@@ -137,12 +137,44 @@ 
                         ENVIRONMENT VARIABLES
 
   before zoa runs, it sets a few standard environment variables for your usage.
-  here are _all of them_ on my dev machine:
-    OS="Linux"
-    DISTRO="arch"
-    NODENAME="nostromo.j3s.sh"
-    # design guideline: everything in zoa uses base units. MEM_TOTAL is in bytes.
-    MEM_TOTAL="16165548000"
+  here are _all of them_.
+
+    displayed values are from my dev system
+    caveats are marked with *
+
+    $PATH - the search path for binaries. this is hardcoded.
+      PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin
+
+    $ARCH - the name of the hardware type on which the system is running
+      ARCH=x86_64
+
+    $HOSTNAME - the name of this node.
+      HOSTNAME=nostromo.j3s.sh
+        * there is no shortname vs fqdn standard, so this env var may vary
+          by distro
+
+    $OS - the operating system name
+      OS=Linux
+        * on BSD systems, this var is a lot more useful
+        * if you want your distro, take a look at OS_RELEASE_ID
+
+    $RELEASE - the current release level of the operating system implementation
+      RELEASE=5.19.5-arch1-1
+  
+       ! WARNING: ALL $OS_RELEASE_* VARIABLES ARE UNRELIABLE !
+            be sure to check for their existence before
+            using them. ty~ :3
+
+    $OS_RELEASE_ID - short uncapitalized name of your distro
+      OS_RELEASE_ID=arch
+        * see above warning
+
+    $OS_RELEASE_VERSION_ID - version of your distro, if applicable
+      OS_RELEASE_VERSION_ID=  # note that arch has no version ID
+        * see above warning
+
+    TODO: expose hardware info, cpu cores, ip address, memory availability, etc
+
 
                           HELPER FUNCTIONS
 

@@ -1,6 +1,7 @@ 
 package main
 
 import (
+	"bufio"
 	"bytes"
 	"context"
 	"fmt"
@@ -8,7 +9,9 @@ "log"
 	"os"
 	"path/filepath"
 	"strings"
+	"syscall"
 
+	"mvdan.cc/sh/v3/expand"
 	"mvdan.cc/sh/v3/interp"
 	"mvdan.cc/sh/v3/syntax"
 )
@@ -23,11 +26,132 @@ r, err := interp.New(interp.StdIO(nil, os.Stdout, os.Stderr))
 	if err != nil {
 		log.Fatal(err)
 	}
+
+	// set standard env vars for runtime
+	r.Env, err = generateEnv()
+	if err != nil {
+		log.Fatal(err)
+	}
+	fmt.Printf("%+v", r.Env)
 
 	entrypoint := filepath.Join(rootDir, "main")
 	runCommands(entrypoint, r)
 }
 
+func generateEnv() (expand.Environ, error) {
+	// syscall.Uname _should_ be supported on all *nix systems and is backed
+	// by posix
+	var env expand.Environ
+	uname := syscall.Utsname{}
+	err := syscall.Uname(&uname)
+	if err != nil {
+		return env, err
+	}
+
+	// shell := "/bin/sh"?
+
+	// $PATH is annoyingly non-standard, so we hardcode the var
+	// to the binary paths described in the fhs standard.
+	// in most cases, this will "just work" for people, but special
+	// cases should be evaluated - this may need some adjustment in the future.
+	// i am resistant to making it over-rideable.
+	//
+	// users can always call their special binaries with their full paths
+	// if they are resistant to moving them for some reason.
+	path := envString("PATH", "/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin")
+	uname_os := envString("OS", charsToString(uname.Sysname[:]))
+	uname_release := envString("RELEASE", charsToString(uname.Release[:]))
+	uname_arch := envString("ARCH", charsToString(uname.Machine[:]))
+	if err != nil {
+		return env, err
+	}
+
+	// standards are extremely annoying about hostnames.
+	//
+	// "Note that there is no standard that
+	// says that the hostname set by sethostname(2)
+	// is the same string as the nodename field of
+	// the struct returned by uname() (indeed, some
+	// systems allow a 256-byte hostname and an 8-byte
+	// nodename), but this is true on Linux. The same
+	// holds for setdomainname(2) and the domainname field."
+	//
+	// in practice, there's usually not a difference between HOSTNAME
+	// and NODENAME, so i've chosen to only expose HOSTNAME for the
+	// sake of simplicity. i'm using the Golang implementation, which
+	// does call out to uname, annoyingly.
+	//
+	// if this becomes an issue, i'll revisit it. i doubt it though.
+	// tldr: i'm ignoring that golang's os.Hostname() implementation
+	// isn't standards-compliant by the letter of the law.
+	// in actual practice, the hostname and nodename
+	// are always identical in every case i've observed.
+	//
+	// and i'm exposing only 1 because otherwise things get annoying.
+	// shrug.
+	h, err := os.Hostname()
+	if err != nil {
+		return env, err
+	}
+	uname_hostname := fmt.Sprintf("HOSTNAME=%s", h)
+
+	// !OS_RELEASE_* VARS ARE NOT STANDARDS-BACKED!
+	// OS_* vars may or may not exist depending on the distro in question, so
+	// they're not reliable _at all_. they're scraped from /etc/os-release
+	// and are useful for identifying specific Linux distros, or their versions.
+	//
+	// if you rely on these variables, I highly suggest checking for their
+	// existence with test -z before utilizing them. there be no standards here.
+	os_release, err := getOSRelease()
+	if err != nil {
+		return env, err
+	}
+	osReleaseID := envString("OS_RELEASE_ID", os_release.ID)
+	osReleaseVersionID := envString("OS_RELEASE_VERSION_ID", os_release.VersionID)
+
+	env = expand.ListEnviron(path, // normie shit
+		uname_os, uname_hostname, uname_release, uname_arch, // uname-derivated env vars
+		osReleaseID, osReleaseVersionID) // /etc/os-release
+	return env, nil
+}
+
+func envString(key string, value string) string {
+	return fmt.Sprintf("%s=%s", key, value)
+}
+
+// I want to keep this list as small as possible, since
+// this struct is unreliable.
+// design principle: only 1 way to do common things
+type OSRelease struct {
+	ID        string // distro name - "arch"
+	VersionID string // for debian distros, this is set to "22.04"
+}
+
+// getOsRelease parses /etc/os-release data
+// into a struct
+func getOSRelease() (OSRelease, error) {
+	var osr = OSRelease{}
+	f, err := os.Open("/etc/os-release")
+	if err != nil {
+		return osr, err
+	}
+	defer f.Close()
+
+	scanner := bufio.NewScanner(f)
+	for scanner.Scan() {
+		key, value, _ := strings.Cut(scanner.Text(), "=")
+		value = strings.Trim(value, `"`)
+		switch key {
+		case "ID":
+			osr.ID = value
+		case "VERSION_ID":
+			osr.VersionID = value
+		}
+	}
+
+	return osr, nil
+}
+
 // this is used to detect when the script
 // name changes from run to run, which allows
 // us to prettily-print
@@ -36,7 +160,9 @@ 
 func runCommands(scriptPath string, r *interp.Runner) {
 	script, err := parseFile(scriptPath)
 	if err != nil {
-		log.Fatal(err)
+		fmt.Println("error in " + scriptPath)
+		fmt.Println(err)
+		os.Exit(1)
 	}
 
 	// execute every statement individually, decorating
@@ -55,11 +181,11 @@ 
 		// if the script name changed between runs,
 		// print it
 		if scriptPath != lastScriptPath {
-			fmt.Println("\t" + scriptPath)
+			bluePrintln("  " + scriptPath)
 			lastScriptPath = scriptPath
 		}
 
-		fmt.Printf("\t$ %s\n", cmdName)
+		fmt.Printf("  $ %s\n", cmdName)
 		err = r.Run(ctx, stmt)
 		if err != nil {
 			os.Exit(1)
@@ -88,10 +214,16 @@ f, err := os.Open(filename)
 	if err != nil {
 		return result, err
 	}
+	defer f.Close()
 	result, err = syntax.NewParser().Parse(f, "")
 	return result, err
 }
 
+func bluePrintln(s string) {
+	colored := fmt.Sprintf("\x1b[%dm%s\x1b[0m", 34, s)
+	fmt.Println(colored)
+}
+
 // runStatements takes a file & runs individual
 // commands from that file, prepending the decorator
 // and returning the first error
@@ -99,3 +231,14 @@ // func runScript(file *syntax.File) error {
 // fmt.Printf("%s%s\n", decorator, output)
 // return nil
 // }
+
+func charsToString(arr []int8) string {
+	b := make([]byte, 0, len(arr))
+	for _, v := range arr {
+		if v == 0x00 {
+			break
+		}
+		b = append(b, byte(v))
+	}
+	return string(b)
+}

@@ -0,0 +1,1 @@ 
+hewo u ;3

@@ -1,11 +1,21 @@ 
+# tests function inheretence
+println() {
+  printf "%s.\n" "$1"
+}
+
 # hewo
 ls
-
 PASSTHROUGH=bananas
 
 # fix perms
 uname -a
 
+# tests waiting for output
+sleep 2; echo hi
+
+# check all env vars
+env
+
 # test invalid code and print it
 # ls /asfj
 
@@ -24,9 +34,9 @@ echo $HOSTNAME
 
 zoa-script 3-more
 
-# copy a file from files/
-# zoa-file main.go /tmp/garbagecan.go
-
 cat >/tmp/trashcan <<EOF
 hello i am a trash can man :3
 EOF
+
+zoa-file test/main /tmp/zoa-file-test
+ls /tmp/zoa-file-test

@@ -1,1 +1,2 @@ 
 uname
+println "hewo i am a kitty"