centos命令

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

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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}