sudo cat << EOF> File doesn't work, sudo su does

Question

I tried the following on the command prompt in bash:

sudo cat << EOF > /etc/yum.repos.d/some-name.repo
#Content
#....
#...
EOF

It

Answer 1

Output redirection (e.g., >) is performed by bash, not by cat, while running with your UID. To run with root's UID use sudo:

sudo bash -c 'cat << EOF > /etc/yum.repos.d/some-name.repo
line1
line2
line3
EOF'