If you set up the Windows Subsystem for Linux on Windows 10, you may find that when you subsequently select Bash on Ubuntu on Windows to obtain a Bash shell prompt, that you see a message indicating that packages need to be updated. E.g.:
106 packages can be updated. 71 updates are security updates. root@ANAHEIM:~#
You can get the updates with apt-get update.
root@ANAHEIM:~# apt-get update Ign http://archive.ubuntu.com trusty InRelease Get:1 http://security.ubuntu.com trusty-security InRelease [65.9 kB] Get:2 http://archive.ubuntu.com trusty-updates InRelease [65.9 kB] Hit http://archive.ubuntu.com trusty-backports InRelease Hit http://archive.ubuntu.com trusty Release.gpg Hit http://archive.ubuntu.com trusty Release Get:3 http://security.ubuntu.com trusty-security/main amd64 Packages [704 kB] Get:4 http://archive.ubuntu.com trusty-updates/main amd64 Packages [1,050 kB] Get:5 http://security.ubuntu.com trusty-security/restricted amd64 Packages [14.1 kB] Get:6 http://security.ubuntu.com trusty-security/universe amd64 Packages [201 kB] Get:7 http://archive.ubuntu.com trusty-updates/restricted amd64 Packages [17.2 kB] Get:8 http://archive.ubuntu.com trusty-updates/universe amd64 Packages [439 kB] Get:9 http://security.ubuntu.com trusty-security/multiverse amd64 Packages [4,803 B] Hit http://security.ubuntu.com trusty-security/main Translation-en Hit http://security.ubuntu.com trusty-security/multiverse Translation-en Hit http://security.ubuntu.com trusty-security/restricted Translation-en Hit http://security.ubuntu.com trusty-security/universe Translation-en Get:10 http://archive.ubuntu.com trusty-updates/multiverse amd64 Packages [14.6 kB] Get:11 http://archive.ubuntu.com trusty-updates/main Translation-en [518 kB] Get:12 http://archive.ubuntu.com trusty-updates/multiverse Translation-en [7,616 B] Get:13 http://archive.ubuntu.com trusty-updates/restricted Translation-en [4,024 B] Get:14 http://archive.ubuntu.com trusty-updates/universe Translation-en [237 kB] Hit http://archive.ubuntu.com trusty-backports/main amd64 Packages Hit http://archive.ubuntu.com trusty-backports/restricted amd64 Packages Hit http://archive.ubuntu.com trusty-backports/universe amd64 Packages Hit http://archive.ubuntu.com trusty-backports/multiverse amd64 Packages Hit http://archive.ubuntu.com trusty-backports/main Translation-en Hit http://archive.ubuntu.com trusty-backports/multiverse Translation-en Hit http://archive.ubuntu.com trusty-backports/restricted Translation-en Hit http://archive.ubuntu.com trusty-backports/universe Translation-en Hit http://archive.ubuntu.com trusty/main amd64 Packages Hit http://archive.ubuntu.com trusty/restricted amd64 Packages Hit http://archive.ubuntu.com trusty/universe amd64 Packages Hit http://archive.ubuntu.com trusty/multiverse amd64 Packages Hit http://archive.ubuntu.com trusty/main Translation-en Hit http://archive.ubuntu.com trusty/multiverse Translation-en Hit http://archive.ubuntu.com trusty/restricted Translation-en Hit http://archive.ubuntu.com trusty/universe Translation-en Ign http://archive.ubuntu.com trusty/main Translation-en_US Ign http://archive.ubuntu.com trusty/multiverse Translation-en_US Ign http://archive.ubuntu.com trusty/restricted Translation-en_US Ign http://archive.ubuntu.com trusty/universe Translation-en_US Fetched 3,343 kB in 12s (276 kB/s) Reading package lists... Done root@ANAHEIM:~#
You can then install the updates with apt-get upgrade. You may
need to respond to a "Do you want to continue?" prompt. If there are a lot of
updated packages to install, be prepared to wait awhile for the upgrade
process to complete.
root@ANAHEIM:~# apt-get upgrade Reading package lists... Done Building dependency tree Reading state information... Done Calculating upgrade... Done The following packages were automatically installed and are no longer required: libfreetype6 os-prober Use 'apt-get autoremove' to remove them. The following packages will be upgraded: apparmor apport bash bind9-host ca-certificates cloud-init curl dbus dnsutils eject initramfs-tools initramfs-tools-bin iproute2 isc-dhcp-client isc-dhcp-common klibc-utils krb5-locales landscape-client landscape-common libapparmor-perl libapparmor1 libasn1-8-heimdal libbind9-90 libc-bin libc6 libcurl3 libcurl3-gnutls libdb5.3 libdbus-1-3 libdns100 libdrm2 libevent-2.0-5 libexpat1 libffi6 libfreetype6 libgc1c2 libgcrypt11 libgnutls-openssl27 libgnutls26 libgssapi-krb5-2 libgssapi3-heimdal libhcrypto4-heimdal libheimbase1-heimdal libheimntlm0-heimdal libhx509-5-heimdal libicu52 libidn11 libisc95 libisccc90 libisccfg90 libk5crypto3 libklibc libkrb5-26-heimdal libkrb5-3 libkrb5support0 libldap-2.4-2 liblwres90 libpam-systemd libpython2.7 libpython2.7-minimal libpython2.7-stdlib libpython3.4-minimal libpython3.4-stdlib libroken18-heimdal librtmp0 libssl1.0.0 libsystemd-daemon0 libsystemd-login0 libtasn1-6 libudev1 libwind0-heimdal libxml2 login logrotate lshw makedev multiarch-support ntpdate openssl overlayroot passwd perl perl-base perl-modules pollinate python2.7 python2.7-minimal python3-apport python3-problem-report python3-software-properties python3-update-manager python3.4 python3.4-minimal resolvconf rsync rsyslog software-properties-common sudo systemd-services tcpdump tzdata udev unattended-upgrades update-manager-core update-notifier-common w3m wget 107 upgraded, 0 newly installed, 0 to remove and 0 not upgraded. Need to get 44.2 MB of archives. After this operation, 493 kB of additional disk space will be used. Do you want to continue? [Y/n] y Get:1 http://archive.ubuntu.com/ubuntu/ trusty-updates/main bash amd64 4.3-7ubuntu1.7 [575 kB] Get:2 http://archive.ubuntu.com/ubuntu/ trusty-updates/main login amd64 1:4.1.5.1-1ubuntu9.5 [302 kB] Get:3 http://archive.ubuntu.com/ubuntu/ trusty-updates/main perl amd64 5.18.2-2ubuntu1.3 [2,656 kB] Get:4 http://archive.ubuntu.com/ubuntu/ trusty-updates/main perl-base amd64 5.18.2-2ubuntu1.3 [1,149 kB] Get:5 http://archive.ubuntu.com/ubuntu/ trusty-updates/main perl-modules all 5.18.2-2ubuntu1.3 [2,699 kB] Get:6 http://archive.ubuntu.com/ubuntu/ trusty-updates/main libc-bin amd64 2.19-0ubuntu6.14 [1,166 kB] Get:7 http://archive.ubuntu.com/ubuntu/ trusty-updates/main libc6 amd64 2.19-0ubuntu6.14 [4,753 kB] Get:8 http://archive.ubuntu.com/ubuntu/ trusty-updates/main libdb5.3 amd64 5.3.28-3ubuntu3.1 [646 kB] Get:9 http://archive.ubuntu.com/ubuntu/ trusty-updates/main libexpat1 amd64 2.1.0-4ubuntu1.4 [70.9 kB] Get:10 http://archive.ubuntu.com/ubuntu/ trusty-updates/main libffi6 amd64 3.1~rc1+r3.0.13-12ubuntu0.2 [17.9 kB] Get:11 http://archive.ubuntu.com/ubuntu/ trusty-updates/main libgcrypt11 amd64 1.5.3-2ubuntu4.5 [238 kB] Get:12 http://archive.ubuntu.com/ubuntu/ trusty-updates/main libtasn1-6 amd64 3.4-3ubuntu0.5 [43.6 kB] Get:13 http://archive.ubuntu.com/ubuntu/ trusty-updates/main libgnutls-openssl27 amd64 2.12.23-12ubuntu2.8 [18.3 kB] Get:14 http://archive.ubuntu.com/ubuntu/ trusty-updates/main libgnutls26 amd64 2.12.23-12ubuntu2.8 [395 kB] Get:15 http://archive.ubuntu.com/ubuntu/ trusty-updates/main python3.4 amd64 3.4.3-1ubuntu1~14.04.6 [178 kB] Get:16 http://archive.ubuntu.com/ubuntu/ trusty-updates/main python3.4-minimal amd64 3.4.3-1ubuntu1~14.04.6 [1,224 kB] Get:17 http://archive.ubuntu.com/ubuntu/ trusty-updates/main libpython3.4-stdlib amd64 3.4.3-1ubuntu1~14.04.6 [1,987 kB] Get:18 http://archive.ubuntu.com/ubuntu/ trusty-updates/main libssl1.0.0 amd64 1.0.1f-1ubuntu2.23 [830 kB] Get:19 http://archive.ubuntu.com/ubuntu/ trusty-updates/main libpython3.4-minimal amd64 3.4.3-1ubuntu1~14.04.6 [460 kB] Get:20 http://archive.ubuntu.com/ubuntu/ trusty-updates/main ntpdate amd64 1:4.2.6.p5+dfsg-3ubuntu2.14.04.12 [57.6 kB] Get:21 http://archive.ubuntu.com/ubuntu/ trusty-updates/main resolvconf all 1.69ubuntu1.3 [55.3 kB] Get:22 http://archive.ubuntu.com/ubuntu/ trusty-updates/main libdbus-1-3 amd64 1.6.18-0ubuntu4.5 [132 kB] Get:23 http://archive.ubuntu.com/ubuntu/ trusty-updates/main libdrm2 amd64 2.4.67-1ubuntu0.14.04.2 [27.2 kB] Get:24 http://archive.ubuntu.com/ubuntu/ trusty-updates/main udev amd64 204-5ubuntu20.25 [736 kB] Get:25 http://archive.ubuntu.com/ubuntu/ trusty-updates/main libudev1 amd64 204-5ubuntu20.25 [34.6 kB] Get:26 http://archive.ubuntu.com/ubuntu/ trusty-updates/main libroken18-heimdal amd64 1.6~git20131207+dfsg-1ubuntu1.2 [39.9 kB] Get:27 http://archive.ubuntu.com/ubuntu/ trusty-updates/main libasn1-8-heimdal amd64 1.6~git20131207+dfsg-1ubuntu1.2 [160 kB] Get:28 http://archive.ubuntu.com/ubuntu/ trusty-updates/main libk5crypto3 amd64 1.12+dfsg-2ubuntu5.3 [79.6 kB] Get:29 http://archive.ubuntu.com/ubuntu/ trusty-updates/main libgssapi-krb5-2 amd64 1.12+dfsg-2ubuntu5.3 [114 kB] Get:30 http://archive.ubuntu.com/ubuntu/ trusty-updates/main libkrb5-3 amd64 1.12+dfsg-2ubuntu5.3 [262 kB] Get:31 http://archive.ubuntu.com/ubuntu/ trusty-updates/main libkrb5support0 amd64 1.12+dfsg-2ubuntu5.3 [30.7 kB] Get:32 http://archive.ubuntu.com/ubuntu/ trusty-updates/main libidn11 amd64 1.28-1ubuntu2.2 [94.6 kB] Get:33 http://archive.ubuntu.com/ubuntu/ trusty-updates/main libhcrypto4-heimdal amd64 1.6~git20131207+dfsg-1ubuntu1.2 [84.1 kB] Get:34 http://archive.ubuntu.com/ubuntu/ trusty-updates/main libheimbase1-heimdal amd64 1.6~git20131207+dfsg-1ubuntu1.2 [29.0 kB] Get:35 http://archive.ubuntu.com/ubuntu/ trusty-updates/main libwind0-heimdal amd64 1.6~git20131207+dfsg-1ubuntu1.2 [47.9 kB] Get:36 http://archive.ubuntu.com/ubuntu/ trusty-updates/main libhx509-5-heimdal amd64 1.6~git20131207+dfsg-1ubuntu1.2 [104 kB] Get:37 http://archive.ubuntu.com/ubuntu/ trusty-updates/main libkrb5-26-heimdal amd64 1.6~git20131207+dfsg-1ubuntu1.2 [196 kB] Get:38 http://archive.ubuntu.com/ubuntu/ trusty-updates/main libheimntlm0-heimdal amd64 1.6~git20131207+dfsg-1ubuntu1.2 [15.2 kB] Get:39 http://archive.ubuntu.com/ubuntu/ trusty-updates/main libgssapi3-heimdal amd64 1.6~git20131207+dfsg-1ubuntu1.2 [89.7 kB] Get:40 http://archive.ubuntu.com/ubuntu/ trusty-updates/main libldap-2.4-2 amd64 2.4.31-1+nmu2ubuntu8.4 [153 kB] Get:41 http://archive.ubuntu.com/ubuntu/ trusty-updates/main librtmp0 amd64 2.4+20121230.gitdf6c518-1ubuntu0.1 [50.4 kB] Get:42 http://archive.ubuntu.com/ubuntu/ trusty-updates/main libcurl3-gnutls amd64 7.35.0-1ubuntu2.13 [166 kB] <text snipped> Setting up landscape-client (14.12-0ubuntu6.14.04.1) ... Installing new version of config file /etc/init.d/landscape-client ... initctl: Unable to connect to Upstart: Failed to connect to socket /com/ubuntu/upstart: Connection refused runlevel:/var/run/utmp: No such file or directory invoke-rc.d: policy-rc.d denied execution of start. Setting up pollinate (4.25-0ubuntu1~14.04.1) ... Setting up unattended-upgrades (0.82.1ubuntu2.5) ... Installing new version of config file /etc/apt/apt.conf.d/50unattended-upgrades ... Setting up python3-software-properties (0.92.37.8) ... Setting up software-properties-common (0.92.37.8) ... Setting up w3m (0.5.3-15ubuntu0.1) ... Setting up cloud-init (0.7.5-0ubuntu1.22) ... Leaving 'diversion of /etc/init/ureadahead.conf to /etc/init/ureadahead.conf.disabled by cloud-init' Setting up overlayroot (0.25ubuntu1.14.04.2) ... Setting up perl-modules (5.18.2-2ubuntu1.3) ... Setting up perl (5.18.2-2ubuntu1.3) ... Processing triggers for libc-bin (2.19-0ubuntu6.14) ... Processing triggers for initramfs-tools (0.103ubuntu4.10) ... Processing triggers for ureadahead (0.100.0-16) ... Processing triggers for ca-certificates (20170717~14.04.1) ... Updating certificates in /etc/ssl/certs... 17 added, 42 removed; done. Running hooks in /etc/ca-certificates/update.d....done. root@ANAHEIM:~#
You should periodically run the commands to ensure the system has the latest security updates and bug fixes.
You can see the current version of the Linux kernel with uname -a
.
root@ANAHEIM:~# uname -a Linux ANAHEIM 4.4.0-43-Microsoft #1-Microsoft Wed Dec 31 14:42:53 PST 2014 x86_64 x86_64 x86_64 GNU/Linux root@ANAHEIM:~#