Nightfetch is built on Linux-specific directories so it may not work on other systems. FreeBSD and OpenBSD are technically in the distro list, but are untested.

Nightfetch supports these sources:

• os - /etc/os-release
• cpu - /proc/cpuinfo
• mem - /proc/meminfo
• uptime - /proc/uptime
• kernel - /proc/sys/kernel/arch, /proc/sys/kernel/hostname, /proc/sys/kernel/osrelease, /proc/sys/kernel/ostype
• board - /sys/devices/virtual/dmi/id/board_name, /sys/devices/virtual/dmi/id/board_vendor, /sys/devices/virtual/dmi/id/board_version
• host:name - /etc/hostname
• distro - your distro’s logo and package manager
• env - envvars

By default, the config file is located in $XDG_CONFIG_HOME/nightfetch/config or $HOME/.config/nightfetch/config

To include a variable, use {source:key} in your config. Key naming is as follows:

• os, cpu, mem - as in source, all lowercase
  • cpu - only vendor, model, name, threads, cores, mhz_$core, ghz_$core
  • mem - only fields containing Total or Free and swapused, memused in kb, mb, gb(suffix with _kb, _mb, _gb respectively)
• uptime - uptime_hours, uptime_mins and uptime_secs for hours, minutes and seconds
• kernel - arch, hostname, osrelease, ostype, all corresponding to the file of the same name
• board - name, vendor, version, all corresponding to board_$key
• host - only name - contents of /etc/hostname
• distro - pm_name - the name of distro’s package manager, pm_count - number of packages installed, color - used in {cauto}, logo_tiny - distro’s logo as in nerd fonts[fn:1], logo_$i - distro’s logo line by line
• env - environment variable name verbatim

Nightfetch supports these styles:

• { } - clear all prior styling(including colors)
• {b} - bold
• {d} - dim
• {i} - italic
• {u} - underline

and these colors:

• {cauto} - primary color of your distro
• {c0} - black
• {c1} - red
• {c2} - green
• {c3} - yellow
• {c4} - blue
• {c5} - magenta
• {c6} - cyan
• {c7} - white

All lines that start with # are ignored

• -c/--config /path/to/config - change path to config
• -l/--config logo - change distro:logo_tiny, distro:logo_$i and distro:color to that of logo
• -h/--help - show help

[fn:1: opensuse-tumbleweed, opensuse-leap and pureos don’t have nf icons, so they’re substituted by similar-looking characters]