update-initramfs -u
update-initramfs: Generating /boot/initrd.img-3.13.0-24-generic
Warning: No support for locale: en_US.utf8
# swapon -s
Filename Type Size Used Priority
/dev/mapper/mint--vg-swap_1 partition 1044476 316 -1
# free
total used free shared buffers cached
Mem: 1010504 863964 146540 16984 12820 326476
-/+ buffers/cache: 524668 485836
Swap: 1044476 316 1044160
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
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.
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.
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.
