./show-busy-java-threads: line 209: $1: unbound variable

[hlzhang]

I added 'set -exu' at beginning of show-busy-java-threads script and got error as title.

That line is

[ -z "$1" ] && update_count=1 || update_count=${2:-0}

Alpine 3.9 with tools.

apk add --update bc perf procps strace aria2 bash bzip2 ca-certificates curl git gnupg httpie jq nano openssh-client openssl shadow sudo tar unzip vim wget xz zip

[oldratlee]

Not support -eu option yet.

• if you want debug, just add set -x
• if you want embed this tool to your script, invoke command instead embed source code.

[hlzhang]

Thanks!