[neo@test .deploy]$ echo `< /dev/urandom tr -dc A-Z-a-z-0-9 | head -c 8`
GidAuuNN
[neo@test .deploy]$ echo `< /dev/urandom tr -dc A-Z-a-z-0-9 | head -c 8`
UyGaWSKr
		
		

我常常使用这样的随机字符初始化密码

		
[neo@test .deploy]$ echo `< /dev/urandom tr -dc [:alnum:] | head -c 8`
xig8Meym
[neo@test .deploy]$ echo `< /dev/urandom tr -dc [:alnum:] | head -c 8`
23Ac1vZg
[neo@test .deploy]$ echo `< /dev/urandom tr -dc [:digit:] | head -c 8`
73652314
[neo@test .deploy]$ echo `< /dev/urandom tr -dc [:graph:] | head -c 8`
GO_o>OnJ
[neo@test .deploy]$ echo `< /dev/urandom tr -dc [:graph:] | head -c 10`
iGy0FS/aO5
[neo@test .deploy]$ echo `< /dev/urandom tr -dc [:graph:] | head -c 50`
;`E^{5(T4v~5$YovW.?%_?9la<`+qPcRh@7mD\!Whx;MJZVQ\K
[neo@test .deploy]$ echo `< /dev/urandom tr -dc [:print:] | head -c 50`
fy$[#:'(')jt'gp1/g-)d~p]8 :r9i;MO2d!8M<?Qs3t:QgK$O
[neo@test .deploy]$ echo `< /dev/urandom tr -dc [:graph:] | head -c 50`
6SivJ5y$/FTi8mf}rrqE&s0"WkA}r;uK-=MT!Wp0UlL_lF0|bL
		
		

批量生成

		
for i in {1..10}
do
echo `< /dev/urandom tr -dc A-Z-a-z-0-9 | head -c 8`
done
		
		

		
# cat /dev/urandom | tr -cd [:alnum:] | fold -w30 | head -n 20
AVqROzjF6ZATJGv2J6PzDHp3jLpKV4
ONt68UFNDwgXpSnLBV7oRDX3VLRYsX
EZTWCGvZc3mIEeuw9sxMtV8ZkzVRJv
BhUiv0a7utsjZFLYpKGZrY5aDXcZL4
5YfUl2hmDT1O9X61DRYg4wSp4lXoXX
ykyPJxH47PzxnNGlujIUF98ZtB01H0
QyP53mksQN8bCNNo1fSD3RtqhhEGfa
u2RkT1M9GUQF4a6O18tG5WD97OOXze
Whm5X7398Q8L9BONN8k2oLy9CL37JO
TmGQz7WB6WnkjhyB4wrBHBJ3HMIRyf
hww43yvddUDYUnbNOKjhv3sLhCA4YD
uY6zQtBC6miwLUl3jkCVVA0Xu8ASgj
jv58qu46VW7LvRIq4txNE8bG9NBlZl
pzaMkydAiCHCF5H2oQVqMn4DTTYgNL
yoN2A9LyrCwLfjP1ad9HMAwxExJL5i
J27iy2L90m9dpcPLJ8tl46GGb9xqmQ
6YwFCvuPHyyEwnctUTpqLFcvUafVZ2
Nuq9XgIgRQGynjlVqGLMOpO0MkGpsn
tChkRG7eoRuKVXgW7ccTGx45E54K3Y
qPv48XqdGlOrdULCOGZ45kwJ1v5kVX