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也许要考虑标点符号的问题,也就是必须以单词开头,以单词结尾或者单词后面加某些标点(例如,号和.号)。修订版本:
Jackyz-MBP:~ jackyz$ echo "This MerryChris is Chris, that Chris and Chris-Mas is Chris." | tr ' ' '\n' | egrep "^Chris$|^Chris,|^Chris\."
Chris,
Chris
Chris.
Jackyz-MBP:~ jackyz$ echo "This MerryChris is Chris, that Chris and Chris-Mas is Chris." | tr ' ' '\n' | egrep "^Chris$|^Chris,|^Chris\." | wc -l
3
Jackyz-MBP:~ jackyz$ echo "This MerryChris is Chris, that Chris and Chris-Mas is Chris." | xargs -n1 | egrep "^Chris$|^Chris,|^Chris\."
Chris,
Chris
Chris.
Jackyz-MBP:~ jackyz$ echo "This MerryChris is Chris, that Chris and Chris-Mas is Chris." | xargs -n1 | egrep "^Chris$|^Chris,|^Chris\." | wc -l
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