kvm | linux | shrink sparse disk using zerofree

Install zerofree edit your fstab, set your root drive to RO like /dev/vda1 / ext2 ro 0 1 Halt your system # halt -p Start your system into the grub menu, then select rescue mode, then drop to root shell Run zerofree like # zerofree /dev/vda1 Remount your root drive RW # mount -o remount,rw […]

BASH | URLENCODE

For each character in string do # IN=”\\”;printf -v OUT ‘%%%02x’ “‘$IN”; echo $OUT or # echo “this & that” | perl -MURI::Escape -ne ‘chomp;print uri_escape($_),”\n”‘

RADIUS server // local authentication and authorization via unix + pam

Yeah, its sucks. Use this option in only secured networks! Check /etc/pam.d for radiusd file. /etc/raddb/clients.conf client 192.168.100.60 { ipv4addr = 192.168.100.60 secret = mysecret shortname = myshortname } /etc/raddb/radius.conf You wanna read /etc/shadow? Become root. —> Yeah, its sucks. Use this option in only secured networks! user = root group = root /etc/raddb/sites-enabled/default Section […]