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os/config/cmdline
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Benjamin S. Allen bfa2592538 Support More Complex Cmdline Configuration 
Fixes . Allows for quoted arguments with spaces in the kernel cmdline to be parsed properly.

An example command line:

```
$ cat /proc/cmdline
earlyprintk=serial console=ttyS0 rancher.autologin=ttyS0 rancher.defaults.hostname=ros-vm1 rancher.defaults.network.dns.nameservers=[192.168.64.1] rancher.network.interfaces.eth0.dhcp=true rancher.network.interfaces.eth1.dhcp=false rancher.network.interfaces.eth1.address=192.168.99.11/24 rancher.state.dev=LABEL=RANCHER_STATE rancher.state.autoformat=[/dev/vda] rancher.state.formatzero cc.ssh_authorized_keys=['ecdsa-sha2-nistp256 AAAAE2VjZHNhLXNoYTItbmlzdHAyNTYAAAAIbmlzdHAyNTYAAABBBOz8mD0tRrNsHBLHD5jVgmXO26JA7eKFZrj4Ic9KR2y3qXlxU9JCYYn/qDyTCmExt8Rw6SaU/BvgU7WT3Bjsi6c=','ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIJj5mkpBHBBAW5XClcB5aFTWph+VCL7I0W8gm93AT5w4','ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQDKfb0O2qXgIgrtD5Mj7fBYdg4jMrT7wetBbkG2e4maDsRR3AtSYjEB3NeEifM8gdvIf0gYs1BNB/Ar76agaQGeqW+Ewb2LWdypr4Ipw09yWCrC9ttVbCnHuzVLYjML0CNgpjIRC+FC5r1X1gm2LufRN4orZ1NQvNhRRWJVT37vRtHo79TecK0DKQmy87Zpj3cNiI/5iObnTk56pZWpIAEiC5hEVkcVxmdkLJs3YonWVZzmK/Y8uvFtF+GhA6Jcpc38zDQHKsOjFWvj3qbWtVEQteNDxsM2pNeXY5wdrhRn4YSdKme9Cm7CdAogIdAdPtqPIfq/jY0QczS12qFZH7zt']
```

Results in:

```
$ sudo ros config export
rancher:
  defaults:
    hostname: ros-vm1
    network:
      dns:
        nameservers:
        - 192.168.64.1
  environment:
    EXTRA_CMDLINE: /init AAAAC3NzaC1lZDI1NTE5AAAAIJj5mkpBHBBAW5XClcB5aFTWph+VCL7I0W8gm93AT5w4','ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQDKfb0O2qXgIgrtD5Mj7fBYdg4jMrT7wetBbkG2e4maDsRR3AtSYjEB3NeEifM8gdvIf0gYs1BNB/Ar76agaQGeqW+Ewb2LWdypr4Ipw09yWCrC9ttVbCnHuzVLYjML0CNgpjIRC+FC5r1X1gm2LufRN4orZ1NQvNhRRWJVT37vRtHo79TecK0DKQmy87Zpj3cNiI/5iObnTk56pZWpIAEiC5hEVkcVxmdkLJs3YonWVZzmK/Y8uvFtF+GhA6Jcpc38zDQHKsOjFWvj3qbWtVEQteNDxsM2pNeXY5wdrhRn4YSdKme9Cm7CdAogIdAdPtqPIfq/jY0QczS12qFZH7zt']
  network:
    interfaces:
      eth0:
        dhcp: true
      eth1:
        address: 192.168.99.11/24
        dhcp: false
  state:
    autoformat:
    - /dev/vda
    dev: LABEL=RANCHER_STATE
    formatzero: true
ssh_authorized_keys:
- ecdsa-sha2-nistp256 AAAAE2VjZHNhLXNoYTItbmlzdHAyNTYAAAAIbmlzdHAyNTYAAABBBOz8mD0tRrNsHBLHD5jVgmXO26JA7eKFZrj4Ic9KR2y3qXlxU9JCYYn/qDyTCmExt8Rw6SaU/BvgU7WT3Bjsi6c=
- ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIJj5mkpBHBBAW5XClcB5aFTWph+VCL7I0W8gm93AT5w4
- ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQDKfb0O2qXgIgrtD5Mj7fBYdg4jMrT7wetBbkG2e4maDsRR3AtSYjEB3NeEifM8gdvIf0gYs1BNB/Ar76agaQGeqW+Ewb2LWdypr4Ipw09yWCrC9ttVbCnHuzVLYjML0CNgpjIRC+FC5r1X1gm2LufRN4orZ1NQvNhRRWJVT37vRtHo79TecK0DKQmy87Zpj3cNiI/5iObnTk56pZWpIAEiC5hEVkcVxmdkLJs3YonWVZzmK/Y8uvFtF+GhA6Jcpc38zDQHKsOjFWvj3qbWtVEQteNDxsM2pNeXY5wdrhRn4YSdKme9Cm7CdAogIdAdPtqPIfq/jY0QczS12qFZH7zt
```
2019-08-30 07:10:55 +08:00
..
cmdline.go Support More Complex Cmdline Configuration 2019-08-30 07:10:55 +08:00