color grep less

Add this in your bashrc

alias grep='grep --color=always';
alias less='less -R';

find multiple files

find . -name file1.txt  -o -name file2.txt -o -name file3.txt

sync date time with ntp client

ntpdate -u ntp.host.com

gentoo add user

Add a new user called ‘username’ to users and wheel group, the wheel group will allow you to su

useradd -m -G users,wheel username

then

passwd username

gentoo apache2 userdir

edit file

/etc/conf.d/apache2

append

-D USERDIR

to APACHE2_OPTS