diff --git a/go.mod b/go.mod
index a2b53ea..d5f220f 100644
--- a/go.mod
+++ b/go.mod
@@ -1,3 +1,8 @@
 module lxsameer.com/open
 
 go 1.19
+
+require (
+	github.com/gabriel-vasile/mimetype v1.4.1 // indirect
+	golang.org/x/net v0.0.0-20220624214902-1bab6f366d9e // indirect
+)
diff --git a/go.sum b/go.sum
new file mode 100644
index 0000000..29b3e3c
--- /dev/null
+++ b/go.sum
@@ -0,0 +1,9 @@
+github.com/gabriel-vasile/mimetype v1.4.1 h1:TRWk7se+TOjCYgRth7+1/OYLNiRNIotknkFtf/dnN7Q=
+github.com/gabriel-vasile/mimetype v1.4.1/go.mod h1:05Vi0w3Y9c/lNvJOdmIwvrrAhX3rYhfQQCaf9VJcv7M=
+golang.org/x/net v0.0.0-20220624214902-1bab6f366d9e h1:TsQ7F31D3bUCLeqPT0u+yjp1guoArKaNKmCr22PYgTQ=
+golang.org/x/net v0.0.0-20220624214902-1bab6f366d9e/go.mod h1:XRhObCWvk6IyKnWLug+ECip1KBveYUHfp+8e9klMJ9c=
+golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
+golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
+golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
diff --git a/open.go b/open.go
new file mode 100644
index 0000000..aae4974
--- /dev/null
+++ b/open.go
@@ -0,0 +1,64 @@
+package main
+
+import (
+	"bufio"
+	"fmt"
+	"io/ioutil"
+	"log"
+	"os"
+	"os/exec"
+	"strings"
+
+	"github.com/gabriel-vasile/mimetype"
+)
+
+func main() {
+	if len(os.Args) != 2 {
+		log.Fatal("'open' get's exactly one argument")
+	}
+
+	file := os.Args[1]
+	home := os.Getenv("HOME")
+
+	var prog string
+
+	mtype, err := mimetype.DetectFile(file)
+	if err != nil {
+		log.Fatalf("%v", err)
+	}
+	dirpath := home + "/.open/"
+	os.MkdirAll(dirpath, 0775)
+	opener_file := dirpath + mtype.Extension()
+
+	if _, err := os.Stat(opener_file); err == nil {
+		content, err := ioutil.ReadFile(opener_file)
+		if err != nil {
+			log.Fatalf("%v", err)
+		}
+		prog = string(content)
+	} else {
+		fmt.Printf("Don't know how to open '%s' file. What program should I use? ", mtype.Extension())
+		reader := bufio.NewReader(os.Stdin)
+		prog_string, err := reader.ReadString('\n')
+		if err != nil {
+			log.Fatal(err)
+		}
+		prog_string = string(prog_string[0 : len(prog_string)-1])
+		prog = strings.Clone(prog_string)
+		s := []byte(prog_string)
+		err = ioutil.WriteFile(opener_file, s, 0644)
+		if err != nil {
+			log.Fatal(err)
+		}
+
+	}
+
+	command := strings.Split(prog, " ")
+	out, err := exec.Command(command[0], command[1:]...).Output()
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	fmt.Println(string(out))
+
+}