whoami
host naver.com
naver.com has address 210.89.164.90
naver.com has address 125.209.222.141
naver.com has address 210.89.160.88
naver.com has address 125.209.222.142
naver.com mail is handled by 10 mx2.naver.com.
naver.com mail is handled by 10 mx1.naver.com.
naver.com mail is handled by 10 mx3.naver.com.
which python3
whereis python3
/Library/Frameworks/Python.framework/Versions/3.7/bin/python3
find . | grep "키워드"
grep "키워드" *
( find . -type d -name ".git" && find . -name ".gitignore" && find . -name ".gitmodules" ) | xargs rm -rf
perl -ne 'print "$. $_" if m/[\x80-\xFF]/' */*/*.c
sed -i '' "s/taelee/jehong/g" /
touch file{01..03}.py
//file01.py ~ file03.py 생성