DMC Cisco Networking Academy



# Common important bash Configuration Files# ITSC 1358 Unix/Linux Administration - Prof. Michael P. Harris -(dot)- (be sure to check matching non-dot files)~/.bashrc - personal aliases and functions login script~/.bash_profile - personal environment-variables and login script~/.profile - personal environment-variables and login script~/.bash_history - user command-line history of commands executed during the prior login~/.bash_logout - personal bash-script to run at logout~/.inputrc - local key-bindings (keyboard configuration) for the command-line editor~/.viminfo or ~/.exrc - individual startup vi/vim editor configuration and history file -b-/etc/bashrc - global aliases and functions login script (old name: /etc/rc) -c-/etc/crontab - commands and run times, for the cron task scheduler daemon/etc/cupsd.conf - configuration file, CUPS print server daemon -d-/etc/DIR_COLORS - config file, used by the dircolors command to set: LS_COLORS /etc/DISPLAY - startup or current login console/etc/dhcpd.conf - configuration file, for the DHCP server daemon/etc/dhcp-options - Dynamic Host Configuration Protocol options -f-/etc/fstab - filesystems mounted automatically at startup (filesystem table) -g-/etc/group - user-accounts group membership database -h-/etc/HOSTNAME - network hostname assigned to this computer (uname –n)/etc/host.conf - configure how network hostnames are resolved/etc/hosts - local static DNS hostname resolution file/etc/hosts.allow - hostnames allowed to use Internet services/etc/hosts.deny - hostnames NOT allowed to use Internet services/etc/httpd.conf - configuration file for the Apache web-server daemon -i-* /etc/init.d/ - parent directory, for the init command shellscripts/etc/inetd.conf - configuration file, for the Internet services daemon inetd/etc/initscript - configuration script to execute inittab commands/etc/inittab - configuration file, processes to start at bootup/etc/inputrc - keyboard-mapping configuration for bash and most other shells -l-/etc/lilo.conf - configuration file, boot command-line parameters/etc/localtime - symbolic-link to the time zone information file/var/locatedb - index-file for the locate command (created by: updatedb) -m-/etc/machine-id - unique machine-id set during installation (see command: hostid)/etc/man_db.config - directories to add to the MANDATORY_MANPATH variable/etc/modules.conf - configuration file, for the modprobe command/etc/motd - message-of-the-day file, displayed at login/etc/mtab - mounted removable filesystems (see: /etc/fstab)/usr/share/file/magic - magic-number fingerprint database file, for the file command/usr/share/file/magic.mime - mime-types for the magic-number fingerprint file/usr/share/misc/man.conf - configuration file, MANPATH and MANBIN variables -n-/etc/networks - locally accessible network names and addresses/etc/nologin - list of non-root users to prevent from logging in -p-* /etc/profile.d/ - parent directory, scripts to run at login/etc/passwd - users-accounts information file (see: /etc/shadow)/etc/printcap - printer capabilities database (escape sequences)/etc/profile - global environment-variables and user login script/etc/protocols - Internet IETF protocols definition file for inetd -r-* /etc/rc.d/ - parent directory, bootup scripts (-or- /etc/rc/)/etc/resolv.conf - configuration file, DNS-servers IP-addresses -s-* /etc/skel/ - parent directory, new-user configuration files/etc/services - map port-numbers to named Internet services/etc/shadow - encrypted file that holds user-account passwords /etc/shells - trusted command-shells installed on this system/etc/sudoers - list of users allowed to run the sudo command/etc/sysctl.conf - configuration file, kernel runtime parameters -t-* /usr/share/terminfo/ - parent directory, individual terminal capabilities files/etc/termcap - terminal capabilities database (escape sequences)/etc/ttytype - terminal-device to default terminal-type mapping -v-/usr/share/vim/vimrc - global vi/vim configuration file (see: ~/.vimrc) -w-/usr/share/man/whatis - man-page index for the whatis & apropos commands (makewhatis)* /proc/ - real-time process information, pseudo-filesystem/proc/cpuinfo - processor information, type, make and performance (uname –m)/proc/devices - devices configured into the running kernel/proc/filesystems - filesystems configured into the running kernel/proc/ioports - I/O port-addresses assigned and currently in use/proc/interrupts - interrupts currently in use and how often used/proc/kcore - an image of the physical memory of the system/proc/kmsg - messages output by the kernel routed to syslog/proc/loadavg - real-time cpu work load averages of the system/proc/meminfo - memory usage information, both physical and swap (free)/proc/modules - kernel-modules that are currently loaded/proc/mounts - information on currently mounted filesystems (df)/proc/net - status-information about network protocols (ifconfig)/proc/self - symbolic-link to the programs looking at /proc/proc/stat - real-time system statistics; page faults, etc./proc/uptime - amount of time the system has been up and running (uptime)/proc/version - running kernel version* /var/ - real-time environment information files/var/locatedb - file-index for the locate command (created by: updatedb)/var/log/lastlog - information about the last user-login/var/log/messages - the main system message log file/var/log/secure - real-time system tracking of user logins/var/log/wtmp - information about logged-in users for finger/var/named/root.hints - information-file for the domain-name server/var/run/utmp - information about logged-in users for the who and w commands ................
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