Getting around the "grep revision limit exceeded" in Perforce

P4-RobustGrep

# p4 dirs //depot/* returns all the top level folders 
#
# % means ForEach-Object, e.g. each top level folder from p4 dirs
#
# -s is to quiet the line length > 4096 noise
# -i is to make it case insensitive
# -e is followed by the search expression
# and the last argument is the path to search

p4 dirs //depot/* | % { p4 grep -s -i -e "search expression" "$_/..." }

Or in bash:

for dir in $(p4 dirs //depot/trunk/*); do
  p4 grep -s -i -e 'search expression' $dir/...
done

This isn't exactly robust. If your top-level dir branches out into other dirs and each dir has > 10k entries, this will not work