A Script Problem

[ericfjchen]

Can you kindly explain the following meaning?
==========
exec 2>> /tmp/informixbk 1>&2
==========

Thanks

Eric

[H.Merijn Brand (procura]

From this point on, redirect all output from stderr (2) and stdout (1) to be appended (>>) to file /tmp/informixbk


Enjoy, have FUN! H.merijn

[Trond Haugen]

1>&2 redirects all standard out to standard error.
exec 2>> /tmp/informixbk sends/appends all standard errors to the file from now on.

The two send all output to the file.

Regards,
Trond

[T G Manikandan]

exec is used to avoid creating new process,
then it specifies that redirect the output and error messages into /tmp/informixbk

[Muthukumar_5]

exec command without any argument will modify file descriptors as prescribed by the input/output redirection list.

exec 2>> /tmp/informixbk 1>&2 means,

Current shell's input and output will be redirected , appended to /tmp/informixbk there.

>> - appends to a file

Try to check as,
exec 2>> /tmp/informixbk 1>&2 &
so that it will be running in background there.

exec hostname;hai 2>> /tmp/informixbk 1>&2 &