madrob commented on code in PR #1328:
URL: https://github.com/apache/solr/pull/1328#discussion_r1096105999
##########
solr/bin/solr:
##########
@@ -2158,6 +2158,35 @@ function mk_writable_dir() {
fi
}
+# Check whether at least one of lsof/netstat/ss are available
+function get_port_tool() {
+ for tool in 'lsof' 'netstat' 'ss'; do
+ which $tool &> nul
+ if [[ $? -eq 0 ]]; then
+ echo $tool
+ return
+ fi
+ done
+}
+
+# Will get the PID of the java process running on the specified port, if one
is running
+# Otherwise empty result. Use get_port_tool to check whether lsof/ss/netstat
is installed first
+function check_port_in_use() {
+ local port=$1
+
+ case $(get_port_tool) in
+ lsof)
+ lsof -iTCP:${port} 2>/dev/null | grep "LISTEN" | grep -Eow
"java\s*?[0-9]+" | grep -Eow [0-9]+
+ ;;
+ ss)
+ ss -ntpa 2>/dev/null | grep ":${port} " | grep 'LISTEN ' | grep -Eow
"\"java\",(pid=)?[0-9]+?" | grep -Eow "[0-9]+"
+ ;;
+ netstat)
+ netstat -nlp 2>/dev/null | grep ":${port} " | grep -Eow " [0-9]+/java" |
grep -Eow "[0-9]+"
+ ;;
Review Comment:
`netstat -nlp` does different things on linux/Mac I think. on my machine I
get the output
```
$ netstat -nlp
netstat: option requires an argument -- p
```
where `-p` is for protocol, but on linux `-p` is for program
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