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37 lines
917 B
Bash
Executable File
37 lines
917 B
Bash
Executable File
#!/usr/bin/env bash
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SOCAT_BIN=socat
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SOCAT_ARGS="-d -d pty,raw,echo=0,link=/tmp/pts0 pty,raw,echo=0,link=/tmp/pts1"
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SOCAT_PID_FILE=/tmp/socat.pid
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CURRENT_DIR="$(dirname "$(realpath "$0")")"
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. $CURRENT_DIR/subprocess_helper.sh
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check_preconditions() {
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# check if socat is installed
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## https://stackoverflow.com/questions/592620/check-if-a-program-exists-from-a-bash-script
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if ! [ -x "$(command -v $SOCAT_BIN)" ]; then
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echo '[E] please install $SOCAT_BIN ' >&2
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exit 1
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fi
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}
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# check argument count
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## https://stackoverflow.com/questions/4341630/checking-for-the-correct-number-of-arguments
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if [ "$#" -ne 1 ]; then
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echo "Usage: $0 up|down" >&2
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exit 1
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fi
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check_preconditions
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case "$1" in
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up|start)
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SOCAT_CMD="$(command -v socat) ${SOCAT_ARGS} &"
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run_cmd_save_pid "$SOCAT_CMD" $SOCAT_PID_FILE
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;;
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down|stop)
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kill_pid $SOCAT_PID_FILE
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;;
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esac
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