1.참고 자료 DESCRIPTION : / file system 100% 일 경우 유용한 command. /tmp: If several large files are here, reboot and they will be cleaned out. /dev: Large files may appear here when trying to write to a device andusing the incorrect device name (i.e. /dev/rsto instead of /dev/rst0) /: Look for core files /var: If var is part of the root partition, check for large administration files in /var/adm. Also, some spool files may be left in the /var/spool directories. Check for other large files (over 1mb) with the command: find / -size +1000000c -xdev -print 2.결론 tape 작업시 누군가 /dev/rst0 를 주었음. 2.X 에서는 /dev/rst0 가 존재하지않음. 따라서 이것이 약 9 M 정도의 file 이 되어 system full 이됨.