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buildd is the abbreviation of“build daemon”. This program automatically recompiles new versions of Debian packages on the architectures on which it is hosted (cross-compiling not always being sufficient) .. One of the most important aspects in the configuration of APT is the management of the priorities associated with each package source. For instance, you might want to extend one distribution with one or two newer packages from Testing, Unstable or Experimental. It is possible to assign a priority to each available package (the same package can have several priorities depending on its version or the distribution providing it). These priorities will influence APT’s behavior: for each package, it will always select the version with the highest priority (except if this version is older than the installed one and if its priority is less than 1000)..          […]. finally, when the searches involve complex expressions with logic operations, the tool of choice will beaptitude’s search pattern syntax, which is quite powerful despite being somewhat obscure; it works in both the command-line and the interactive modes.. The elements of this chapter are a means of effectively resolving issues that the following chapters may bring about. Use them as often as necessary!. This last incarnation of a super-server offers very interesting possibilities. Most notably, its configuration can be split into several files (stored, of course, in the /etc/xinetd.d/ directory), which can make an administrator’s life easier.. > END. To automatically setup a quota for new users, you have to configure a template user (withedquota orsetquota) and indicate their user name in the QUOTAUSER variable in the /etc/adduser.conf file. This quota configuration will then be automatically applied to each new user created with theadduser command.. # TAG: localip. iptables -t mangle -A PREROUTING -p tcp –dport ssh -j TOS –set-tos Minimize-Delay. # LDAPv3. The sda5 and sdc5 partitions, as well as sda6 and sdc6, are assembled into two new RAID-1 volumes of about 100 GB

each, md1 and md2. Both these mirrors are initialized as physical volumes for LVM, and assigned to the vg_raid volume group. This VG thus contains about 200 GB of safe space.. Prelude brings centralized monitoring of security information. Its modular architecture includes a server (themanager in prelude-manager) which gathers alerts generated bysensors of various types.. Theid command displays the identity of the user running the session, along with the list of groups they belong to. Since access to some files or devices may be limited to group members, checking available group membership may be useful.. Unix-like kernels (including Linux), and like most other modern operating systems, are able of“multi-tasking”. In other words, they allow running many processes “at the same time”. There’s actually only one running process at any one time, but the kernel cuts time into small slices and runs each process in turn. Since these time slices are very short (in the millisecond range), theycreate the illusion of processes running in parallel, although they’re actually only active during some time intervals and idle the rest of the time. The kernel’s job is to adjust its scheduling mechanisms to keep that illusion, while maximizing the global system performance. If the time slices aretoo long, the application may lack in snappiness and user interactivity. Too short, and the system loses time switching tasks too frequently. These decisions can be tweaked with process priorities. High-priority processes will run for longer and more frequent time slices than low-priority processes..

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