Find "NaN" values in set of files:
$ find . -type f -name "WATER.txt" | xargs grep "NaN"
$ find . -type f | xargs grep "NaN"
$ grep -rnw . -e "NaN"
r
recursive
n
line number
w
whole word match
e
regex
$ grep -rl . -e "NaN"
l
list only file names of matching files
Find the number of files that have NaN values:
$ grep -rl . -e "NaN" | wc -l
Software Carpentry Windows Installer - includes nano and make
http://files.software-carpentry.org/SWCarpentryInstaller.exe