pdksh-5.2.14-36.el5.i386.rpm
下载地址进：
搜索pdksh这个包，找一个适合你操作系统版本的，然后安装即可
# rpm -ivh pdksh-5.2.14-36.el5.i386.rpm
warning:pdksh-5.2.14-36.el5.i386.rpm: Header V3 DSA signature: NOKEY, key ID e8562897
error: Failed dependencies:
pdksh conflicts withksh-20060214-1.7.i386
conflicts：冲突的意思
如果和 ksh有冲突，可以用
#rpm -e ksh 把ksh卸载掉
# rpm -e ksh
# rpm -ivh pdksh-5.2.14-36.el5.i386.rpm
warning:pdksh-5.2.14-36.el5.i386.rpm: Header V3 DSA signature: NOKEY, key ID e8562897
Preparing... ########################################### [100%]
1:pdksh ########################################### [100%]