diff --git a/cmd/clean.go b/cmd/clean.go
index 7d5e7045d18e44547b4d19bfc8016357e57b905b..8a1ea9ef4df48fb944e54a181ecf317d7e46d4fb 100644
--- a/cmd/clean.go
+++ b/cmd/clean.go
@@ -9,8 +9,8 @@ import (
 )
 
 func runClean(argv []string) error {
-	const cleanUsage = `Usage: coreos-assembler clean --help
-coreos-assembler clean [--all]
+	const cleanUsage = `Usage: nestos-assembler clean --help
+nestos-assembler clean [--all]
 
 Delete all build artifacts.  Use --all to also clean the cache/ directory.
 `
diff --git a/cmd/coreos-assembler.go b/cmd/coreos-assembler.go
index 02eb892b8ccfa762b9f3076ad26172a58fa427e9..73f60ee7df579f400463d0d2f0517530d69ebe8f 100644
--- a/cmd/coreos-assembler.go
+++ b/cmd/coreos-assembler.go
@@ -53,12 +53,16 @@ func printCommands(title string, cmds []string) {
 }
 
 func printUsage() {
-	fmt.Println("Usage: coreos-assembler CMD ...")
+	fmt.Println("Usage: nestos-assembler CMD ...")
 	printCommands("Build commands", buildCommands)
 	printCommands("Advanced build commands", advancedBuildCommands)
 	printCommands("Platform builds", buildextendCommands)
 	printCommands("Utility commands", utilityCommands)
 	printCommands("Other commands", otherCommands)
+
+	fmt.Printf("\nNotice:\n")
+	fmt.Printf(" For bug reports, please submit an issue at [nestos-assembler](https://gitee.com/openeuler/nestos-assembler).")
+	fmt.Printf(" This software is a fork of [coreos-assembler](https://github.com/coreos/coreos-assembler), licensed under the [Apache-2.0 License](https://www.apache.org/licenses/LICENSE-2.0).\n")
 }
 
 func contains(slice []string, str string) bool {
diff --git a/cmd/update-variant.go b/cmd/update-variant.go
index 9ec4affb75e87de03423779695ca73e3fa77f7eb..c08e3e9f2a47078c71ea2b1290598a90abfca0d7 100644
--- a/cmd/update-variant.go
+++ b/cmd/update-variant.go
@@ -7,7 +7,7 @@ import (
 )
 
 func runUpdateVariant(argv []string) error {
-	const updateVariantUsage = `Usage: coreos-assembler update-variant --help <variant> <version>
+	const updateVariantUsage = `Usage: nestos-assembler update-variant --help <variant> <version>
 
 Update symlinks for manifests in the config repo to use the specified version
 for the given variant.
diff --git a/mantle/cmd/kola/devshell.go b/mantle/cmd/kola/devshell.go
index 3966203a2721c3553c89b67351033e40c054ef7f..e50b99582190b4e7729345364c097566287c5f41 100644
--- a/mantle/cmd/kola/devshell.go
+++ b/mantle/cmd/kola/devshell.go
@@ -38,7 +38,7 @@ import (
 	"golang.org/x/term"
 )
 
-const devshellHostname = "cosa-devsh"
+const devshellHostname = "nosa-devsh"
 
 func stripControlCharacters(s string) string {
 	s = strings.ToValidUTF8(s, "")
diff --git a/mantle/cmd/plume/cosa2stream.go b/mantle/cmd/plume/cosa2stream.go
index 8e35ea62d2d63ff4d5269b76c7d0813af2042358..0caf5a230dc026fb79f0286a29cc5cdb66d8443c 100644
--- a/mantle/cmd/plume/cosa2stream.go
+++ b/mantle/cmd/plume/cosa2stream.go
@@ -134,7 +134,7 @@ func runCosaBuildToStream(cmd *cobra.Command, args []string) error {
 		cosaArgs = append(cosaArgs, "--url="+arg)
 		cosaArgs = append(cosaArgs, "--stream-name="+streamName)
 		cosaArgs = append(cosaArgs, "--output="+releaseTmpf.Name())
-		c := exec.Command("cosa", cosaArgs...)
+		c := exec.Command("nosa", cosaArgs...)
 		c.Stderr = os.Stderr
 		if err := c.Run(); err != nil {
 			return err
diff --git a/src/cmd-build b/src/cmd-build
index 27a40a0991e6dd584d34eafb80714b9bb5392432..f12492405d5d53d04c1b3b7cea6219524ebe5dbd 100755
--- a/src/cmd-build
+++ b/src/cmd-build
@@ -7,8 +7,8 @@ dn=$(dirname "$0")
 
 print_help() {
     cat 1>&2 <<'EOF'
-Usage: coreos-assembler build --help
-       coreos-assembler build [OPTIONS]... [TARGET]...
+Usage: nestos-assembler build --help
+       nestos-assembler build [OPTIONS]... [TARGET]...
 
   Build bootable container (ostree) and image base artifacts from previously fetched packages.
   Accepted TARGET arguments:
diff --git a/src/cmd-build-fast b/src/cmd-build-fast
index 2cc8fcbc9ecca9f170a39075672769553da33dd0..de5b4a0a06e78100768fe6bb3e5f58000609ef42 100755
--- a/src/cmd-build-fast
+++ b/src/cmd-build-fast
@@ -19,7 +19,7 @@ dn=$(dirname "$0")
 
 print_help() {
     cat 1>&2 <<'EOF'
-Usage: coreos-assembler build-fast [--undeploy]
+Usage: nestos-assembler build-fast [--undeploy]
 EOF
 }
 
@@ -63,7 +63,7 @@ if test -e .git; then
         # shellcheck disable=SC2016
         fatal 'This command requires inheriting from a previous full OS build.
 Use e.g. `export COSA_DIR=/path/to/fcos` that has a previous
-run of `cosa build`.'
+run of `nosa build`.'
     fi
     projectdir=$(pwd)
     cd "${COSA_DIR}"
diff --git a/src/cmd-buildextend-metal b/src/cmd-buildextend-metal
index 990210bf57eb901a6f5b12e9f9f52bd5ba19e95f..48af73c78f5c20ddc13f9034f8021144aa9ea584 100755
--- a/src/cmd-buildextend-metal
+++ b/src/cmd-buildextend-metal
@@ -26,8 +26,8 @@ esac
 
 print_help() {
     cat 1>&2 <<EOF
-Usage: coreos-assembler buildextend-${image_type} --help
-       coreos-assembler buildextend-${image_type} [--build ID]
+Usage: nestos-assembler buildextend-${image_type} --help
+       nestos-assembler buildextend-${image_type} [--build ID]
 
   Build a bare metal image.
 EOF
diff --git a/src/cmd-fetch b/src/cmd-fetch
index 165829b7c48b93fcd101c8a4ec4ba5994a731515..aa88cd2c934e140a8b2e88835c5466f25b81e529 100755
--- a/src/cmd-fetch
+++ b/src/cmd-fetch
@@ -19,8 +19,8 @@ fi
 
 print_help() {
     cat 1>&2 <<'EOF'
-Usage: coreos-assembler fetch --help
-       coreos-assembler fetch [OPTIONS]...
+Usage: nestos-assembler fetch --help
+       nestos-assembler fetch [OPTIONS]...
 
   Fetch and import the latest packages.
 
diff --git a/src/cmd-init b/src/cmd-init
index d3d58667643ae04529e96e3cdf4cca39d3af00a4..9d9c38b2875a69c64eee293e389680ed0ef2217e 100755
--- a/src/cmd-init
+++ b/src/cmd-init
@@ -16,8 +16,8 @@ VARIANT=""
 
 print_help() {
     cat 1>&2 <<'EOF'
-Usage: coreos-assembler init --help
-       coreos-assembler init [--force] [--transient] [--branch BRANCH] 
+Usage: nestos-assembler init --help
+       nestos-assembler init [--force] [--transient] [--branch BRANCH] 
                              [--commit COMMIT] [-V/--variant VARIANT]
                              [--yumrepos GITREPO] [--yumrepos-branch BRANCH]
 			     GITCONFIG [SUBDIR]
diff --git a/src/cmd-offline-update b/src/cmd-offline-update
index 146b3616f481a0fcb94d0ada6d93ea59cb60f773..373d70d7523a14bb17f7848bc20054d6205bbb78 100755
--- a/src/cmd-offline-update
+++ b/src/cmd-offline-update
@@ -21,8 +21,8 @@ dn=$(dirname "$0")
 
 print_help() {
     cat 1>&2 <<EOF
-Usage: coreos-assembler offline-update --help
-       coreos-assembler offline-update [--build ID] [--commit COMMIT] DISK
+Usage: nestos-assembler offline-update --help
+       nestos-assembler offline-update [--build ID] [--commit COMMIT] DISK
 
   In-place update DISK to the OSTree commit from the provided build.
 EOF
diff --git a/src/cmd-prune b/src/cmd-prune
index aadd4558317f1b179dbaa3c7557c30a05f527dc1..960d3d79ede1b50bcf90565cbf4534c453981f63 100755
--- a/src/cmd-prune
+++ b/src/cmd-prune
@@ -21,7 +21,7 @@ from cosalib.builds import Builds, get_local_builds
 DEFAULT_KEEP_LAST_N = 3
 
 
-parser = argparse.ArgumentParser(prog="coreos-assembler prune")
+parser = argparse.ArgumentParser(prog="nestos-assembler prune")
 parser.add_argument("--workdir", default='.', help="Path to workdir")
 parser.add_argument("--dry-run", help="Don't actually delete anything",
                     action='store_true')
diff --git a/src/cmd-shell b/src/cmd-shell
index cf3d0f3d7613e573fb4a847859a70b6361cc48c3..9264a5b2bbd930c514437d5e40a970aee08af70b 100755
--- a/src/cmd-shell
+++ b/src/cmd-shell
@@ -3,7 +3,7 @@ set -euo pipefail
 
 if [ $# -eq 0 ]; then
     # If no arguments then offer user bash prompt inside the container
-    exec /usr/bin/env PS1='[coreos-assembler]$ ' /usr/bin/bash
+    exec /usr/bin/env PS1='[nestos-assembler]$ ' /usr/bin/bash
 else
     # They provided arguments so just run the command
     exec "$@"