Update README.md

README.md

@@ -1,3 +1,21 @@
-# releases
+# Agent Hub
 
-Agent Hub's releases. Each build's install lines and files appear here once it is published.
+Install Agent Hub with one line, no login. Running it again updates Agent Hub.
+
+**Windows**, in PowerShell:
+
+```powershell
+irm https://git.bengles.se/agent-hub/releases/raw/branch/main/install.ps1 | iex
+```
+
+**Linux** (x86_64), in a terminal:
+
+```sh
+curl -fsSL https://git.bengles.se/agent-hub/releases/raw/branch/main/install.sh | sh
+```
+
+Or download the newest setup file and run it: [agent-hub-setup.exe](https://git.bengles.se/agent-hub/releases/releases/download/latest/agent-hub-setup.exe) (Windows) or [agent-hub-setup-linux](https://git.bengles.se/agent-hub/releases/releases/download/latest/agent-hub-setup-linux) (Linux).
+
+Every build is a release here, the newest 3 of them; the `latest` release holds the newest build's files.
+
+**License:** free to use, no warranty; all rights reserved. Third-party notices ship with every release.

install.ps1

@@ -0,0 +1,42 @@
+# Agent Hub's install: installs the newest Agent Hub for this user and opens it; running it again updates (HUB-10).
+# Its line: irm https://git.bengles.se/agent-hub/releases/raw/branch/main/install.ps1 | iex
+# AGENT_HUB_SETUP_ARGS, when set, is added to the setup's arguments, e.g. --no-start.
+& {
+    $ErrorActionPreference = 'Stop'
+    $ProgressPreference = 'SilentlyContinue'
+    $v = $PSVersionTable.PSVersion
+    if ($v.Major -lt 5 -or ($v.Major -eq 5 -and $v.Minor -lt 1) -or ($PSVersionTable.PSEdition -eq 'Core' -and -not $IsWindows)) {
+        Write-Host 'This line installs Agent Hub on Windows, from PowerShell 5.1 or later. On Linux, run the curl line instead.' -ForegroundColor Red
+        return
+    }
+    if ($PSVersionTable.PSEdition -ne 'Core') {
+        [Net.ServicePointManager]::SecurityProtocol = [Net.ServicePointManager]::SecurityProtocol -bor [Net.SecurityProtocolType]::Tls12
+    }
+    $exe = Join-Path $env:TEMP 'agent-hub-setup.exe'
+    Write-Host 'Downloading Agent Hub...'
+    try {
+        Invoke-WebRequest -Uri 'https://git.bengles.se/agent-hub/releases/releases/download/latest/agent-hub-setup.exe' -OutFile $exe -UseBasicParsing
+    } catch {
+        $failure = $_
+        $status = 0
+        try { $status = [int]$failure.Exception.Response.StatusCode } catch {}
+        if ($status -eq 0) {
+            try { Invoke-WebRequest -Uri 'https://git.bengles.se/agent-hub/releases/releases/download/latest/agent-hub-setup.exe' -Method Head -UseBasicParsing | Out-Null }
+            catch { try { $status = [int]$_.Exception.Response.StatusCode } catch {} }
+        }
+        if ($status -eq 404) { Write-Host 'Can''t download Agent Hub from git.bengles.se/agent-hub/releases: it has no release yet. Try again in a minute.' -ForegroundColor Red }
+        else { Write-Host ('Can''t download Agent Hub from git.bengles.se/agent-hub/releases: ' + $failure.Exception.Message + ' ' + 'Try again in a minute.') -ForegroundColor Red }
+        return
+    }
+    $saved = @{}
+    $extra = @("$env:AGENT_HUB_SETUP_ARGS" -split '\s+' | Where-Object { $_ })
+    Write-Host 'Installing Agent Hub...'
+    try {
+        & $exe @extra
+        $code = $LASTEXITCODE
+    } finally {
+        foreach ($name in $saved.Keys) { [Environment]::SetEnvironmentVariable($name, $saved[$name]) }
+    }
+    Remove-Item $exe -ErrorAction SilentlyContinue
+    if ($code -ne 0) { Write-Host 'Agent Hub''s setup stopped: see above.' -ForegroundColor Red }
+}

install.sh

@@ -0,0 +1,32 @@
+#!/bin/sh
+# Agent Hub's install: installs the newest Agent Hub for this user and opens it; running it again updates (HUB-10).
+# Its line: curl -fsSL https://git.bengles.se/agent-hub/releases/raw/branch/main/install.sh | sh
+# AGENT_HUB_SETUP_ARGS, when set, is added to the setup's arguments, e.g. --no-start.
+agent_hub_install() {
+    if [ "$(uname -s)" != Linux ] || [ "$(uname -m)" != x86_64 ]; then
+        echo 'This line installs Agent Hub on Linux (x86_64). On Windows, run the PowerShell line instead.' >&2
+        return 1
+    fi
+    glibc=$(getconf GNU_LIBC_VERSION 2>/dev/null) || glibc=
+    case "${glibc#glibc }" in
+    2.[0-9]|2.[12][0-9]|2.3[0-4]) echo "Agent Hub needs glibc 2.35 or newer; this system has ${glibc#glibc }." >&2; return 1 ;;
+    esac
+    command -v curl >/dev/null 2>&1 || { echo 'Installing Agent Hub needs curl.' >&2; return 1; }
+    dir=$(mktemp -d) || return 1
+    exe="$dir/agent-hub-setup-linux"
+    echo 'Downloading Agent Hub...'
+    status=$(curl -sSL -o "$exe" -w '%{http_code}' 'https://git.bengles.se/agent-hub/releases/releases/download/latest/agent-hub-setup-linux') || status=${status:-000}
+    case "$status" in
+    200) ;;
+    404) echo 'Can'\''t download Agent Hub from git.bengles.se/agent-hub/releases: it has no release yet. Try again in a minute.' >&2; rm -rf "$dir"; return 1 ;;
+    *) echo 'Can'\''t download Agent Hub from git.bengles.se/agent-hub/releases'" (HTTP $status). "'Try again in a minute.' >&2; rm -rf "$dir"; return 1 ;;
+    esac
+    chmod +x "$exe"
+    echo 'Installing Agent Hub...'
+    "$exe" ${AGENT_HUB_SETUP_ARGS:-} </dev/null
+    code=$?
+    rm -rf "$dir"
+    [ "$code" -eq 0 ] || echo "Agent Hub's setup stopped: see above." >&2
+    return "$code"
+}
+agent_hub_install