how can i use usb flash memories

care to actually write a proper post??

I see nothing wrong with his/her post... It's a simple question and there is a simple answer.

USB flash memory sticks are shown in Linux as scsi devices (i.e. sda, sdb, sdc and so on). You would mount them with something like: mount -t vfat /dev/sda1 /mnt/flash. sda1 is the first partition in the first scsi device connected to the system (usually they only have one partition). -t defines the filesystem type, for usb flash vfat should work. In addition you might want to set permissions and owner for the files on disk. See man mount.
You can also add line like this:

/dev/sda1 /mnt/flash vfat noauto,users,owner 1 1

to your /etc/fstab. This way you can mount flash with plain mount /mnt/flash and the ownership of the files will be automatically given to the user that mounts the flash.

What's the point of that post? You're a moderator and meant to be helpful for @@@@'s sake. Good grief.

alienDog's advice is spot on. If you're using KDE or Gnome I would also recommend setting up a desktop symlink to the device entry in fstab, e.g. /dev/sdb1. This allows for quick access and unmounting.

Regards,

dkpw