Beard: Created page with "

/etc/issue - kernal info /etc/motd - greeting message for shell /etc/mtab - mounted devices, link of /proc/mounts. fix (rm /etc/mtab;ln -s /proc/mounts /etc/mtab) /etc/pa..."

2016-02-29T21:10:49Z

Created page with "<pre>/etc/issue - kernal info /etc/motd - greeting message for shell /etc/mtab - mounted devices, link of /proc/mounts. fix (rm /etc/mtab;ln -s /proc/mounts /etc/mtab) /etc/pa..."

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<pre>/etc/issue - kernal info
/etc/motd - greeting message for shell
/etc/mtab - mounted devices, link of /proc/mounts. fix (rm /etc/mtab;ln -s /proc/mounts /etc/mtab)
/etc/passwd - users file
/etc/shadow - users hash file (name:password:last-mod:min:max:warn:inactive:expire:flag)
name - login name
password - $1$=md5, $6$=sha512, $2a=blowfish, !=group password not available, *=disabled
last-mod - days since password modified
min - minimum days for password change
max - maximum days for password change
warn - days to warn before password expires
inactive - days after expiration for account to be locked
expire - expiration date in days since 1/1/1970
/etc/profile - script to run when shell is opened
/etc/bashrc - settings for non login shell
/etc/fstab - filesystem config
<device> <mountpoint> <type> <options> 0 0
device examples - "/dev/dsa1" or "UUID=<uuid>" or "LABEL=<label>"
options:
ro - read-only
rw - read/write
dev - interpret special devices on filesystem
nodev - do not interpret devices
exec - allow execute
noexec - do not allow execute
auto - automount
noauto - no automount
user - allow normal users
nouser - root only
guest - allow guest access
exec - allow execute
noexec - no execute
suid - set uid
nosuid - do not set uid
sync - write as copying
async - do not write as copying
defaults - used defaults (rw,suid,dev,exec,auto,nouser,async)
uid=<name or #> - set uid
guid=<name or #> - set guid
username=<name> = username for filesystem
password=<pass> - password
credentials=<file> - give credentials file instead of username and password
format: username=<name>
password=<pass>
/etc/group - group config (group-name:password:group-ID:login-name-list)
/etc/hosts - IP and host name of hosts on the network
/etc/hostname - hostname of the system
/etc/services - services on the system
/etc/aliases - username aliases
/etc/sysconfig/network-scripts/ifcfg-<interface> - interface configurations
DEVICE=<int>
BOOTPROTO=<none/dhcp/bootp>
ONBOOT=<yes/no> - activate on boot
NETWORK=<addr>
IPADDR=<addr>
NETMASK=<mask>
DHCP_HOSTNAME=<name> - only if dhcp server requires it (usually not)
DNS1=<addr>
DNS2=<addr>
GATEWAY=<addr>
MACADDR=<macaddr>
SRCADDR=<addr> - source address for outgoing packets
USERCTL=<yes/no> - yes allows non-root user control
/etc/sysconfig/network - contains network/hostname/domainname directives
NETWORKING=<yes/no>
HOSTNAME=<name or fqdn>
DOMAINNAME=<name>
GATEWAY=<addr>
GATEWAYDEV=<interface> - use if multiple interfaces on same subnet
NISDOMAIN=<name> - NIS domain
/etc/network/interfaces - interface configurations
auto lo
iface lo inet loopback
auto eth0
iface eth0 inet static #or dhcp
address <addr>
netmask <mask>
gateway <gate>
network <addr>
broadcast <addr>
dns-nameservers <addr>
dns-search <domain>
dns-domain <domain>
metric <int> - metric for gateway
hwaddress <mac>
pre-up /path/script
post-down /path/script
/etc/hostname - contains hostname in debian.
run /etc/init.d/hostname.sh sets it. (it runs during boot also).
In red hat, a line "HOSTNAME=name" may be in /etc/sysconfig/network.
Hostname in config files must match entry in /etc/hosts.
/etc/inittab - init configurations and default runlevel
/etc/sudoers - sudoers file
username ALL=(ALL) ALL
%group ALL=(ALL) NOPASSWD: ALL
%group hostname_or_ip=(as_user) OPTION:/bin/command1,/bin/command2 arg,/bin/command3
/etc/cups/printers.conf - printers
/etc/cups/cupsd.conf - cups daemon config
/usr/share/cups/model - directory containing ppd files
/etc/samba/smbusers - smb users
/etc/samba/smbpasswd - smb passwords (sometimes in different location)
/etc/yum.conf - yum configuration
/etc/yum.repos.d/*.repo - files containing repos
/etc/yum/yum-updatesd.conf - yum-updatesd config
/etc/logrotate.conf - logrotate config
/etc/resolv.conf - dns config
/etc/httpd/conf - directory of config files for apache
/etc/named.conf - BIND DNS config
/etc/bind - BIND config folder in Debian
/etc/rndc.key AND /etc/rndc.conf - name authentication for BIND
/etc/vsftpd/vsftpd.conf
/etc/grub.d/05_debian_theme - The WALLPAPER line controls grub background
/etc/default/grub - grub config. GRUB_CMDLINE_LINUX_DEFAULT line controls splash screen. ="quiet splash" OR ="". use update-grub.
/etc/modules - default modules (sometimes modules.conf)
/etc/modprobe.d/blacklist.conf - module blacklist
/etc/logrotate.conf - log rotation config
/etc/exports - contains directories available in NFS
/etc/default/tftpd-hpa - configuration for tftpd
/etc/ssh/ssh_config - ssh config
/etc/xinetd.conf
/etc/xinetd.d - directory containing files named after daemons run by xinetd. file contains line like "disable = no"
/selinux
/etc/selinux/config
~/.ssh - ssh user files
/etc/ssh/ssh_known_hosts - hosts known to ssh
~/.local/share/Trash - trash directory
~/.config/chromium/Default - chromium config
~/.config/google-chrome/Default - chrome config
~/.gnome2/nautilus-scripts/ - place scripts in this directory to make them available in context menu
when you right-click file(s), the URI(s) of the file(s) are put in a variable called $NAUTILUS_SCRIPT_SELECTED_URIS

/etc/rc.d/ - init scripts and config
can put scripts in init.d then put link in /etc/rc.d/rcX.d where X is the runlevel at which the scripts will be run.
links in rcX.d have a K (kill) or S (start) then a number for the order in which to start/kill. ie S04httpd
rc.local - custom startup script. run commands in background so they dont hang up the boot process.
/etc/init.d is link of /etc/rc.d/init.d

/proc - numbered directories pertain to job numbers
/proc/net/arp - arp table
/var/cache/apt/archives - deb package dump
/etc/apt/sources.list - deb repo list
/var/cache/yum - yum cache
/var/lib/tftpboot - default directory for tftpd

/boot/grub/grub.conf - grub configuration file
/boot/grub/menu.lst - some boot configurations.
kernel line options:
single - single user mode
rhgb - run kernel splash
quiet
splash
nosplash
verbose
nomodeset
vga=XXX - change screen resolution according to table
Colours 640x480 800x600 1024x768 1280x1024 1600x1200
--------+---------------------------------------------
256 | 769 771 773 775 796
32,768 | 784 787 790 793 797
65,536 | 785 788 791 794 798
16.8M | 786 789 792 795 799

runlevels:
0 halt
1 1user text
2 multiuser text
3 multiuser text, network
4 user defined
5 multiuser with x
6 reboot

/usr/share/mdm/themes/ - login screen themes for Mate (mdm)
/usr/share/backgrounds/linuxmint/default_background.jpg - background for lock screen on mint

</pre>

Linux Config Files - Revision history

Beard: Created page with "
/etc/issue - kernal info /etc/motd - greeting message for shell /etc/mtab - mounted devices, link of /proc/mounts. fix (rm /etc/mtab;ln -s /proc/mounts /etc/mtab) /etc/pa..."

Linux Config Files - Revision history

Beard: Created page with "/etc/issue - kernal info /etc/motd - greeting message for shell /etc/mtab - mounted devices, link of /proc/mounts. fix (rm /etc/mtab;ln -s /proc/mounts /etc/mtab) /etc/pa..."

Beard: Created page with "
/etc/issue - kernal info /etc/motd - greeting message for shell /etc/mtab - mounted devices, link of /proc/mounts. fix (rm /etc/mtab;ln -s /proc/mounts /etc/mtab) /etc/pa..."