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by mths
1248 days ago
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For that, to start with, you'd need to be able to create a feedback loop of awk's output back to itself as input. For it not to interfere with rendering, it needs to be on a separate file descriptor from stdout. I found this snippet on stackexchange showing how exactly that is possible on Linux. > echo hello | gawk '!length{exit(0)} {print; print substr($0,2) >"/dev/fd/3"; fflush()}' 3>/dev/fd/0 This "renders" on stdout then feeds itself more input on /dev/fd/3. |
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