Bart Dorlandt - BAMweb.nl

Here is a one-liner to rename everyfile in the current directory without using the command rename. (this command isn't available on OpenBSD, so I had to use this solution)

for i in ./* ; do mv "$i" `echo "$i" | sed 's/ /_/g'`; done

Empty cd

#!/bin/sh
cdrdao blank --device /dev/hda --driver generic-mmc
eject

Empty dvd

#!/bin/sh
mkdir ~/leeg
growisofs -quiet -Z /dev/dvd -R -J ~/leeg
rmdir ~/leeg

dvd backup

#!/bin/sh
WEEKNR=`date +%V`
growisofs -Z /dev/dvd -R -J -l -V BackUP${WEEKNR} /data/Backup/Server

Here are some extra hints

I use this script with the IF statements because I use subversion to keep control of my scripts and use different machines which do the same tasks.
 

NFS

#!/bin/bash
method1() {
  mount -t nfs -o rsize=8192,wsize=8192,retry=1 <server_IP or DNS>:/data /mnt/nfs
}
method2() {
  mount_nfs -R1 <server_IP or DNS>:/data /mnt/kamer
}

MACHINE=`uname`
if [ "$MACHINE" = "Linux" ]; then
  method1
  else
  if [ "$MACHINE" = "FreeBSD" ]; then
    method2
  fi
fi

Samba

method1() {
  mount -t cifs //<servername>/data /mnt/samba -o user=<remote_username>,uid=<local_username>
}
method2() {
  mount_smbfs -W <work_group> -u <local_username> //<remote_username>@<servername>/data /mnt/samba/
}

MACHINE=`uname`
if [ "$MACHINE" = "Linux" ]; then
  method1
  else
  if [ "$MACHINE" = "FreeBSD" ]; then
    method2
  fi
fi

Rotate image files

#! /bin/sh
DEGREES=$1
if [ "$DEGREES" = "" ] ; then
  echo "Use the script as described below"
  echo "~/script/image/rotate.sh [value]."
else
  mkdir draaien
  for img in `ls *.JPG *.jpg`
  do
    convert -rotate $DEGREES $img draaien/$img
    echo "image $img is turned $DEGREES degrees."
  done
fi

Resize

#! /bin/sh
SIZE=$1
if [ "$SIZE" = "" ] ; then
  echo "Use the script as described below"
  echo "~/script/image/resize.sh [value]."
else
  mkdir resize
  for img in `ls *.jpg *.JPG`
  do
    convert -resize $SIZE $img resize/$img
    echo "$img is adjusted to width:$SIZE, length is adjusted too"
  done
fi

Echo all directories in the subdir: /var/www/upload/foto/albums

for x in `find /var/www/upload/foto/albums -type d ` ; do echo $x  ; done

Go into every directory and execute the script resize. This script can be found here.

for x in `find /var/www/upload/foto/albums -type d` ; do cd $x ; \
    /home/bart/scripts/image/resize.sh 800  ; done

Go into every directory that hasn't the name resize and move all the contents of the directory resize into the directory below.

for x in `find /var/www/upload/foto/albums -type d | grep -v resize`  ; do cd $x ; mv resize/* .  ; done

Remove all empty directories.

find . -depth -type d | xargs rmdir 2>/dev/null

for more examples on how to use find, please take a look here. 

I used this script for FreeBSD and for Linux Ubuntu 6.06. Since I use 7.04 with the Network manager Applet I haven't been using this script anymore. Also because I don't have FreeBSD no more.

Here is a sample config  

#!/bin/bash
# wireless-enable.sh
LinuxWPA() {
  ifconfig eth1 up
  ifconfig eth0 down
  echo "execute wpa_supplicant, sleep 10"
  /sbin/wpa_supplicant -i eth1 -c /etc/conf/wireless/wpa_supplicant.conf -D ipw & >/dev/null  2>&1
  sleep 10
  echo "retrieve IP adress"
  /sbin/dhclient eth1 >/dev/null 2>&1
  ifconfig eth1
}

FreebsdWPA() {
  ifconfig bge0 down
  echo "load drivers"
  # /sbin/kldload -v if_iwi wlan_wep wlan_ccmp wlan_tkip
  /sbin/kldload -v if_iwi wlan_acl wlan_wep wlan_ccmp wlan_tkip
  echo "load firmware"
  /usr/sbin/iwicontrol -i iwi0 -d /boot/firmware -m bss
  echo "execute wpa_supplicant, sleep 10"
  /sbin/wpa_supplicant -i eth1 -c /etc/conf/wireless/wpa_supplicant.conf & >/dev/null  2>&1
  sleep 10
  echo "retrieve IP adress"
  /sbin/dhclient iwi0 >/dev/null 2>&1
  ifconfig iwi0
}

MACHINE=`uname`
if [ "$MACHINE" = "Linux" ]; then
  LinuxWPA
else
  if [ "$MACHINE" = "FreeBSD" ]; then
    FreebsdWPA
  fi
fi