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16.4.2. Modifying Files with guestfish
To modify files, create directories or make other changes to a guest virtual machine, first heed the warning at the beginning of this section: your guest virtual machine must be shut down. Editing or changing a running disk with guestfish will result in disk corruption. This section gives an example of editing the
/boot/grub/grub.conf file. When you are sure the guest virtual machine is shut down you can omit the --ro option in order to get write access via a command such as:
guestfish -d RHEL3 -i
Welcome to guestfish, the libguestfs filesystem interactive shell for
editing virtual machine filesystems.
Type: 'help' for help on commands
'man' to read the manual
'quit' to quit the shell
Operating system: Red Hat Enterprise Linux AS release 3 (Taroon Update 9)
/dev/vda2 mounted on /
/dev/vda1 mounted on /boot
><fs> edit /boot/grub/grub.conf
Commands to edit files include
edit, vi and emacs. Many commands also exist for creating files and directories, such as write, mkdir, upload and tar-in.
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