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29 lines
624 B
Bash
Executable file
29 lines
624 B
Bash
Executable file
#!/bin/bash
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# Expected input from stdin:
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# streamNo delay message
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# Running the following
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#
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# (cat <<EOF
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# 2 1 one\\\\n
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# 1 2 two\\\\n
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# 1 5 four
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# 1 6 \\\\rNo, three..\\\\n
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# EOF
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# ) | ./subprocess.sh
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#
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# Would result in:
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# one (after a delay of 1 sec. on stderr)
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# two (after a delay of another second on stdout)
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# four (after a delay of three more seconds on stdout)
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# No, three.. (overwrites the line with "four" after a second)
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while read line; do
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[[ -z $line ]] && continue
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stream=${line%% *}
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rest=${line#* *}
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delay=${rest%% *}
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message=${rest#* }
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eval "sleep $delay; printf \"$message\" >&$stream" &
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done
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wait
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