系统文件管理与查找-UOS

实验-可执行文件的搜索
which ls

whereis ls

实验-locate搜索
apt-get install -y locate
updatedb
locate passwd

实验-find
find / -name uos1
find / -user hehe
find / -group xiaolizi
find / -perm 644
find / -size +10k
find /etc -size -10k
find /etc -type f/c/b/l/d

对文件进一步操作
rm -rf /tmp/*
find /etc/ -type f -exec cp {} /tmp/ \;

实验-对文件内容的操作
head -5 passwd
tail -5 passwd
more passwd
less passwd

cat passwd |wc -l
wc -l passwd

实验-grep
grep root /etc/passwd
grep ^root /etc/passwd
grep bash$ /etc/passwd
grep -i ROOT /etc/passwd
grep -v root /etc/passwd

sort passwd

uniq 1.txt
paste passwd /etc/passwd


实验-文件的归档
date +"%Y-%m-%d %H:%M:%S"
tar czvf `date +%F`.log.tar.gz /var/log/
tar xzvf 2016-03-09.log.tar.gz -C /tmp/