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43 lines
1.7 KiB
Markdown
43 lines
1.7 KiB
Markdown
[](https://goreportcard.com/report/github.com/Luzifer/waitfor)
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# Luzifer / waitfor
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`waitfor` is a small utility to check the exit code of an command to be used within a shell command.
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## Usage
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```console
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$ waitfor --help
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Usage of waitfor:
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-i, --check-interval duration How long to wait after an unsuccessful check (default 1s)
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-c, --command-timeout duration Stop the command execution after this time
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--log-level string Log level (debug, info, warn, error, fatal) (default "info")
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-s, --shell string Shell to execute with the given command (must accept -c flag) (default "/bin/bash")
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--version Prints current version and exits
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-w, --wait-timeout duration Stop waiting for the command after this time
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```
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When a `wait-timeout` is specified and the check command did not exit with status code 0 before the timeout is reached `waitfor` will exit with status 1. This ensures a shell command connected with `&&` is not executed afterwards.
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## Examples
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- Wait for the VPN connection to be available before executing a command using it
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```console
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$ waitfor 'ip a | grep 10.123.0' && echo "VPN connected"
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```
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- Ensure you are online before executing a curl command
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```console
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$ waitfor -- ping -c 1 8.8.8.8 && curl ...
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```
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- Wait at most 5m for a file to appear before accessing it
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```console
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$ waitfor -w 5m -- ls myfile && cat myfile
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```
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