shmaybe
shmaybe is a retry wrapper that calls a user-supplied command and retries the command if it fails.
Usage
shmaybe <command> <arg> ...
Example
An example of running a custom python script that will randomly fail 75% of the time:
./shmaybe python3 -c 'import random; import sys; x=random.randint(0,4); print("pass") if x==0 else print("fail"); sys.exit(x)'
Which will output:
fail
(1/5) command failed with exit code 2; sleeping for 1
fail
(2/5) command failed with exit code 3; sleeping for 2
pass
Environment Variables
MAX_ATTEMPTS
Controls the maximum number of attempts before permanently failing; defaults to 5.
SLEEP_SECONDS
Controls the number of seconds to sleep before retrying; defaults to 1.
EXPONENTIAL_BACKOFF
Enables or disables the exponential backoff retry mechanism; defaults to true.
When enabled, the SLEEP_SECONDS value is doubled between retries.
License
shmaybe is free and unencumbered software released into the public domain; see Unlicense for details.