Use febootstrap-run properly.

[febootstrap.git] / examples / minimal-filesystem.sh

diff --git a/examples/minimal-filesystem.sh b/examples/minimal-filesystem.sh
index 74a4c2c..497d209 100755 (executable)
--- a/examples/minimal-filesystem.sh
+++ b/examples/minimal-filesystem.sh
@@ -12,20 +12,42 @@
 # few command line utilities.  One of the joys of Fedora is that even
 # this minimal install is still 200 MB ...
 
-../febootstrap -i bash -i coreutils fedora-10 ./minimal
+set -e
+
+if [ $(id -u) -eq 0 ]; then
+    echo "Don't run this script as root.  Read instructions in script first."
+    exit 1
+fi
+
+if [ ! -e vmlinuz ]; then
+    echo "Read instructions in script first."
+    exit 1
+fi
+
+../febootstrap -i bash -i coreutils fedora-10 ./minimal $1
+
+# ... but let's minimize it aggressively.
+
+echo -n "Before minimization: "; du -sh minimal
+../febootstrap-minimize --all --pack-executables ./minimal
+echo -n "After minimization:  "; du -sh minimal
 
 # Create the /init which is just a simple script to give users an
 # interactive shell.
 
-( cd minimal && cat > init <<'__EOF__'
+create_init ()
+{
+  cat > /init <<'__EOF__'
 #!/bin/sh
 echo; echo; echo
 echo "Welcome to the minimal filesystem example"
 echo; echo; echo
 /bin/bash -i
 __EOF__
-chmod +x init
-)
+  chmod +x /init
+}
+export -f create_init
+../febootstrap-run ./minimal -- bash -c create_init
 
 # Convert the filesystem to an initrd image.
 
@@ -39,6 +61,6 @@ dd if=/dev/zero of=zero bs=2048 count=1
 # Now run qemu to boot this minimal system.
 
 qemu-system-$(arch) \
-  -m 1024 \
+  -m 256 \
   -kernel vmlinuz -initrd minimal-initrd.img \
   -hda zero -boot c