Here are few basic Linux tips I've found handy.
Display Disk Filesystem Usage
df
Restart the network interface - (from RedChina)
ifconfig eth0 up or down and then up
If you need dhcp, after it's up, type dhclient eth0, or pump eth0, or dhcpcd eth0, whatever client you use. Fedora core and up uses dhclient, older Redhats used dhcpd, and I believe Gentoo uses pump.
Install SpeedStream 1020 Network Card
Run modconf
Then add the net->tulip kernel module
Listing Folders from FAT32
You need to set the chmod to a+x.