Assorted Linux/Ubuntu Gotchas!! 3

To customise Vi Editor
copy /usr/share/vim/vimrc to ~/.vimrc
:syntax on for color highlighting
:set incsearch for incremental search in vi editor

to clear and redraw the screen ^L

To get network info
netstat -lneap | grep tcp
5900 for vnc
21 for ftp

To mount Windows partitions (NTFS) on boot-up, and allow users read and write access

sudo apt-get install ntfs-3g

sudo vi /etc/fstab and add the following

/dev/hda5 /media/windows ntfs-3g defaults,locale=en_US.utf8 0 0

To mount network folder
// /media/freesoft smbfs credentials=/root/.smbcredentials 0 0

To list all ips in a network
nmap -v -sP | grep "appears to be up" | cut -d ' ' -f 2

Install FLash editor for linux

sudo dpkg -i f4lm_0.1-1_i386.deb

If you want to allow other(s) network system to access your
database, you need to make changes in two files : postgresql.conf and

in postgresql.conf file you need to specify IP address(es) to listen on,
with comma seperated. OR ‘*’ for ALL.

listen_addresses = ‘*’
And in pg_hba.conf you need to add the following line at end :
host all all trust

Java 5 doc


#To convert a wav to a mp3 file
sudo apt-get install lame
lame -h -v -b 128 music.wav music.mp3

#To convert all .wav files in a directory
#converts music.wav to music.wav.mp3
ls *.wav | xargs -i lame -h '{}' '{}'.mp3
or to find all files from current dir and subdirs
find . -iname "*.wav" | xargs -i lame -h '{}' '{}'.mp3

#to move files to a new directory
ls |xargs mv --target-directory=../somedir

3 thoughts on “Assorted Linux/Ubuntu Gotchas!!

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  3. Reply Vinay Aradhya Jan 3,2007 2:52 pm

    sudo apt-get install mplayer -y –force-yes
    sudo apt-get install lame -y –force-yes
    ls *.wav | xargs -i lame -h ‘{}’ ‘{}’.mp3
    or to find all files from current dir and subdirs
    find . -iname “*.wav” | xargs -i lame -h ‘{}’ ‘{}’.mp3

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