Today, when i was trying to install some packages i got this error:
dpkg: parse error, in file `/var/lib/dpkg/status’ near line 14938 package `human-theme’:
`Replaces’ field, invalid package name `
E: Sub-process /usr/bin/dpkg returned an error code (2)
i googled it to search for a know solution but got nothing useful this time. so i decieded to think a little bit and try to solve it my self. and here is the solution i got.
i open the file which through the parse error:
# gedit /var/lib/dpkg/status
then i visited the line which given to has the problem and found the name of package has some encoded characters so i removed the non understandable characters and saved the file.
then:
#apt-get -f update
every thing after that went ok. and i enjoyed my ubuntu again.
Salam all,
this about how to convert a flac audio file to a mp3 format to gain the size reduce
you need to have the following packages installed: flac , lame
for ubuntu you can install them by:
$ sudo apt-get install flac lame
for defora
# yum install flac lame
then to convert a flac file to mp3
$ flac -cd filename.flac | lame -h – filename.mp3
- first you need to get the jdbc driver and put it in your lib folder or in any place your build path.
- second use the next code:
Class.forName(“com.mysql.jdbc.Driver”).newInstance();
String url = “jdbc:mysql://hostname:3306/dbname”;
Connection con = DriverManager.getConnection(url,username,password);
Statement st = con.createStatement();
ResultSet rs = st.executeQuery(“your query here”);
while(rs.next())
{
System.out.println(rs.getString(“fieldname”));
}
con.close();
this post is bout how to use the screen command to connect multiusers to the same screen:
first you need to create a new screen and give it a name:
# screen -S screenName
if you want to have multi users able to connect to it, so you need to enable the multiuser mode:
press Ctrl+a
you will find screen command line appears at the bottom of the screen, then type
:multiuser on
and press enter
now you screen is running in multiuser mode and ready to accept other connection
to attach to this screen:
# screen -x screenName
