Section 5, File formats and conventions
- ldap.conf
- LDAP configuration file/environment variables
- adduser.conf
- configuration file for adduser(8) and addgroup(8) .
- deluser.conf
- configuration file for deluser(8) and delgroup(8) .
- hosts.equiv
- list of hosts and users that are granted "trusted" r c...
- mailcap.order
- the mailcap ordering specifications
- modules
- kernel modules to load at boot time
- interfaces
- network interface configuration for ifup and ifdown
- updatedb.conf
- a configuration file for updatedb(8)
- slabinfo
- kernel slab allocator statistics
- Compose
- X client mappings for multi-key input sequences
- mmdf
- Multi-channel Memorandum Distribution Facility mailbox...
- XCompose
- X client mappings for multi-key input sequences
- access.conf
- the login access control table file
- acct
- process accounting file
- acl
- Access Control Lists
- american
- flag format for English ispell dictionaries
- american-english
- a list of English words
- apt.conf
- Configuration file for APT
- apt_preferences
- Preference control file for APT
- at.allow
- determine who can submit jobs via at or batch
- at.deny
- determine who can submit jobs via at or batch
- authorized_keys
- OpenSSH SSH daemon
- binfmt.d
- Configure additional binary formats for executables at...
- bootchart.conf
- Boot performance analysis graphing tool configuration ...
- british
- flag format for English ispell dictionaries
- capability.conf
- configuration file for the pam_cap module
- charmap
- character set description file
- config
- OpenSSL CONF library configuration files
- console-setup
- configuration file for setupcon
- core
- core dump file
- crontab
- tables for driving cron
- deb
- Debian binary package format
- deb-control
- Debian packages' master control file format
- deb-extra-override
- Debian archive extra override file
- deb-old
- old style Debian binary package format
- deb-origin
- Vendor-specific information files
- deb-override
- Debian archive override file
- deb-shlibs
- Debian shared library information file
- deb-split
- Debian multi-part binary package format
- deb-src-control
- Debian source packages' master control file format
- deb-substvars
- Debian source substitution variables
- deb-symbols
- Debian's extended shared library information file
- deb-triggers
- package triggers
- deb-version
- Debian package version number format
- depmod.d
- Configuration directory for depmod
- devscripts.conf
- configuration file for the devscripts package
- dhclient.conf
- DHCP client configuration file
- dhclient.leases
- DHCP client lease database
- dhcp-eval
- ISC DHCP conditional evaluation
- dhcp-options
- Dynamic Host Configuration Protocol options
- dir_colors
- configuration file for dircolors(1)
- discover-modprobe.conf
- configuration file for discover-modprobe(5)
- discover.conf
- configuration file format for discover(1)
- dpkg.cfg
- dpkg configuration file
- dput.cf
- Debian package upload tool configuration file
- e2fsck.conf
- Configuration file for e2fsck
- editrc
- configuration file for editline library
- elf
- format of Executable and Linking Format (ELF) files
- english
- flag format for English ispell dictionaries
- etc-aliases
- Files in use by the Debian exim4 packages
- etc-email-addresses
- Files in use by the Debian exim4 packages
- ethers
- Ethernet address to IP number database
- exim4-config_files
- Files in use by the Debian exim4 packages
- exim4_exim_crt
- Files in use by the Debian exim4 packages
- exim4_exim_key
- Files in use by the Debian exim4 packages
- exim4_host_local_deny_exceptions
- Files in use by the Debian exim4 packages
- exim4_hubbed_hosts
- Files in use by the Debian exim4 packages
- exim4_local_domain_dnsbl_whitelist
- Files in use by the Debian exim4 pac...
- exim4_local_host_blacklist
- Files in use by the Debian exim4 packages
- exim4_local_rcpt_callout
- Files in use by the Debian exim4 packages
- exim4_local_sender_blacklist
- Files in use by the Debian exim4 packages
- exim4_local_sender_callout
- Files in use by the Debian exim4 packages
- exim4_passwd
- Files in use by the Debian exim4 packages
- exim4_passwd_client
- Files in use by the Debian exim4 packages
- exim4_sender_local_deny_exceptions
- Files in use by the Debian exim4 pac...
- ext2
- the second extended file system
- ext3
- the second extended file system
- ext4
- the fourth extended file system
- faillog
- login failure logging file
- filesystems
- Linux filesystem types: minix, ext, ext2, ext3, ext4, ...
- fmtutil.cnf
- configuration file for fmtutil
- fonts-conf
- Font configuration files
- fs
- Linux filesystem types: minix, ext, ext2, ext3, ext4, ...
- fstab
- static information about the filesystems
- fzdefaults.xml
- Default options for FileZilla
- gai.conf
- getaddrinfo(3) configuration file
- gitattributes
- defining attributes per path
- githooks
- Hooks used by Git
- gitignore
- Specifies intentionally untracked files to ignore
- gitmodules
- defining submodule properties
- gitrepository-layout
- Git Repository Layout
- gitweb.conf
- Gitweb (Git web interface) configuration file
- groff_font
- format of groff device and font description files
- groff_out
- groff intermediate output format
- groff_tmac
- macro files in the roff typesetting system
- group
- user group file
- group.conf
- configuration file for the pam_group module
- gshadow
- shadowed group file
- halt
- variables that affect the behavior of the shutdown scr...
- hgignore
- syntax for Mercurial ignore files
- hgrc
- configuration files for Mercurial
- host.conf
- resolver configuration file
- hostname
- Local hostname configuration file
- hosts
- static table lookup for hostnames
- hosts.allow
- format of host access control files
- hosts.deny
- format of host access control files
- hosts_access
- format of host access control files
- hosts_options
- host access control language extensions
- hwclock
- variables that affect the behaviour of the hwclock boo...
- idmapd.conf
- configuration file for libnfsidmap
- inetd.conf
- internet "super-server"
- info
- readable online documentation
- init-d-script
- interpreter for short and simple init.d scripts.
- initramfs.conf
- configuration file for mkinitramfs
- interface-order
- resolvconf configuration file
- intro
- introduction to file formats
- ipc
- System V interprocess communication mechanisms
- ispell
- format of ispell dictionaries and affix files
- issue
- prelogin message and identification file
- journald.conf
- Journal service configuration file
- keyboard
- keyboard configuration file
- keymaps
- keyboard table descriptions for loadkeys and dumpkeys
- libaudit.conf
- libaudit configuration file
- limits.conf
- configuration file for the pam_limits module
- lj4_font
- groff fonts for use with devlj4
- locale
- describes a locale definition file
- locale.conf
- Configuration file for locale settings
- locale.gen
- Configuration file for locale-gen
- localtime
- Local timezone configuration file
- login.defs
- shadow password suite configuration
- logind.conf
- Login manager configuration file
- logrotate.conf
- rotates, compresses, and mails system logs
- machine-id
- Local machine ID configuration file
- machine-info
- Local machine information file
- magic
- file command's magic pattern file
- mailcap
- metamail capabilities file
- mailname
- the visible mail name of the system
- manpath
- format of the /etc/manpath.config file
- mbox
- Format for mail message storage.
- mke2fs.conf
- Configuration file for mke2fs
- mlocate.db
- a mlocate database
- modprobe.d
- Configuration directory for modprobe
- modules-load.d
- Configure kernel modules to load at boot
- modules.dep
- Module dependency information
- modules.dep.bin
- Module dependency information
- moduli
- Diffie-Hellman moduli
- mono-config
- Mono runtime file format configuration
- motd
- message of the day
- muttrc
- Configuration file for the Mutt Mail User Agent
- muttrc-org
- Configuration file for the Mutt Mail User Agent
- namespace.conf
- the namespace configuration file
- nanorc
- GNU nano's rcfile
- netconfig
- network configuration data base
- netrc
- user configuration for ftp
- networks
- network name information
- nfs
- fstab format and options for the nfs file systems
- nfsidmap
- The NFS idmapper upcall program
- nfsmount.conf
- Configuration file for NFS mounts
- nologin
- prevent unprivileged users from logging into the system
- notmuch-hooks
- hooks for notmuch
- nss
- Name Service Switch configuration file
- nsswitch.conf
- Name Service Switch configuration file
- numa_maps
- overview of Non-Uniform Memory Architecture
- os-release
- Operating system identification
- pam
- portable arbitrary map file format
- pam.conf
- PAM configuration files
- pam.d
- PAM configuration files
- pam_env.conf
- the environment variables config file
- papersize
- specify preferred paper size
- passwd
- the password file
- pbm
- portable bitmap file format
- pdmenurc
- menu definitions file for pdmenu
- pgm
- portable graymap file format
- png
- Portable Network Graphics (PNG) format
- pnm
- portable anymap file format
- ppm
- portable pixmap file format
- prerex
- a format for prerequisite-chart descriptions
- proc
- process information pseudo-filesystem
- procfs
- process information pseudo-filesystem
- procmailex
- procmail rcfile examples
- procmailrc
- procmail rcfile
- procmailsc
- procmail weighted scoring technique
- protocols
- protocols definition file
- rcS
- variables that affect the behavior of boot scripts
- repertoiremap
- map symbolic character names to Unicode code points
- reportbug.conf
- The configuration file for reportbug
- resolv.conf
- resolver configuration file
- resolved.conf
- Network Name Resolution configuration file
- resolver
- resolver configuration file
- rpc
- RPC program number data base
- rsyncd.conf
- configuration file for rsync in daemon mode
- rsyslog.conf
- rsyslogd(8) configuration file
- samhainrc
- samhain(8) configuration file
- sane-abaton
- SANE backend for Abaton flatbed scanners
- sane-agfafocus
- SANE backend for AGFA Focus flatbed scanners
- sane-apple
- SANE backend for Apple flatbed scanners
- sane-artec
- SANE backend for Artec flatbed scanners
- sane-artec_eplus48u
- SANE backend for the scanner Artec E+ 48U and re-ba...
- sane-as6e
- SANE backend for using the Artec AS6E parallel port in...
- sane-avision
- SANE backend for original Avision and Avision OEM scan...
- sane-bh
- SANE backend for Bell+Howell Copiscan II series docume...
- sane-canon
- SANE backend for Canon SCSI scanners
- sane-canon630u
- SANE backend for the Canon 630u USB flatbed scanner
- sane-canon_dr
- SANE backend for Canon DR-series scanners
- sane-canon_pp
- SANE backend for Canon CanoScan Parallel Port flatbed ...
- sane-cardscan
- SANE backend for Corex CardScan usb scanners
- sane-coolscan
- SANE backend for Nikon film-scanners
- sane-coolscan2
- SANE backend for Nikon Coolscan film scanners
- sane-coolscan3
- SANE backend for Nikon Coolscan film scanners
- sane-dc210
- SANE backend for Kodak DC210 Digital Camera
- sane-dc240
- SANE backend for Kodak DC240 Digital Camera
- sane-dc25
- SANE backend for Kodak DC20/DC25 Digital Cameras
- sane-dmc
- SANE backend for the Polaroid Digital Microscope Camera
- sane-epjitsu
- SANE backend for Epson-based Fujitsu USB scanners.
- sane-epson
- SANE backend for EPSON scanners
- sane-epson2
- SANE backend for EPSON scanners
- sane-fujitsu
- SANE backend for Fujitsu flatbed and ADF scanners
- sane-genesys
- SANE backend for GL646, GL841, GL843, GL847 and GL124 ...
- sane-geniusvp2
- SANE backend for Genius ColorPage-Vivid Pro II (PP) sc...
- sane-gphoto2
- SANE backend for gphoto2 supported cameras
- sane-gt68xx
- SANE backend for GT-68XX based USB flatbed scanners
- sane-hp
- SANE backend for HP ScanJet scanners
- sane-hp3500
- SANE backend for Hewlett-Packard ScanJet 3500 series s...
- sane-hp3900
- SANE backend for RTS8822 chipset based scanners
- sane-hp4200
- SANE backend for Hewlett-Packard 4200 scanners
- sane-hp5400
- SANE backend for Hewlett-Packard 54XX scanners
- sane-hp5590
- SANE backend for Hewlett-Packard 4500C/4570C/5500C/555...
- sane-hpljm1005
- SANE backend for Hewlett-Packard LaserJet M1005 MFP Sc...
- sane-hpsj5s
- SANE backend for HP ScanJet 5S sheet-fed scanner
- sane-hs2p
- SANE backend for Ricoh SCSI flatbed/ADF scanners
- sane-ibm
- SANE backend for IBM and Ricoh SCSI flatbed scanners
- sane-kodak
- SANE backend for big Kodak flatbed and ADF scanners
- sane-kodakaio
- SANE backend for Kodak aio printer / scanners
- sane-kvs1025
- SANE backend for Panasonic KV-S102xC USB ADF scanners.
- sane-kvs20xx
- SANE backend for Panasonic KV-S20xxC USB/SCSI ADF scan...
- sane-kvs40xx
- SANE backend for Panasonic KV-S40xxC USB/SCSI ADF scan...
- sane-leo
- SANE backend for LEO Technologies scanners
- sane-lexmark
- SANE backend for Lexmark X1100/X1200 Series scanners
- sane-ma1509
- SANE backend for Mustek BearPaw 1200F USB scanner
- sane-magicolor
- SANE backend for KONICA MINOLTA magicolor scanners
- sane-matsushita
- SANE backend for Panasonic KV-SS high speed scanners
- sane-microtek
- SANE backend for Microtek scanners
- sane-microtek2
- SANE backend for Microtek scanners with SCSI-2 command...
- sane-mustek
- SANE backend for Mustek SCSI flatbed scanners (and som...
- sane-mustek_pp
- SANE backend for Mustek parallel port flatbed scanners
- sane-mustek_usb
- SANE backend for Mustek USB flatbed scanners
- sane-mustek_usb2
- SANE backend for SQ113 based USB flatbed scanners
- sane-nec
- SANE backend for NEC scanners
- sane-net
- SANE network backend
- sane-niash
- SANE backend for scanners based on the NIASH chipset.
- sane-p5
- SANE backend for the Primax PagePartner
- sane-pie
- SANE backend for PIE, Devcom and AdLib SCSI flatbed sc...
- sane-pixma
- SANE backend for Canon Multi-Function Printers and Can...
- sane-plustek
- SANE backend for LM983[1/2/3] based USB flatbed scanners
- sane-plustek_pp
- SANE backend for Plustek parallel port flatbed scanners
- sane-qcam
- SANE backend for Connectix QuickCam cameras
- sane-ricoh
- SANE backend for Ricoh flatbed scanners
- sane-rts8891
- SANE backend for rts8891 based scanners
- sane-s9036
- SANE backend for Siemens 9036 flatbed scanners
- sane-sceptre
- SANE backend for SCEPTRE scanners
- sane-scsi
- SCSI adapter tips for scanners
- sane-sharp
- SANE backend for SHARP scanners
- sane-sm3600
- SANE backend for Microtek scanners with M011 USB chip
- sane-sm3840
- SANE backend for Microtek scanners with SCAN08 USB chip
- sane-snapscan
- SANE backend for AGFA SnapScan flatbed scanners
- sane-sp15c
- SANE backend for Fujitsu ScanPartner 15C flatbed scanner
- sane-st400
- SANE backend for Siemens ST/Highscan flatbed scanners
- sane-stv680
- SANE backend for STV680 camera's
- sane-tamarack
- SANE backend for Tamarack flatbed scanners
- sane-teco1
- SANE backend for TECO / RELISYS scanners
- sane-teco2
- SANE backend for TECO / RELISYS scanners
- sane-teco3
- SANE backend for TECO / RELISYS scanners
- sane-test
- SANE backend for testing frontends
- sane-u12
- SANE backend for Plustek USB flatbed scanners, based o...
- sane-umax
- SANE backend for UMAX scanners
- sane-umax1220u
- SANE backend for the UMAX Astra 1220U and similar scan...
- sane-umax_pp
- SANE backend for Umax Astra parallel port flatbed scan...
- sane-usb
- USB configuration tips for SANE
- sane-v4l
- SANE interface for Video for Linux API
- sane-xerox_mfp
- SANE backend for Xerox Phaser 3200MFP device
- securetty
- file which lists terminals from which root can log in
- semanage.conf
- global configuration file for the SELinux Management l...
- sensors.conf
- libsensors configuration file
- sepermit.conf
- configuration file for the pam_sepermit module
- services
- Internet network services list
- shadow
- shadowed password file
- shells
- pathnames of valid login shells
- sources.list
- List of configured APT data sources
- ssh_config
- OpenSSH SSH client configuration files
- sshd_config
- OpenSSH SSH daemon configuration file
- subgid
- the subordinate gid file
- subuid
- the subordinate uid file
- sudo.conf
- configuration for sudo front end
- sudoers
- default sudo security policy plugin
- svnserve.conf
- Repository configuration file for svnserve
- synctex
- Synchronize TeXnology help file
- sysctl.conf
- sysctl preload/configuration file
- sysctl.d
- Configure kernel parameters at boot
- systemd-sleep.conf
- Suspend and hibernation configuration file
- systemd-system.conf
- System and session service manager configuration file
- systemd-user.conf
- System and session service manager configuration file
- systemd.automount
- Automount unit configuration
- systemd.device
- Device unit configuration
- systemd.exec
- Execution environment configuration
- systemd.kill
- Process killing procedure configuration
- systemd.link
- Network device configuration
- systemd.mount
- Mount unit configuration
- systemd.netdev
- Virtual Network Device configuration
- systemd.network
- Network configuration
- systemd.path
- Path unit configuration
- systemd.preset
- Service enablement presets
- systemd.resource-control
- Resource control unit settings
- systemd.scope
- Scope unit configuration
- systemd.service
- Service unit configuration
- systemd.slice
- Slice unit configuration
- systemd.snapshot
- Snapshot unit configuration
- systemd.socket
- Socket unit configuration
- systemd.swap
- Swap unit configuration
- systemd.target
- Target unit configuration
- systemd.timer
- Timer unit configuration
- systemd.unit
- Unit configuration
- sysusers.d
- Declarative allocation of system users and groups
- term
- format of compiled term file.
- termcap
- terminal capability database
- terminal-colors.d
- Configure output colorization for various utilities
- terminfo
- terminal capability data base
- texinfo
- software documentation system
- time.conf
- configuration file for the pam_time module
- timidity.cfg
- configure file of TiMidity++
- tmpfiles.d
- Configuration for creation, deletion and cleaning of v...
- tmpfs
- variables that configure tmpfs filesystems mounted dur...
- twfiles
- overview of files used by Tripwire and file backup pro...
- tzfile
- timezone information
- ucf.conf
- site-wide configuration file for ucf
- umax_pp
- SANE backend for Umax Astra parallel port flatbed scan...
- update-exim4.conf.conf
- Generate exim4 configuration files.
- update-initramfs.conf
- configuration file for update-initramfs
- updmap.cfg
- configuration of font mapping/inclusion for dvips and ...
- user-dirs.conf
- configuration for xdg-user-dirs-update
- user-dirs.defaults
- default settings for XDG user dirs
- user-dirs.dirs
- settings for XDG user dirs
- utmp
- login records
- utmpx
- login records
- whois.conf
- alternative WHOIS servers list for whois client
- wpa_supplicant.conf
- configuration file for wpa_supplicant
- wtmp
- login records
- x509v3_config
- X509 V3 certificate extension configuration format
- xorg.conf
- configuration files for Xorg X server
- xorg.conf.d
- configuration files for Xorg X server
- Xsession
- initialize X session
- Xsession.options
- configuration options for Xsession (5)
- Xwrapper.config
- configuration options for X server wrapper