From 2e8e08c631db931baa0b7e11ef28e304f5a3db80 Mon Sep 17 00:00:00 2001
From: Pekka Helenius <fincer89@hotmail.com>
Date: Fri, 19 Feb 2021 13:49:21 +0200
Subject: [PATCH] Add Linux namespace commands

---
 tools/killns.sh | 22 ++++++++++++++++++++++
 tools/psns.sh   | 24 ++++++++++++++++++++++++
 2 files changed, 46 insertions(+)
 create mode 100644 tools/killns.sh
 create mode 100644 tools/psns.sh

diff --git a/tools/killns.sh b/tools/killns.sh
new file mode 100644
index 0000000..5d3aa45
--- /dev/null
+++ b/tools/killns.sh
@@ -0,0 +1,22 @@
+#!/bin/env sh
+
+if [[ ${1} =~ ^(\-h|\-\-help)$ ]] || [[ -z ${1} ]]; then
+  echo "
+Send a signal to a process in specified namespace.
+
+usage: $(basename $0) <signal> <processname> <namespace>
+"
+  exit 0
+fi
+
+signal="${1}"
+processname="${2}"
+namespace="${3}"
+
+for pid in $(sudo ip netns pids ${namespace}); do
+
+  if [[ $(sudo ps -q $pid -o command) =~ ^.*${processname}.* ]]; then
+    sudo ip netns exec ${namespace} kill -${signal} ${pid}
+  fi
+
+done
diff --git a/tools/psns.sh b/tools/psns.sh
new file mode 100644
index 0000000..0166571
--- /dev/null
+++ b/tools/psns.sh
@@ -0,0 +1,24 @@
+#!/bin/env sh
+
+NAMESPACES=( $(ls /run/netns) )
+
+if [[ ${1} =~ ^(\-h|\-\-help)$ ]]; then
+  echo "
+List processes in non-default namespaces.
+"
+  exit 0
+fi
+
+printf "%-25s%-20s%-20s%s%-15s%-30s%s\n" "USER" "PID" "COMMAND" "NAMESPACE"
+echo "--------------------------------------------------------------------------"
+
+for namespace in ${NAMESPACES[@]}; do
+
+  for pid in $(sudo ip netns pids ${namespace}); do
+
+    printf "%-25s%-20s%-20s%s%-15s%-30s%s\n" $(ps -q ${pid} -o uname,pid,comm= | tail -1) ${namespace}
+  done
+
+done
+
+echo "To alter a process, use: $(killns)"