RHEL和Debian上生成随机密码-mkpasswd

mkpasswd 在基于 RHEL 的系统上随 expect 软件包一起安装。
在基于 Debian 的系统上 mkpasswd 则在软件包 whois 中。

root@kerneltalks# mkpasswd << on RHEL
zt*hGW65c
root@kerneltalks# mkpasswd teststring << on Ubuntu
XnlrKxYOJ3vik

root@kerneltalks # openssl rand -base64 10
nU9LlHO5nsuUvw==

root@kerneltalks # strings /dev/urandom |tr -dc A-Za-z0-9 | head -c20; echo
UiXtr0NAOSIkqtjK4c0X

root@kerneltalks# dd if=/dev/urandom bs=1 count=15|base64 -w 0
15+0 records in
15+0 records out
15 bytes (15 B) copied, 5.5484e-05 s, 270 kB/s
QMsbe2XbrqAc2NmXp8D0

root@kerneltalks # dd if=/dev/urandom bs=1 count=15 2>/dev/null|base64 -w 0
F8c3a4joS+a3BdPN9C++


root@kerneltalks # date |md5sum
4d8ce5c42073c7e9ca4aeffd3d157102  -

pwgen 软件包在类似 EPEL 软件仓库

root@kerneltalks # pwgen
thu8Iox7 ahDeeQu8 Eexoh0ai oD8oozie ooPaeD9t meeNeiW2 Eip6ieph Ooh1tiet
cootad7O Gohci0vo wah9Thoh Ohh3Ziur Ao1thoma ojoo6aeW Oochai4v ialaiLo5
aic2OaDa iexieQu8 Aesoh4Ie Eixou9ph ShiKoh0i uThohth7 taaN3fuu Iege0aeZ
cah3zaiW Eephei0m AhTh8guo xah1Shoo uh8Iengo aifeev4E zoo4ohHa fieDei6c
aorieP7k ahna9AKe uveeX7Hi Ohji5pho AigheV7u Akee9fae aeWeiW4a tiex8Oht

root@kerneltalks # gpg --gen-random --armor 1 12
mL8i+PKZ3IuN6a7a