glen3b / dotnet-tee Goto Github PK

Currently, -i will also cause the code to ignore EOF and otherwise change behavior to be glitchy. We are aiming to be POSIX compliant using GNU tee as our reference implementation.

We need to implement the POSIX standard - specifically:

• Localization support
• Polishing off argument syntax
• More POSIX-y error messages
• Ensuring more subtle POSIX compliance (e.g. IO)

If a file argument is passed and the program has no rights to write to that file, it crashes with a lethal exception. The GNU tee implementation will exit an error code, but will write to every location it can (in addition to printing a warning). Example of GNU tee:

[glen@UltimateBuilder ~]$ echo apples | tee /root/appleData appleData
tee: /root/appleData: Permission denied
apples
[glen@UltimateBuilder ~]$ echo $?
1
[glen@UltimateBuilder ~]$ cat appleData 
apples

We should aim to behave like this as it is better in every respect - more error tolerant but still unambiguously erroring out.

Command line options, notably -a, which appends to files instead of overwriting them, are not supported as they are in the GNU tee implementation.