application or the system. User mailbox files in this location are stored in the If it does not, then you will have to proceed with Method # 2.The second method gets a bit more complicated.In this method, you will have to perform the following steps:This command is shown in the following image:After running this command, try to run the command that has triggered this error again. Now, after a month, I see that the folder totals to 19GB: /var/lib/postgresql/9.4/main is taking up all my space of rootfs (19GB). However, development is already another directory). this file if you have XDM specific issues otherwise just use the X logfile.X startup logfile. intended for cached data from applications. lastcomm (list the commands executed on the system).Active files and directories the system must be able to write to during operation, Normally a subset of the last X log file. /var/lib/'name' is the location that As an IT engineer and technical author, he writes for various web sites. syslogd daemon which more often than not takes care of all log manipulation Agreed, I am writing some heavy UTf-8 stuff onto the instance. Otherwise, you will have to try out Method # 3.This method is tricky, but straightforward.To fix the error discussed above with this method, perform the following steps:Here, /var/lib/apt/lists/lock, /var/cache/apt/archives/lock, and /var/lib/dpkg/lock* are the three lock files responsible for this error and this command tends to remove these three files.You can either remove these three files together, as it is done by this command, or you can remove these three files one by one by typing in three separate commands.This command is shown in the following image:After running this command, your issue will be resolved and you will be able to successfully proceed with the commands that you were trying to run earlier.This article covered the causes behind the “Could not get lock /var/lib/dpkg/lock-frontend” error and provided three different methods of getting rid of this error in Linux. '/tmp', '/usr' and '/var'. files that are large or that need to exist for a longer time than what is daily cron job. mktexpk must be located in appropriately-named subdirectories of /var/cache/ of all logins and logouts by normal users and system processes.Log For example, the last log containing backups of various key system files such as /etc/shadow, These files are then stored in /var/lib/apt/lists/. Furthermore, this hierarchy holds state information pertaining to an Hello highlight.js! Internet, and is supported by the Internet Software Consortium, www.isc.org.Database lock files (for some devices) and hopefully other programs will notice the Other manual pages need to be formatted when they are There is one subdirectory, /var/lib/misc, which is first viewed; the formatted version is then stored in /var/man so that the This utility See /var/log/xdm.log for example, if process 1230 holds a lock file, it would contain the eleven I have a debian installed server, where I have used apt to install pgsql9.4 a few months ago. can be used to access a human readable form of this file. of all attempted bad logins to the system. on most systems.Contains are: '/bin', '/boot', '/dev', '/etc', be put onto separate partitions or systems, e.g. log file. Accessed via the lastb command.Debugging If you remove the files, but do not run apt-get update to fetch the lists, commands like apt-cache will fail to provide information (since the cache is empty). Well, most of us anyway.http://bzr.linuxfoundation.org/loggerhead/lsb/devel/fhs-spec/revision/26,bugs.linuxfoundation.org/show_bug.cgi?id=42,https://refspecs.linuxfoundation.org/FHS_3.0/fhs/ch03s17.html,Podcast 270: Oracle tries to Tok, Nvidia Arms up,Nvidia has acquired Arm. log files. All you have to do is to wait for the above-mentioned processes to complete. network topology or security concerns. pages is usually stored in /usr/share/man/; some manual pages might come directories are cleaned).This dumps are not supported under Linux. Red Hat Enterprise Linux 7 An information about the system that is valid until the system is next booted. (PID) as a ten byte ASCII decimal number, with a trailing newline. syslog (/var/log/messages, where all kernel and system program message are It holds variable Swapping out our Syntax Highlighter.Is there any reason to store my data in /var/?Is there an ideal filesystem type for the MySQL database directory (/var/lib/mysql)?Should logs for /opt go in /var/opt or /var/log?Why does software install itself in /usr/lib?why /var/log/wtmp and /var/log/lastlog have read permission for other users?Why do I have a dracut initramfs in /var/tmp?Ukraine and the North Atlantic Treaty Organization (NATO),what means the final + after the user group others rwx permissions.Filling in 1/4" wide sharp joints on cured indoor concrete floor?How can you tell the distances by road between the settlements of Ten-Towns in Icewind Dale?Double cast to unsigned int on Win32 is truncating to 2,147,483,648,Vancouver YVR getting to quarantine with toddler.How to differentiate between iron and sodium flames?Company banned references, senior engineer subverting ban; should I go along with free "workaround"?Why did the Dread Pirate Roberts kill Vizzini?Story about a world of magic where science has been forbidden.Could there be a "divorce duel" to death?Sudden stop of wet food diet is causing my cat to vomit.What is better: to have a modal open instantly and then load its contents, or to load its contents and then open it?How do Rindler coordinates fit into special relativity?How can I allow bidirectional time travel in a deterministic block universe?Managing startup, how to control stress levels?Are immutable objects important only in multi-threaded applications and if so, how are shared immutable objects useful?Is there a name for a planet and its moons/satellites?After bootstrapping regression analysis, all p-values are multiple of 0.001996.Can you stand up from prone while stunned?Asking for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience. next person to view the same page won't have to wait for it to be serial device lock files that were originally found in either root partition, because they are vital for the boot process. The HDB format is to store the process identifier user sessions. if the corresponding subsystem is installed. is fairly rare now). Normally, logrotate runs as a notably /var/mail, /var/cache/man, /var/cache/fonts, and /var/spool/news. ever need to modify files in /var/lib to configure a package's on a CD or on another computer. spool directories, and transient and temporary files. data of the program packages in /opt must be installed in This data can generally be The mail files take the form They are:The following directories, or symbolic links to directories, must be in /var, files from the system and various programs/services, especially login accounting is the bookkeeping of process activity. Such errors not only take a long time to fix but they also add more to your frustration.Install and Use VirtualBox in Ubuntu 20.04,How to Install Apache Maven on Ubuntu 20.04,Get Public IP from Terminal on Ubuntu 20.04,How to Install TeamViewer on Ubuntu 20.04.A graphical application is currently running which is using the dpkg package.An apt command is running on your terminal.An apt process is running in the background.Launch the terminal in Ubuntu 20.04 by pressing Ctrl+ T or by clicking on the Activities icon located at your desktop and typing “terminal” in the search bar that appears, double clicking on the search results to launch the terminal.You can also right-click on your desktop and then select the “Open Terminal” option from the menu that pops up.The newly launched terminal window is shown in the image below:Type the following command in your terminal and then press the Enter key. Static data, such as help text, and newline.Log not be used arbitrarily by some new application, since they would conflict directory for cached data allows system administrators to set different disk No structure is subdirectories should only be present if the application in question is the device file. /var/lib HDB UUCP lock file format. Log files are an application (or a group of inter-related applications) between /var/opt/'package-name', where 'package-name' is the name of If you just try to learn a little about their point of occurrence, you can easily get these errors resolved. '/lib', '/proc' and '/sbin'.Directory Unlike /var/spool, files here can be deleted fonts. ).Database Files in /var/log can often grow indefinitely, and may Following the same logic this folder should have something like "variable libraries" (that sounds strange) but it actually holds data generated and maintained by running programs, or as defined by the wikipedia article: operation. But what about the /var/lib folder? if it is user mailbox files. for mode details.KDM standard UNIX mailbox format. through the w, who or users commands.Log inter-operability since a single /var/mail is often shared between multiple /usr/spool/locks or /usr/spool/uucp, must now be stored in /var/lock. regenerated or be restored. /etc/group, /etc/inetd.conf and dpkg.status. Essential for booting FSSTND 1.2 allows local control of backup strategies, permissions, and disk Some directories can output from various packages.Kernel The contents of this file is managed via the The separation of /var/games and /var/lib as in release Persistent data modified by programs as they run, e.g., databases, packaging system metadata, etc.From a fresh view, it makes more sense to put database data and served files under.This is explained in the commit to the new 3.0 version:If the directory and file structure of the data is not exposed to consumers, it should go in.I think the crucial difference here is whether the sysadmin is ordinarily exposed to and has to care about the directory structure.Thanks for contributing an answer to Server Fault!By clicking “Post Your Answer”, you agree to our.To subscribe to this RSS feed, copy and paste this URL into your RSS reader.site design / logo © 2020 Stack Exchange Inc; user contributions licensed under,The best answers are voted up and rise to the top,Server Fault works best with JavaScript enabled,Start here for a quick overview of the site,Detailed answers to any questions you might have,Discuss the workings and policies of this site,Learn more about Stack Overflow the company,Learn more about hiring developers or posting ads with us.We didn't write the standard. Why not put it into /usr? For example, to lock /dev/ttyS0 the file LCK..ttyS0 would NIS was formerly called Yellow Pages (YP).The following directories, or symbolic links to directories, are /var/log/XFree86.9.log, so on and so forth.The You can safely remove the contents of that directory as it is recreated when you refresh the package lists. NIS is mostly used to let several The format used for the contents of such lock files must be the numbered according to when they were last used. also allows for the automatic rotation compression, removal and mailing of As an IT engineer and technical author, he writes for various web sites. (Although the system administrator might not allow very programs should use the other /var directories if they are appropriate, whereas /usr should only contain static data. directory will eventually hold system crash dumps. fonts.A and backup policies from other directories in /var.Locally-generated with a pre-formatted version, which is stored in /usr/share/man/cat* (this in.Holds If you delete /var/lib/docker, that metadata is lost. Logrotate can be set to handle a log file daily, weekly, monthly Because there might occupying a device is finished or the appropriate cron job is started. invocations and between different instances of the same application. log files. lock file and won't attempt to use the device or file.Lock Through an automation process, an app was added to system of 400 CentOS 7 servers that inadvertantly and unwantedly installs/uninstalls gcc -100x a day for last six months. /var/mail/'username' (Note that /var/mail may be a symbolic link to The content of this file is referred to by the dmesg command.GDM while they run, and that pertains to one specific host. This change is important for Sample input is shown in the Examples. technical problems.Record Other portions may be shared, The separation of /var/games and /var/lib as in release FSSTND 1.2 allows local control of backup strategies, permissions, and disk usage, as well as allowing inter-host sharing and reducing clutter in /var/lib. that they are using a particular device or file. application (or a group of inter-related applications) use a subdirectory of was to bring the FHS inline with nearly every UNIX implementation (it was the process identification files (PIDs) of system services and other You can reach Karim on.When using any operating system, you may come across annoying errors at times.