brew install snitch

go install github.com/karol-broda/snitch@latest

nix-env -iA nixpkgs.snitch

# try it
nix run github:karol-broda/snitch

# install to profile
nix profile install github:karol-broda/snitch

# or add to flake inputs
{
  inputs.snitch.url = "github:karol-broda/snitch";
}
# then use: inputs.snitch.packages.${system}.default

{
  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
    home-manager.url = "github:nix-community/home-manager";
    snitch.url = "github:karol-broda/snitch";
  };

  outputs = { nixpkgs, home-manager, snitch, ... }: {
    homeConfigurations."user" = home-manager.lib.homeManagerConfiguration {
      pkgs = nixpkgs.legacyPackages.x86_64-linux;
      modules = [
        snitch.homeManagerModules.default
        {
          programs.snitch = {
            enable = true;
            # optional: use the flake's package instead of nixpkgs
            # package = snitch.packages.x86_64-linux.default;
            settings = {
              defaults = {
                theme = "catppuccin-mocha";
                interval = "2s";
                resolve = true;
              };
            };
          };
        }
      ];
    };
  };
}

# with yay
yay -S snitch-bin

# with paru
paru -S snitch-bin

curl -sSL https://raw.githubusercontent.com/karol-broda/snitch/master/install.sh | sh

curl -sSL https://raw.githubusercontent.com/karol-broda/snitch/master/install.sh | INSTALL_DIR=~/bin sh

# pull from ghcr.io
docker pull ghcr.io/karol-broda/snitch:latest          # alpine (default)
docker pull ghcr.io/karol-broda/snitch:latest-alpine   # alpine (~17MB)
docker pull ghcr.io/karol-broda/snitch:latest-scratch  # minimal, binary only (~9MB)
docker pull ghcr.io/karol-broda/snitch:latest-debian   # debian trixie
docker pull ghcr.io/karol-broda/snitch:latest-ubuntu   # ubuntu 24.04

# or use a specific version
docker pull ghcr.io/karol-broda/snitch:0.2.0-alpine

nix build github:karol-broda/snitch#snitch-alpine
docker load < result

# basic usage - sees host sockets but not process names
docker run --rm --net=host snitch:latest ls

# full info - includes PID, process name, user
docker run --rm --net=host --pid=host --cap-add=SYS_PTRACE snitch:latest ls

tar xzf snitch_*.tar.gz
sudo mv snitch /usr/local/bin/

snitch              # launch interactive tui
snitch -l           # tui showing only listening sockets
snitch ls           # print styled table and exit
snitch ls -l        # listening sockets only
snitch ls -t -e     # tcp established connections
snitch ls -p        # plain output (parsable)

snitch                  # all connections
snitch -l               # listening only
snitch -t               # tcp only
snitch -e               # established only
snitch -i 2s            # 2 second refresh interval

j/k, ↑/↓      navigate
g/G           top/bottom
t/u           toggle tcp/udp
l/e/o         toggle listen/established/other
s/S           cycle sort / reverse
w             watch/monitor process (highlight)
W             clear all watched
K             kill process (with confirmation)
/             search
enter         connection details
?             help
q             quit

snitch ls               # styled table (default)
snitch ls -l            # listening only
snitch ls -t -l         # tcp listeners
snitch ls -e            # established only
snitch ls -p            # plain/parsable output
snitch ls -o json       # json output
snitch ls -o csv        # csv output
snitch ls -n            # numeric (no dns resolution)
snitch ls --no-headers  # omit headers

snitch json
snitch json -l

snitch watch -i 1s | jq '.count'
snitch watch -l -i 500ms

snitch upgrade              # check for updates
snitch upgrade --yes        # upgrade automatically
snitch upgrade -v 0.1.7     # install specific version

-t, --tcp           tcp only
-u, --udp           udp only
-l, --listen        listening sockets
-e, --established   established connections
-4, --ipv4          ipv4 only
-6, --ipv6          ipv6 only

--resolve-addrs     resolve ip addresses to hostnames (default: true)
--resolve-ports     resolve port numbers to service names
--no-cache          disable dns caching (force fresh lookups)

snitch ls proto=tcp state=listen
snitch ls pid=1234
snitch ls proc=nginx
snitch ls lport=443
snitch ls contains=google

  ╭─────────────────┬───────┬───────┬─────────────┬─────────────────┬────────╮
  │ PROCESS         │ PID   │ PROTO │ STATE       │ LADDR           │ LPORT  │
  ├─────────────────┼───────┼───────┼─────────────┼─────────────────┼────────┤
  │ nginx           │ 1234  │ tcp   │ LISTEN      │ *               │ 80     │
  │ postgres        │ 5678  │ tcp   │ LISTEN      │ 127.0.0.1       │ 5432   │
  ╰─────────────────┴───────┴───────┴─────────────┴─────────────────┴────────╯
  2 connections

PROCESS    PID    PROTO   STATE    LADDR       LPORT
nginx      1234   tcp     LISTEN   *           80
postgres   5678   tcp     LISTEN   127.0.0.1   5432

[defaults]
numeric = false      # disable name resolution
dns_cache = true     # cache dns lookups (set to false to disable)
theme = "auto"       # color theme: auto, dark, light, mono

[tui]
remember_state = false   # remember view options between sessions

SNITCH_THEME=dark          # set default theme
SNITCH_RESOLVE=0           # disable dns resolution
SNITCH_DNS_CACHE=0         # disable dns caching
SNITCH_NO_COLOR=1          # disable color output
SNITCH_CONFIG=/path/to     # custom config file path