Take the 2-minute tour ×
Super User is a question and answer site for computer enthusiasts and power users. It's 100% free, no registration required.

I tried this command to print the buffer of an existing screen session to stdout but I don't know why it doesn't print anything.

screen -x lftp -X hardcopy /dev/fd/1
screen -x lftp -X hardcopy /dev/stdout

It works if I use a regular file instead, so why doesn't it print to stdout when I use /dev/fd/1? I do this with other applications don't have an option to write to stdout and it works, so what does GNU/Screen do that makes it not work?

share|improve this question

1 Answer 1

up vote 1 down vote accepted

It probably doesn't work in this case because the command is sent to the pre-existing screen process, whose stdout is not the same as the stdout of the temporary screen process that you run to connect to the pre-existing screen process. (Disclaimer: this is a guess!)

share|improve this answer

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.