Install Gentoo VM on Macbook -1

I use Minimum CD, the installation is more hard than using a liveCD, so I failed a bunch of times. And as my learning, I started installation with stage3, so I don't need to catch stage1 and stage2, but even stage3, is a lot to me. Every time with Minimum CD, I have to get stage3 and portage, so at last I save them to another machine that I can easily get with ssh.

0 startup with Minimum CD
 vmware: other linux 2.6.x
         connected: NAT

1 check network
- ifconfig => eth0
- dhcpcd   => some times need it if eth0 did not show ip address
- ssh      => connect with my file server where I save stage3 and portage etc.
 /etc/init.d/sshd start
 ssh 192.168.0.104

2 prepare disks...
- fdisk /dev/sda
 => /dev/sda1 for boot
 => /dev/sda2 for swap
 => /dev/sda3 for / (the root)
 mkfs.ext2 /dev/sda1
 mkfs.ext3 /dev/sda3
 mkswap /dev/sda2
 swapon /dev/sda2
 mount /dev/sda3 /mnt/gentoo
 mkdir /mnt/gentoo/boot
 mount /dev/sda1 /mnt/gentoo/boot

3 install stage3 and portage
 scp -p -r 192.168.0.104:/root/gentoo .
 cd /mnt/gentoo
 tar xjpf stage3-<>.tar.bz2
 tar xjf portage-<>.tar.bz2 -C /mnt/gentoo/usr

4. env setup
 vi /mnt/gentoo/etc/make.conf
 CFLAGS as "-O2 -march=prescott -fomit-frame-pointer -pipe"
 mirrorselect -i -o >> /mnt/gentoo/etc/make.conf
 cp -L /etc/resolv.conf  /mnt/gentoo/etc
 mount -t proc none /mnt/gentoo/proc
 mount -o bind /dev /mnt/gentoo/dev
 chroot /mnt/gentoo /bin/bash
 env-update
 source /etc/profile
 export PS1="{chroot} $PS1"


5. emerge -sync --quiet
  emerge vim lilo subversion

6. vi /etc/fstab
7. network
  vi /etc/conf.d/hostname => "gentoovm"
  vi /etc/conf.d/net => for dhcp: config_eth0="dhcp", but i did not set.
  rc-update add net.eth0 default => boot eth0 as default
  emerge dhcpcd => MUST
  vi /etc/hosts
  => 127.0.0.1 gentoovm.homenetwork gentoovm localhost

8. System
  passwd => MUST
  useradd
  emerge syslog-ng vixie-cron
  rc-update add syslog-ng default
  rc-update add vixie-cron default

9. lilo
  vi /etc/lilo.conf
  prepare the default kernel (from ssh) and save to /boot
  /sbin/lilo

10 reboot

xwd : capture window on linux

xwd is the basic tool to do screen (or window) capture. I used it in my xw manager fvwm2. Here is a shot, but it seems not dump the title part of the window (gvim). Would like to find out the reason.

gcc - shared library

When I link the shared library in dynamic mode on FC5 (Fedoral Core 5), I got a failure when run my executables: "cannot restore segment prot after reloc: Permission denied", is it only happend on FC5?

# make compile
/opt/crosstool/i686-unknown-linux-gnu/gcc-3.4.1-glibc-2.3.3/bin/i686-unknown-linux-gnu-g++ -x c++ -c -Wall -Wno-unknown-pragmas -fno-common -fbounds-check -pipe -g -Wno-deprecated -pipe -o foo.o foo.cpp
/opt/crosstool/i686-unknown-linux-gnu/gcc-3.4.1-glibc-2.3.3/bin/i686-unknown-linux-gnu-g++ -shared -o libfoo.so foo.o -lc
/opt/crosstool/i686-unknown-linux-gnu/gcc-3.4.1-glibc-2.3.3/bin/i686-unknown-linux-gnu-ar -rcs libfoo.a foo.o
/opt/crosstool/i686-unknown-linux-gnu/gcc-3.4.1-glibc-2.3.3/bin/i686-unknown-linux-gnu-g++ -x c++ -c -Wall -Wno-unknown-pragmas -fno-common -fbounds-check -pipe -g -Wno-deprecated -pipe -o test.o test.cpp
/opt/crosstool/i686-unknown-linux-gnu/gcc-3.4.1-glibc-2.3.3/bin/i686-unknown-linux-gnu-g++ -dynamic -L. -lfoo -o test test.o
/opt/crosstool/i686-unknown-linux-gnu/gcc-3.4.1-glibc-2.3.3/bin/i686-unknown-linux-gnu-g++ -static -L. -lfoo -o test.static test.o libfoo.a
# ./test
./test: error while loading shared libraries: ./libfoo.so: cannot restore segment prot after reloc: Permission d[...]

Here is the solution:

# chcon -t textrel_shlib_t ./libfoo.so

version controls with cvs

0. I have a simple script to set my working CVSROOT. So when I work on it. I just run the script.

. cvs.sh

Here is cvs.sh script.(which is just 2 lines)

#! /bin/sh
export CVSROOT=":pserver:user:192.168.10.7:2401/home/repository"

1. Create a branch with tag.

cvs co -P -d foo FOO
cvs tag -b z_markc_unknown

To create a branch, you first need to check out the source code. here FOO is the module name and foo is the checkout directory.

2. Work on a branch.

cvs co -P -d foo -r z_markc_unknown FOO

3. Merge from a branch

cd foo
cvs update -j z_markc_1

It will merge the branch to where you currently work on (can be main trunk or a branch)

4. Commit your changes

cvs update
cvs diff Makefile
cvs commit Makefile

When you merge the code from a branch, it does not commit yet, so you need to commit it.

5. To delete a branch tag. (THIS SHOULD BE VERY CAREFUL!)

cd foo
cvs tag -dB z_markc_1

Work on iPAQ 5550 PocketPC

Use the COM port to connect with PC. On Windows, HyperTerminal is perfact for the connection. In most time, it is desire to work on Linux, here is the way to connect througth ssh on my Linux Host:

ssh root@192.168.10.177

you need to get the ip address, user name and password to enter into the system.
To find out the ip address, you can start the terminal in iPAQ (GPE installed), and type ifconfig.

Copy files forth and back with scp on Linux Host:

scp foo root@192.168.10.177:/home/root
scp -p -r root@192.168.10.177:/home/root/foo foo

Right now my iPAQ's ip address is connected to the wireless network, and is associated with an external ip address (NOT 192*), so it can not ping my internel network, but the linux host can ping the external ip address. That is why scp works.

slckware 12.0 - install Bitstream Vera Fonts

1. Download the font package from here.

Extract it

cd /tmp
tar xjf ~/Desktop/ttf-bitstream-vera-1.10.tar.bz2

2. Copy the font to ~/.fonts

cp -r ttf-bitstream-vera-vera-1.10 ~/.fonts
fc-cache -f -v ~/.fonts
xset fp rehash

Now it's ready to use! just open gvim and select the font.