-Bash: ulimit: pipe size: cannot modify limit: Invalid argument,-bashulimit

-Bash: ulimit: pipe size: cannot modify limit: Invalid argument,-bashulimit

When switching from the root account to the oracle account, the following error occurs: "-bash: ulimit: pipe size: cannot modify limit: Invalid argument". This error is generally caused by the setting. bash_profile is not caused by spaces. For example (pay attention to the red part)

Example 1:

If [$ USER = "oracle"]; then
If [$ SHELL = "/bin/ksh"]; then
Ulimit-p 16384
Ulimit-p 65536
Else
Ulimit-u 16384-n 65536
Fi
Fi

Example 2:

If [$ USER = "oracle"]; then
If [$ SHELL = "/bin/ksh"]; then
Ulimit-p 16384
Ulimit-p 65536
Else
Ulimit-u 16384-n 65536
Fi
Fi

I encountered a special case when I helped a colleague read this problem. As shown in the following figure, ulimit-u 16384-n 65536 is missing spaces and this error also occurs, correct syntax: ulimit-u 16384-n 65536