运维原则:简单、易用、高效
tree 命令
yum install tree -y
客户端乱码
LANG=en
alias命令
alias cls='clear'
永久别名
cat root/.bashrc
vi /root/.bashrc
su root重新登录
WHICH\FIND\管道
which clear
whereis cp
which cp
find / -type f -name "cat"
find -type f -name "*.txt" -exec rm -f {} \;
find -type f -name "*.txt"|xargs rm -f
echo abc|grep a|grep -v d|grep -v a
find -mtime +1|xargs rm -rf
+1是一天之前,4只是4天前的一天|-4是最近4天
seq
seq -s "," 30
seq 30
seq -s "," 3 9
seq -s "," 3 2 9
head\tail\sed
20到30行
head -30 0.txt|tail -n 11
tail -n 81 0.txt|head -11
sed -n 20,30p 0.txt
awk '{if(NR>19&&NR<31) print $0}' 0.txt
awk '{if(NR==19) print $0}' 0.txt
awk -F ":" '{print $1}' /etc/passwd
sed -i s#world#china#g ./test0/0.txt
find -type f -name *.txt|xargs sed -i s#hello#hi,#g
echo {1..6}