How to check if my system was just rebooted
Answer:
Use the following command
sudo last reboot
And it will show all the reboot information, e.g.
reboot system boot 2.6.27-7-server Sat Jan 2 19:03 - 20:39 (01:35)
...
Jan 022010
Linux Ask!
Jan 022010
How to generate random password?
Answer:
Install the "makepasswd" package, for example, in Ubuntu, type
sudo apt-get install makepasswd
Then execute command
# makepasswd
ShdDHNt7z
Or you can use another tool called pwgen
sudo apt-get install pwgen
and execute
# pwgen 8 10
It will generate 10 passwords with length equal to 8
Jan 022010
Restart Apache web server in Mac OSX
Answer:
Open the terminal, and type
sudo apachectl -k restart
To stop it, type
sudo apachectl -k stop
To start it, type
sudo apachectl -k start
Jan 022010
How to mass rename file in Bash
Answer:
For example, you might want to rename *.htm to *.html, create the following scripts
vi rename.sh
And enter
#!/bin/bash
for f in *.htm; do
mv $f ${f%htm}html
done
Execute the script and it does all the rename magics.
Jan 022010
Where can I find offical Ubuntu Archive Mirrors?
Answer:
Pick a mirror at this url: https://launchpad.net/ubuntu/+archivemirrors
