The subshell does not recognize the path path.

[haitang002]

Here is the use case

cd /root

vi k.sh
#!/bin/ksh
export PATH=.:$PATH:/root/mybin
cur = $(cd /root/mybin; pwd)

ls

cp /bin/ls /root/mybin

This shell script will not be able to execute the last ls; not found ls;
When you comment out the cur line, you can find ls

But there is no problem with this branch: https://github.com/ksh-community/ksh