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--- notes:lpic-1_notes [2026/09/15 06:07]
216.73.216.243 old revision restored (2026/09/14 10:42)
+++ notes:lpic-1_notes [2026/09/16 10:35] (current)
216.73.216.94 old revision restored (2026/09/14 06:10)
@@ Line 120: / Line 120: @@
   * Interact with the boot loader
   * Terms: /boot/grub/menu.lst, grub.cfg and other variations, grub-install, MBR, superblock
-==Notes==
-  * BIOS looks for and runs boot loader from first specified boot device.
-  * Boot loader find and loads specified kernel (with specified kernel options) which loads required modules and starts system processes.
-  * LILO is a 2-stage program
-    * First stage is in 512-byte MBR or in the boot sector of a partition (if it is a secondary boot loader).
-    * Second stage is in /boot/boot.b .
-    * Map file locating kernel is in /boot/map
-    * //lilo// command reads /etc/lilo.conf which contains kernel image locations, kernel options, the default boot disk etc. It encodes this information along with physical disk information and writes it into the boot files (MBR/boot-sector, boot.b and map).
-  * GRUB is a multi-stage boot loader, more flexible than LILO.
-    * Changes take effect immediately.
-    * (hd0,1) -> 2nd partition on the 1st hard disk. Refers only to the order of the disks as seen by the BIOS so order may change if BIOS boot order is changed.
-    * //grub-install// writes to MBR/boot sector. Uses/boot/grub/device.map to map BIOS drives to Linux devices e.g. "(hd0)   /dev/sda".
-    * Grub command-line expects a specific order of commands to boot kernel <code>grub> root (hd0,0)
-grub> kernel /vmlinuz-2.4.18-14 ro root=/dev/hda2
-grub> initrd /initrd-2.4.18-14.img  [optional]
-grub> boot</code>
 === 102.3 Manage shared libraries (LCN-5 CTL-2) ===
@@ Line 143: / Line 126: @@
   * Load shared libraries
   * Terms: ldd, ldconfig, /etc/ld.so.conf, LD_LIBRARY_PATH
-==Notes==
-  * Most programs on Linux use common system libraries.
-  * These can be statically linked into the program at compile-time - more disk, more memory, slower.
-  * Or can be dynamically loaded at runtime (shared libraries) - shared memory, smaller disksize, faster.
-  * //ldd// can be used to display required shared libraries for an executable
-  * Dynamically linked executables are examined at runtime by the shared object dynamic linker, //ld.so//
-  * //ldconfig// reloads shared library paths from /etc/ld.so.conf to update binary cache /etc/ld.so.cache
-  * $LD_LIBRARY_PATH env variable can also be used
 === 102.4 Use Debian package management (LCN-5 CTL-2) ===
@@ Line 158: / Line 132: @@
   * Obtain package information like version, content, dependencies, package integrity and installation status (whether or not the package is installed)
   * Terms: /etc/apt/sources.list, dpkg, dpkg-reconfigure, apt-get, apt-cache, aptitude
-==Notes==
-  * .deb package names - pkgname_version-revision_arch.deb . version is typically major.minor.patchlevel e.g ncurses4_4.2.3-9_i386.deb
-  * //dpkg// operates directly on //.deb// packages
-    * uses /var/lib/dpkg/[available|status] files to store metadata
-    * -i=install -r=remove --purge=purge
-    * -E=do not overwrite with same version or older
-    * -G=do not overwrite with older package version
-    * -l=list matching installed packages -L=list files from package
-    * -s=status of package -S=search for file in installed packages
-  * //apt-get// uses package names and sources and resolves dependencies
-    * -d=download only -s=simulate -y=assume yes
-    * install, remove, update (sources), upgrade (all packages), dist-upgrade (to new OS version)
-    * uses /etc/apt/sources.list. Lines look like <code> deb http://http.us.debian.org/debian stable main contrib non-free</code>
-  * //dselect// is a menu-based interface to //dpkg//
-  * //alien// converts other package types to .deb packages (or to rpm with -r) e.g. Slackware/generic tarball, RPM . //alien -i x.rpm//
 === 102.5 Use RPM and YUM package management (LCN-5 CTL-2) ===

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