# uname -a
SunOS cmsgcc 5.10 Generic_137137-09 sun4v sparc SUNW,SPARC-Enterprise-T5220
# echo "Undelete any open file" > test.txt
# tail -f test.txt &
25552
# Undelete any open file
# rm test.txt
# ls /proc/25552/fd
0 1 2
# cat /proc/25552/fd/0
Undelete any open file
# cp /proc/25552/fd/0 ./test.txt
# cat ./test.txt
Undelete any open file
#