Setting up TFTP

pxe tftpd dhcpd advanced client identifier http

debian/ubuntu

ls -lF /usr/sbin/in.tftpd
cp -pi /etc/default/tftpd-hpa /etc/default/tftpd-hpa.dist
vi /etc/default/tftpd-hpa

note --listen is already there anyhow, no need to add it to options

TFTP_DIRECTORY="/tftpboot"
RUN_DAEMON="yes"

#TFTP_ADDRESS="0.0.0.0:69"
# -4

    systemctl status tftpd-hpa
    systemctl enable tftpd-hpa
    systemctl restart tftpd-hpa
pgrep -a tftpd
netstat -lntup | grep tftp

slackware

mv -i /etc/inetd.conf /etc/inetd.conf.dist
grep '^# tftp' /etc/inetd.conf.dist | sed 's/^# //' > /etc/inetd.conf

for the record, the content will be

tftp  dgram   udp     wait    root    /usr/sbin/in.tftpd  in.tftpd -s /tftpboot -r blksize

chmod +x /etc/rc.d/rc.inetd
/etc/rc.d/rc.inetd restart
pgrep -a inetd

rhel

vi /etc/xinetd.d/tftp

disable = no