oSafin1的专栏

We can use sed to replace some stringfor example:  sed -i s/new_string/old_string/guse grep tosearch filesso:sed -i s/new_string/old_string/g `grep old_string -rl --include="*.html" ./` 

apt-get update         #W: GPG error: http://debian.cn99.com squeeze Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY AED4B06F473041FA NO_PUB

#install kernel headers with right versionapt-get install linux-headers-$(uname -r)#query headers weather install correctlydpkg-query -s linux-headers-$(uname-r) #list kernel version