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gentcos - Online in the Cloud

Run gentcos in OnWorks free hosting provider over Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator

This is the command gentcos that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator

PROGRAM:

NAME


gentcos - TCOS image boot generator

SYNOPSIS


gentcos [options]

DESCRIPTION


This manpage show options for gentcos boot image generator. See gentcos
-h to better descriptions.

You must exec this app as root user.

gentcos is a shell script that create a TCOS initramfs and optionally a
iso image to boot from it.

OPTIONS


-h

-help Show extended usage about gentcos

-suffix=foo
Suffix used to filenames (default empy)

-vmlinuz=2.6.16-1-486
Kernel version used to create initramfs

-size Print size of uncompressed initramfs ram disk

-allmodules
Generate allmodules.squashfs and copy to /var/lib/tcos/tftp

Then thin client must start with allmodules cmdline to download
it

BOOT METHODS


PXE like method

-tftp Create initramfs-x.x.x (and usr-x.x.x.squashfs) and copy to
/var/lib/tcos/tftp

-o=initramfs-pc1 output filename (in /var/lib/tcos/tftp)

NFS (LTSP like) method

-nfs Create initramfs-x.x.x-nfs and copy to /var/lib/tcos/tftp

-rootfs
Creates an complete TCOS and uncompress in /var/lib/tcos/fs-
x.x.x

NOTE: Need a NFS server (apt-get install nfs-kernel-server) and
this line in /etc/exports:

/var/lib/tcos 192.168.0.0/255.255.255.0
(ro,no_root_squash,sync,no_subtree_check)
(change network data with yours)

Floppy boot method

-nbi Create initramfs (and usr.squashfs) an join with kernel in a nbi
file then copy to /var/lib/tcos/tftp

-nbi-output=linux-pc1.nbi
output filename (in /var/lib/tcos/tftp)

CDROM method

-cdrom Create initramfs and create a bootable iso based on isolunux Iso
image is saved in /var/lib/tcos/isos/

EXAMPLES


PXE like boot (>=64 MB)
# gentcos -tftp -suffix=-pc1

NFS (LTSP like) boot (28-64 MB)
# gentcos -nfs -rootfs

CDROM boot
# gentcos -cdrom

Floppy boot
# gentcos -nbi -extra-append="vga=791 uselocal"

Package cache


Sometimes TCOS need some software that conflicts with installed
packages. To solve this, gentcos can download and extract package
files in /var/cache/tcos/packages/pkg_name to copy files to initramfs.

Howto install a cached package

-instpkg foo
Exec apt-get install --print-uris -y -f foo
get the package URI and uncompress it
into /var/cache/tcos/packages/foo

Remove one or more packages

-rmpkg foo
Remove foo package.

List installed packages

-listpkg
Show all packages installed.

Use gentcos online using onworks.net services


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