Just before graduation, as there are words thesis requirements, so valid words written a simple script to count the text.
1. Because it is sh script, first check whether the system supports the command
> which sh
Output: / bin / sh # NOTE The system supports sh command
2. The code is as follows :( filename: countNum.sh)
#! / bin / SH
# calculate a digital file, my test file is test.txt, needs according to their own changes to the file
# detect specific number of characters
count_spec = $ (echo "$ ( wc -w test. TXT) "| TR -cd" [0-9] ")
# number of text characters detected
count_all = $ (echo" $ ( wc -m test.txt) "| tr -cd" [0-9] ")
echo $(($count_all-$count_spec))
exit 0
3. Use
sh countNum.sh
4. instructions
The script can count the number of words .txt file, has not been tested for other files, after all, the codec files are different