I just noticed during scripting that it's very hard to ensure that a snap is installed and refreshed if already installed because snap install fails if the snap is already installed and snap refresh fails if the snap is not installed yet. Am I missing some option listed or not listed in the --help of either command?
I know how to script this with snap list or even rudimentary with || in bash (missing a ton of error cases). But there has to be an option, right?
I'm using Ubuntu 23.10.
I'd like to search multiple packages at one using a regexp connecting pattern with logical or |.
Assuming the two files /usr/lib/apache2/modules/httpd.exp and /usr/lib/apt/apt.systemd.daily exist:
$ sudo dpkg -S /usr/lib/apache2/modules/httpd.exp
apache2-bin: /usr/lib/apache2/modules/httpd.exp
$ sudo dpkg -S /usr/lib/apt/apt.systemd.daily
apt: /usr/lib/apt/apt.systemd.daily
why does apt-file search --regexp '/usr/lib/apache2/modules/httpd.exp|/usr/lib/apt/apt.systemd.daily' only return
apache2-bin: /usr/lib/apache2/modules/httpd.exp
The solution is intended to be used for an optimization of the GNOME build tool jhbuild. It should work an a large set of Ubuntu versions.
How to list all available versions of a snap which is not installed?
I'm using Ubuntu 19.04 with snap 2.39.3.
There's information how to enable the dashboard extension
microk8s.enable dashboard
(which I ran) and how to display URLs of other extensions enabled like this:
kubectl cluster-info
How to get the URL of the dashboard of a microk8s installation running locally on Ubuntu 18.10?
The building of tarball releases of GNU m4 1.4.10 to 1.4.18 (didn't test all hotfix versions, but I assume the error is consistent among this range) with ./configure && make -j1 and git git repository http://git.savannah.gnu.org/r/m4.git with ./bootstrap && ./configure && make -j1 (commit cvs-readonly-359-gd69fa528 i.e. HEAD of master) fails due to
freadahead.c: In function 'freadahead':
freadahead.c:92:3: error: #error "Please port gnulib freadahead.c to your platform! Look at the definition of fflush, fread, ungetc on your system, then report this to bug-gnulib."
#error "Please port gnulib freadahead.c to your platform! Look at the definition of fflush, fread, ungetc on your system, then report this to bug-gnulib."
^~~~~
make[3]: *** [Makefile:1910: freadahead.o] Error 1
make[3]: Leaving directory '/mnt/data/sources/m4-1.4.18/lib'
I'm very confused by this error and according to a superficial google search the problem is the consequence of an overly long ignored upstream update, see e.g. https://bugzilla.redhat.com/show_bug.cgi?id=1573342 with the genius documentation of the fix "Thanks for the bug report, fixed!" - if that doesn't help others...
I tried to build glibc from source and install it into a custom prefix[1]. 2.28 and 2.27 exhibit the same issue and 2.26 fails due to
make[2]: Verzeichnis „/mnt/data/sources/glibc-2.26/inet“ wird betreten
gcc ../sysdeps/unix/sysv/linux/if_index.c -c -std=gnu11 -fgnu89-inline -O2 -Wall -Werror -Wundef -Wwrite-strings -fmerge-all-constants -fno-stack-protector -frounding-math -g -Wstrict-prototypes -Wold-style-definition -ftls-model=initial-exec -U_FORTIFY_SOURCE -I../include -I/mnt/data/sources/glibc-2.26-build/inet -I/mnt/data/sources/glibc-2.26-build -I../sysdeps/unix/sysv/linux/x86_64/64 -I../sysdeps/unix/sysv/linux/x86_64 -I../sysdeps/unix/sysv/linux/x86 -I../sysdeps/x86/nptl -I../sysdeps/unix/sysv/linux/wordsize-64 -I../sysdeps/x86_64/nptl -I../sysdeps/unix/sysv/linux/include -I../sysdeps/unix/sysv/linux -I../sysdeps/nptl -I../sysdeps/pthread -I../sysdeps/gnu -I../sysdeps/unix/inet -I../sysdeps/unix/sysv -I../sysdeps/unix/x86_64 -I../sysdeps/unix -I../sysdeps/posix -I../sysdeps/x86_64/64 -I../sysdeps/x86_64/fpu/multiarch -I../sysdeps/x86_64/fpu -I../sysdeps/x86/fpu/include -I../sysdeps/x86/fpu -I../sysdeps/x86_64/multiarch -I../sysdeps/x86_64 -I../sysdeps/x86 -I../sysdeps/ieee754/float128 -I../sysdeps/ieee754/ldbl-96/include -I../sysdeps/ieee754/ldbl-96 -I../sysdeps/ieee754/dbl-64/wordsize-64 -I../sysdeps/ieee754/dbl-64 -I../sysdeps/ieee754/flt-32 -I../sysdeps/wordsize-64 -I../sysdeps/ieee754 -I../sysdeps/generic -I.. -I../libio -I. -D_LIBC_REENTRANT -include /mnt/data/sources/glibc-2.26-build/libc-modules.h -DMODULE_NAME=libc -include ../include/libc-symbols.h -DPIC -DTOP_NAMESPACE=glibc -o /mnt/data/sources/glibc-2.26-build/inet/if_index.o -MD -MP -MF /mnt/data/sources/glibc-2.26-build/inet/if_index.o.dt -MT /mnt/data/sources/glibc-2.26-build/inet/if_index.o
../sysdeps/unix/sysv/linux/if_index.c: In function ‘__if_nametoindex’:
../sysdeps/unix/sysv/linux/if_index.c:46:3: error: ‘strncpy’ specified bound 16 equals destination size [-Werror=stringop-truncation]
strncpy (ifr.ifr_name, ifname, sizeof (ifr.ifr_name));
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
cc1: all warnings being treated as errors
make[2]: *** [/mnt/data/sources/glibc-2.26-build/sysd-rules:213: /mnt/data/sources/glibc-2.26-build/inet/if_index.o] Fehler 1
make[2]: Verzeichnis „/mnt/data/sources/glibc-2.26/inet“ wird verlassen
make[1]: *** [Makefile:215: inet/subdir_lib] Fehler 2
make[1]: Verzeichnis „/mnt/data/sources/glibc-2.26“ wird verlassen
make: *** [Makefile:9: all] Fehler 2
and 2.25 due to
strftime_l.c: In function ‘__strftime_internal’:
strftime_l.c:719:4: error: macro expands to multiple statements [-Werror=multistatement-macros]
digits = d > width ? d : width; \
^~~~~~
strftime_l.c:1260:6: note: in expansion of macro ‘DO_NUMBER’
DO_NUMBER (1, tp->tm_year + TM_YEAR_BASE);
^~~~~~~~~
strftime_l.c:1259:4: note: some parts of macro expansion are not guarded by this ‘else’ clause
else
^~~~
In file included from wcsftime_l.c:23:
strftime_l.c: In function ‘__strftime_internal’:
strftime_l.c:719:4: error: macro expands to multiple statements [-Werror=multistatement-macros]
digits = d > width ? d : width; \
^~~~~~
strftime_l.c:1260:6: note: in expansion of macro ‘DO_NUMBER’
DO_NUMBER (1, tp->tm_year + TM_YEAR_BASE);
^~~~~~~~~
strftime_l.c:1259:4: note: some parts of macro expansion are not guarded by this ‘else’ clause
else
^~~~
cc1: all warnings being treated as errors
make[2]: *** [../o-iterator.mk:9: /mnt/data/sources/glibc-2.25-build/time/strftime_l.os] Fehler 1
which made me decide to not try out further version.
[The discussion on a report about a similar issue in findutils] suggests to overwrite freadahead.{c,h} from an up-to-date gnulib source root. This causes a chain of problems which is unnecessary to document here as I don't know what I'm doing.
How to get started with fixing, reporting and/or working around this issue?
I'm building m4 from source for a bootstrap script for systems where a user doesn't have privileges to use the package manager. I'm really just interested in building the original GNU m4 from release source tarballs.
An overview of build results on other similarily bare systems is provided at https://gitlab.com/krichter/m4/pipelines/36977411.
[1] In case you're investigating this always install glibc into a custom prefix because an installation in the default prefix /usr/local will most certainly ruine your system. Consider using checkinstall to be sure.
I reported https://bugs.launchpad.net/ubuntu/+source/grub2-signed/+bug/1800340 which (as so often) didn't get any feedback, so I reported it upstream at https://savannah.gnu.org/bugs/?func=detailitem&item_id=55005 and want to register the upstream issue in Launchpad. Unfortunately, the URL isn't recognized which seems to be an issue with different forms of URLs provided by GNU Savannah (details in the link) and furthermore a triaged bug in a contribution tool for 10 years.
Since in my experience (of reporting hundreds of bugs and spending hundreds of hours with similar problems and hearing of hundreds of people suffering from them) the change of getting these bugs fixed is zero, so I'd like to work around this one: Can I transform the upstream bug URL into one which is accepted by Launchpad? Does anyone has a list of URL forms for accepted GNU Savannah reports which can be collected here and linked in the report to allow others to work around the frustration this kind of issue handling causes for non-full-time Ubuntu contributors?
I'd like be able to establish a connection to a headless Ubuntu 18.04 server from a Ubuntu 18.04 laptop via serial console in order to avoid having a graphic card consuming energy in the server.
The motherboard is an ASRock X99 Extreme3. Its UEFI has an option to enable/disable the serial port which I set to enable - smart as I am - and to select 3F8h/IRQ4 or 3E8h/IRQ4 for the "Serial Port Address" where I left the initially selected 3F8h/IRQ4 without knowing what the values stand for.
On the server, I connected a RS232 to D-Sub connector (DB9) to the serial port of the motherboard and plugged in a gender changer. It translates
------------- -----------
\ 5 4 3 2 1 / to / 5 4 3 2 1 \
\ 9 8 7 6 / / 9 8 7 6 \
--------- ---------------
The laptop doesn't have a serial port, so I use a Serial-USB adapter which causes
[ 4303.030466] pl2303 3-1.1:1.0: pl2303 converter detected
[ 4303.031471] usb 3-1.1: pl2303 converter now attached to ttyUSB0
to be printed in dmesg after it's plugged-in.
On the server side the output of dmesg | grep tty is
[ 0.218803] printk: console [tty0] enabled
[ 2.079815] 00:03: ttyS0 at I/O 0x3f8 (irq = 4, base_baud = 115200) is a 16550A
I read about the possibility to specify a serial console to GRUB and related kernel parameters, however I don't find any clear statement whether that's necessary or not to be able to connect after the system booted (I don't need to be able to connect to GRUB's console for now).
When I try to connect to the server using
sudo minicom -D /dev/ttyUSB0
or putty, I see
CTRL-A Z for help | 115200 8N1 | NOR | Minicom 2.7.1 | VT102 | Offline | ttyUSB0
in the footer for the former and both terminals don't take any input. I payed attention to match the device file to connect to with the one printed in dmesg.
I'm suspicious that I don't have to install or configure anything on the server side except turning on the serial port in the UEFI. Can that be correct?
Maybe the BAUD rate isn't negotiated automatically and needs to be configured, but I have no idea how to figure out the correct value. I ran the configuration for minicom, but could only select default values because I don't find a good explanations - in all tutorials the connection just magically works after minicom -s apparently. Maybe the connection works and I'm missing the final step to connect.
I added the desktop user account and root to the groups dialout and uucp.
I can provide all necessary information for both server and laptop.
The package maven depends on default-jre-headless (>= 2:1.7) | java7-runtime-headless (according to sudo dpkg -I /var/cache/apt/archives/maven_3.5.2-2_all.deb). I noticed the following behavior on Ubuntu 18.04 running inside Docker (image docker:18.04):
apt-get update && apt-get install --yes openjdk-8-jdk
apt-get install --yes maven
install OpenJDK 8 JDK (including JRE) and then only Maven because a JRE is already provided. However both
apt-get update && apt-get install --yes maven openjdk-8-jdk
and
apt-get update && apt-get install --yes openjdk-8-jdk maven
cause OpenJDK 11 JRE to be installed because it's the default JRE. Why does apt-get install not scan the package list to check whether dependencies are provided? I'll go so far and say that apt-get usually does that, even though I find no info about it.
One overview of the command and results (with a project which requires JDK 8 through the maven-enforcer-plugin) is provided at https://gitlab.com/krichter/maven-enforcer-plugin-docker/pipelines/26241321. I have no reason to believe that the behavior on my desktop Ubuntu 18.04 is different.
I'm looking for an explanation of the described scenario and maybe a hint to a configuration which adapt the package list parsing. This is not a problem for me and I need no workaround.
In my opinion this behavior is sub-optimal since it's more intuitive that the explicit specification of a package fulfilling a dependency of a package in the same list overrides the need to install an implicit default. If you'd want both OpenJDK 8 and 11 installed you'd specify both in the package list. Maybe someone else had this idea and filed an enhancement request (probably to Debian rather than Ubuntu). I'd the happy about the link.
I don't seem to find any information where to report issues with snaps, i.e. applications which are installed through snap install instead of the system package manager apt-get.
Since most bug reports on launchpad.net are simply ignored, but still make sense to be filed, I'd like to make sure that I'm not doing something even more hopeless when filing bugs with ubuntu-bug or manually on launchpad.net.
The fact that apport says that a package isn't installed shouldn't say too much because it usually takes years until this tool is upgraded to reflect changes in the requirements.
I created a VirtualBox VM FreeBSD-11.1-amd64 with /usr/lib/virtualbox/VBoxManage createvm --name FreeBSD-11.1-amd64 which was successful according to the output
Virtual machine 'FreeBSD-11.1-amd64' is created.
UUID: c71b2a99-6d87-460e-98ab-6baa2db94e54
Settings file: '/root/VirtualBox VMs/FreeBSD-11.1-amd64/FreeBSD-11.1-amd64.vbox'
However /usr/lib/virtualbox/VBoxManage list vms's output is empty, but running the creation command above again fails because the VM already exists.
Afaik this only makes sense if the created VM was a cat.
I'm working inside a headless docker instance of ubuntu:artful on Ubuntu 17.10.
I'm running
clamscan -r --infected --heuristic-scan-precedence=yes --detect-pua=yes --detect-structured=no
and am getting some results like PUA.Html.Trojan.Agent-37075 FOUND. Now, I don't find any instructions
how to evaluate this result, i.e. which workflow has to be processed. Is every result to be removed immediately? Where are documentations of the results? Are there different documentations for different result types?
I'm using clamav 0.99+dfsg-1ubuntu1 on Ubuntu 16.04.
In a long line in systemctl status it's necessary to scroll horizontally which makes it quite hard to copy the output. Is there a way to get linebreaks at the end of terminal (like nano -$ would do)?
I'm not looking for a workaround like redirecting the output into a temporary file and displaying it with an editor which supports the output.
I'm using Ubuntu 15.10.
Some programs require tab characters to work, e.g. make requires tabs in Makefiles. If gedit is configured to replace tabs with spaces, it's painful to change the settings every time or copy a character from another document.
I'm using 3.10.4 on Ubuntu 15.04.
I want to specify an Environment systemd directive containing =, e.g.
Environment=CATALINA_OPTS=-Dappserver.home=/var/lib/archiva/apache-tomcat-current -Dappserver.base=/var/lib/archiva/apache-tomcat-current
and get the error
[/lib/systemd/system/archiva.service:10] Invalid environment assignment, ignoring: CATALINA_OPTS=-Dappserver.home\=/var/lib/archiva/apache
in journalctl -xe. I tried to quote with " and ' and to escape = with \ without success. This seems undocumented.
I wrote an upstart service following the Ubuntu wiki article and created a .conf file in /etc/init/. There're no instructions on how to proceed to make the script available in initctl list and for upstart management commands, like start and service. The official upstart cookbook doesn't explain this matter.
The start fails with
$ start archiva
start: Unknown job: archiva
$ service archiva start
archiva: unrecognized service
I just saw v3.16.7-ckt1-utopic on http://kernel.ubuntu.com/~kernel-ppa/mainline/?C=N;O=D and found a related anouncement promising information about -ckt kernels in the
ExtendedStable kernel article of the Ubuntu wiki. I don't find any mention of what a -ckt kernel is (substring isn't contained in the wiki article) except if the reference from the announcement means that -ckt is an extended-stable-kernel (feels like too many corners to think around to make the connection to the suffix). Why would v3.16.7-ckt1-utopic be the only -ckt kernel then?
What does -ckt in the version mean?
Until some time ago there's been a button labeled "affects me too" which one could press. The last time I saw it might be some months ago and I didn't check inbetween. I no longer see it, e.g. for https://bugs.launchpad.net/bugs/919801. Is it gone? If yes, why?
I'm experiencing replacement of all occurrences of certain characters in the prompt and output of gnome-terminal (3.6.2 in Ubuntu 14.04), e.g.
(latin d is replaced with some kind of uppercase D in exponent and some other pixels below).
reset and clear don't help. Copying the output/prompt returns the character sequence without replacements. What could cause this?
The default setting of vlc is to skip x seconds when forwarding/rewinding based on the video length (there's also the possibility to make small steps (hotkey for that is configurable)). How can I set the steps to be a seconds long with a depending on the video length? Can I overwrite the default forward/rewind hotkeys (mouse wheel up/down when hovering over progress bar without pressing further keys) to consider this setting?
Is there any way to export stored secrets from seahorse 3.8.2 (running on Ubuntu 13.10) (not public keys) in order to import them (directly or after a transformation) into a keepass2 database? I researched for some time now without a result (neither positive nor negative).