put full example

README.md

@@ -3,13 +3,116 @@ putting them and their necessary libs into a target rootfs directory
 
 example:
 
-```shell
+```
-cargo run -- -v rootfs/ /bin/bash /bin/ls
+rascul@coyote:~/mkroot$ cargo run -- -h
+    Finished dev [unoptimized + debuginfo] target(s) in 0.03s
+     Running `target/debug/mkroot -h`
+mkroot 0.1.0
+rascul <rascul3@gmail.com>
+
+USAGE:
+    mkroot [FLAGS] [OPTIONS] <DIR> <FILES>...
+
+FLAGS:
+    -h, --help       Prints help information
+    -V, --version    Prints version information
+    -v, --verbose    Verbose
+
+OPTIONS:
+        --ldd <LDD>                Path to LDD [default: /usr/bin/ldd]
+        --osname <OSNAME>          OS name (for /etc/os-release) [default: mkroot]
+        --osversion <OSVERSION>    OS version (for /etc/os-release) [default: 1.0]
+
+ARGS:
+    <DIR>         Directory for root filesystem
+    <FILES>...    Files to parse
+
+rascul@coyote:~/mkroot$ cargo run -- -v rootfs /bin/bash /usr/bin/tree
+    Finished dev [unoptimized + debuginfo] target(s) in 0.04s
+     Running `target/debug/mkroot -v rootfs /bin/bash /usr/bin/tree`
+Building root fs for ["/bin/bash", "/usr/bin/tree"] in rootfs
+Checking /bin/bash
+Adding /lib64/libreadline.so.7
+Adding /lib64/libdl.so.2
+Adding /lib64/libc.so.6
+Adding /lib64/libtinfo.so.6
+Adding /lib64/ld-linux-x86-64.so.2
+Checking /usr/bin/tree
+Adding /lib64/libc.so.6
+Adding /lib64/ld-linux-x86-64.so.2
+Creating directory rootfs
+Creating directory rootfs/bin
+Creating directory rootfs/dev
+Creating directory rootfs/etc
+Creating directory rootfs/home
+Creating directory rootfs/lib
+Creating directory rootfs/lib64
+Creating directory rootfs/proc
+Creating directory rootfs/root
+Creating directory rootfs/run
+Creating directory rootfs/sbin
+Creating directory rootfs/sys
+Creating directory rootfs/tmp
+Creating directory rootfs/usr
+Creating directory rootfs/var
+Creating directory rootfs/usr/bin
+Copying /bin/bash to rootfs/bin/bash
+Copying /usr/bin/tree to rootfs/bin/tree
+Copying /lib64/ld-linux-x86-64.so.2 to rootfs/lib64/ld-linux-x86-64.so.2
+Copying /lib64/libc.so.6 to rootfs/lib64/libc.so.6
+Copying /lib64/libdl.so.2 to rootfs/lib64/libdl.so.2
+Copying /lib64/libreadline.so.7 to rootfs/lib64/libreadline.so.7
+Copying /lib64/libtinfo.so.6 to rootfs/lib64/libtinfo.so.6
+Setting linker rootfs/lib64/ld-linux-x86-64.so.2 to mode 0o755
+Creating file etc/os-release
+
+rascul@coyote:~/mkroot$ sudo chroot rootfs /bin/bash
+
+bash-4.4# exit
+exit
+
+rascul@coyote:~/mkroot$ wget -q -O rootfs/sbin/init https://github.com/Yelp/dumb-init/releases/download/v1.2.2/dumb-init_1.2.2_amd64
+
+rascul@coyote:~/mkroot$ chmod 0755 rootfs/sbin/init
+
+rascul@coyote:~/mkroot$ sudo systemd-nspawn -D rootfs/ /sbin/init /bin/bash
+Spawning container rootfs on /home/rascul/mkroot/rootfs.
+Press ^] three times within 1s to kill container.
+Timezone America/Chicago does not exist in container, not updating container timezone.
+
+bash-4.4# tree -x
+.
+|-- bin
+|   |-- bash
+|   `-- tree
+|-- dev
+|-- etc
+|   |-- os-release
+|   `-- resolv.conf
+|-- home
+|-- lib
+|-- lib64
+|   |-- ld-linux-x86-64.so.2
+|   |-- libc.so.6
+|   |-- libdl.so.2
+|   |-- libreadline.so.7
+|   `-- libtinfo.so.6
+|-- proc
+|-- root
+|-- run
+|-- sbin
+|   `-- init
+|-- sys
+|-- tmp
+|-- usr
+|   `-- bin
+`-- var
+    `-- log
+        `-- journal
 
-# chroot
+17 directories, 10 files
-sudo chroot rootfs /bin/bash
 
-# systemd nspawn
+bash-4.4# exit
-wget -O rootfs/sbin/init https://github.com/Yelp/dumb-init/releases/download/v1.2.2/dumb-init_1.2.2_amd64
+exit
-systemd-nspawn -D rootfs /sbin/init /bin/bash
+Container rootfs exited successfully.
 ```