uos　系统文件查找与文件管理

1、实验-可执行文件的搜索

which ls

whereis ls 

2、实验-locate搜索

apt-get  install -y locate
updatedb
locate passwd

3、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

4、对文件进一步操作

rm -rf /tmp/*
find /etc/ -type f -exec cp {} /tmp/ \;

5、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

6、实验-grep

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

sort passwd

uniq 1.txt
paste passwd  /etc/passwd

7、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/