Just like microsoft active directory, having a centralised authentication server in linux is important especially when you have more than one server or service to manage. Just imagine each service (ssh, samba, httpd…etc) has its own user database… Sooner or later, you will find managing users very difficult. A simple task like deleting a user [...]
It can be annoying that the ‘cp’ command keep prompting if you are to overwrite some files. This is due the cp alias. To fix that,
unalias cp
cp -af source target
done.
sometimes the vmware web access just halted for some reason. A good way to overcome that is to simply restart the vmware web server, ie
/etc/init.d/vmware-mgmt restart
Imagine that we need to mass change the content in certain directory. A combination of find and sed can save the day. It is very to do it in perl as well.
find /your/dir -type f | xargs sed -i ’s/old/new/g’
