utmpdump

Dump and load btmp, utmp and wtmp accounting files. More information: https://manned.org/utmpdump.

• Dump the /var/log/wtmp file to stdout as plain text:

utmpdump /var/log/wtmp

• Load a previously dumped file into /var/log/wtmp:

utmpdump -r dumpfile > /var/log/wtmp