Revert commits from PR #2469

[tmedicci]

Summary

echo $? does not return any exit code. This is largely used by automated testing. This PR reverts it until it is properly fixed.

Revert commits from PR #2469

Revert "nsh_fileapp: handle input redirection"

This reverts commit e46347e.

Revert "feat(nsh_cat): allow cat to read from stdin"

This reverts commit 8fba726.

Revert "feat(nsh): add console read"

This reverts commit 4104019.

Revert "feat(nsh): input (stdin) redirection"

This reverts commit 96100b3.

Impact

Fix echo $? bug.

Testing

nsh> ls
/:
 dev/
 proc/
nsh> echo $?
0

Internal CI testing (HW testing with all supported Espressif SoCs)

[acassis]

I will submit a fix to lm3s6965 board

[acassis]

This PR will fix the issue: apache/nuttx#12873

[tmedicci]

Hi @acassis , this PR is not related to the lm3s6965 board. Please, reconsider reviewing it and reverting ASAP.

[tmedicci]

Just to make it clear, @acassis : #2469 make echo $? return nothing even on sim:nsh (all Espressif's defconfig included). it isn't a matter of a specific configuration.

[casaroli]

I will do some testing to verify this

[acassis]

@tmedicci understood in fact the CI still breaking:

https://github.com/apache/nuttx/actions/runs/10322320078/job/28577343134?pr=12873

[tmedicci]

@tmedicci understood in fact the CI still breaking:

https://github.com/apache/nuttx/actions/runs/10322320078/job/28577343134?pr=12873

yes, @acassis . It's breaking not because of the lm3s6965 board. This PR's check finished successfully. Again, please, accept this PR until we have the issue of #2469 solved to stop the CI from failing.

[acassis]

@tmedicci I understood, even the CI is failing:

/github/workspace/sources/nuttx/tools/ci/testrun/script/test_open_posix/test_openposix_.py:9703: AssertionError
----------------------------- Captured stdout call -----------------------------
+------------------------------------------- Catch Exception -------------------------------------------+
+----------------------------------------------- Result ------------------------------------------------+
| Command     : 'echo $?'                                                                               |
| Expect value: ['0']                                                                                   |
| Timeout     : 2s                                                                                      |
| Test result : Timeout                                                                                 |
+-------------------------------------------------------------------------------------------------------+
_____________________ test_ltp_interfaces_sigaction_12_39 ______________________

[casaroli]

Let me try to fix it without reverting. I am doing some testing now.