LPIC-1-Exam 101 - Terms and Utilities

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150 terms · This Flashcard set defines all the Terms and Utilities outlined by the LPI for the current LPIC-1-Exam 101.

/sys

virtual file system which stores and allows modification of system connected devices

/proc

virtual file system with text files showing kernel and process status

/dev

contains files that represent devices (device nodes)

modprobe

program to add and remove modules from the Linux Kernel

lsmod

program to show the status of modules in the Linux Kernel

lspci

list all PCI devices

/var/log/messages

system log (On Ubuntu it's /var/log/syslog)

dmesg

print or control the kernel ring buffer

BIOS

Basic Input Output System

bootloader

a program that loads an operating system

kernel

the code between the hardware and applications

/etc/inittab

config file that controls what happens on a restart or when the run levels are force changed

shutdown

bring the system down

init

program that spawns other processes (Replaced with upstart in Ubuntu)

/etc/init.d

where traditional sysvinit scripts and upstart backward compatible scripts reside

telinit

change system runlevel

/ (root) filesystem

base level of the files system directory tree

/var filesystem

location of often changing files (such as database files)

/home filesystem

location of user home directories

swap space

drive space used as slow virtual memory

mount point

directory entry point to other mounted storage volumes

partitions

a logical storage unit

/boot/grub/menu.lst

config file that determines which kernel GRUB boots

grub-install

install GRUB to a device

MBR

Master Boot Record

superblock

file system blocks that contain info like: file system type, status, size, and other info

/etc/lilo.conf

config file for LILO boot loader (alternative to GRUB)

lilo

LInux LOader (boot loader)

ldd

print shared library dependencies

ldconfig

configure dynamic linker run-time bindings

/etc/ld.so.conf

config file that dictates where to search for libraries (colon, space, newline, tab, or comma-separated)

LD_LIBRARY_PATH

: separated list of paths used by the linker to resolve ELF executable dependencies during run-time

/etc/apt/sources.list

list used by Apt to determine where to get package info and packages

dpkg

package manager for Debian

dpkg-reconfigure

reconfigure an already installed package

apt-get

APT package handling utility - - command-line interface

apt-cache

query the APT cache

aptitude

high-level interface to the package manager

rpm

file(s) in the Red Hat Package Manager format

rpm2cpio

converts a RPM package files into a cpio archive

/etc/yum.conf

config file for YUM package manager

/etc/yum.repos.d/

config file that stores all the YUM repositories

yum

Yellowdog Updater Modified package management utility for RPM based systems

yumdownloader

a program for downloading files from YUM repositories

.

represents the current working directory

bash

GNU Bourne-Again SHell

echo

display a line of text

env

run a program in a modified environment

exec

execute a file

export

makes variables available to all child processes of the running shell or script

pwd

print name of current/working directory

set

reads and writes variables

unset

deletes variables

man

an interface to the on-line reference manuals

uname

print system information

history

GNU History Library

cat

concatenate files and print on the standard output

cut

remove sections from each line of files

expand

convert tabs to spaces

fmt

simple optimal text formatter

head

output the first part of files

od

dump files in octal and other formats

join

join lines of two files on a common field

nl

number lines of files

paste

merge lines of files

pr

convert text files for printing

sed

stream editor for filtering and transforming text

sort

sort lines of text files

split

split a file into pieces

tail

output the last part of files

tr

translate or delete characters

unexpand

convert spaces to tabs

uniq

report or omit repeated lines

wc

print newline, word, and byte counts for each file

cp

copy files and directories

find

search for files in a directory hierarchy

mkdir

make directories

mv

move (rename) files

ls

list directory contents

rm

remove files or directories

rmdir

remove empty directories

touch

change file timestamps

tar

The GNU version of the tar archiving utility

cpio

copy files to and from archives

dd

convert and copy a file

file

determine file type

gzip

compress or expand files

gunzip

compress or expand files

bzip2

a block-sorting file compressor

file globbing

use of wildcards (filename generation by the shell)

tee

duplicating pipe content

xargs

build and execute command lines from standard input

&

sends a process to the background

bg

sends a process to the background

fg

sends a process to the foreground

jobs

lists background processes

kill

send a signal to a process

nohup

run a command immune to hangups, with output to a non-tty

ps

report a snapshot of the current processes

top

display Linux tasks

free

Display amount of free and used memory in the system

uptime

Tell how long the system has been running

killall

kill processes by name

nice

run a program with modified scheduling priority

ps

report a snapshot of the current processes

renice

alter priority of running processes

top

display Linux tasks

grep

print lines matching a pattern

egrep

print lines matching a pattern

fgrep

print lines matching a pattern

sed

stream editor for filtering and transforming text

regex(7)

POSIX.2 regular expressions

vi

Vi IMproved, a programmers text editor

/, ?

In vim, / is forward search, ? is backward search

h,j,k,l

In vim command mode, h moves left, j moves down, k moves up, l move right

i, o, a

In vim, i, o a change from command mode to insert mode

c, d, p, y, dd, yy

In vim, c is change command, d is delete command, p is paste after current cursor position, y is yank command, dd is cut the current line, yy is copy the current line

ZZ, :w!, :q!, :e!

In vim, ZZ saves & quits, w! writes changes & overwrites read-only files q! quits w/o saving, e! restarts editing a file with discarded changes

fdisk

manipulate disk partition table

mkfs

build a Linux filesystem

mkswap

set up a Linux swap area

du

estimate file space usage

df

report file system disk space usage

fsck

check and repair a Linux filesystem

e2fsck

check a Linux ext2/ext3/ext4 file system

mke2fs

create an ext2/ext3/ext4 filesystem

debugfs

ext2/ext3/ext4 file system debugger

dumpe2fs

dump ext2/ext3/ext4 filesystem information

tune2fs

adjust tunable filesystem parameters on ext2/ext3/ext4 fil...

xfs tools

xfs filesystem utilites

/etc/fstab

config file containing the file system table

/media

directory containing auto mounted devices

mount

mount a filesystem

umount

unmount file systems

quota

shows disk usage and space permitted for a specific user or group

edquota

edits user file system quotas

repquota

summarizes file system quotas

quotaon

turns file system quotas ON

chmod

change permissions of a file

umask

set file mode creation mask

chown

change ownership of a file

chgrp

change group ownership

ln

make links between files

find

search for files in a directory hierarchy

locate

find files by name

updatedb

update a database for mlocate

whereis

locate the binary, source, and manual page files for a com...

which

locate a command

type

identifies if a command, is a built-in command, an alias, or a command installed in your PC

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