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Open unblocking FIFO on specified fd in zsh
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| #!/usr/bin/env zsh | |
| set -e | |
| [ -e /tmp/test.fifo ] || mkfifo /tmp/test.fifo | |
| # open the FIFO on fd 3 without blocking | |
| exec 3<> /tmp/test.fifo | |
| zmodload zsh/zselect | |
| if zselect -r 3; then | |
| read -t 0 line <&3 | |
| echo "$line" | |
| fi | |
| # Run in another terminal: | |
| # | |
| # echo 123 > /tmp/test.fifo |
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