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peterbe/unlessalready.sh

Created June 11, 2018 00:42
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unlessalready.sh
#!/bin/bash
set -eo pipefail
hostandport=$1
shift
curl -s "$hostandport" >/dev/null && \
echo "Already running on $hostandport" && \
exit 1 || exec "$@"
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peterbe commented Jun 11, 2018 •
edited

To install, run:

curl -L -o ~/bin/unlessalready.sh https://gist.github.com/peterbe/0e676a4183167f54da5bf3d670acb7e3/raw/unlessalready.sh
chmod +x ~/bin/unlessalready.sh

Read the blog post for more info.

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