first commit

scripts/mon_net

@@ -0,0 +1,41 @@
+#!/bin/bash
+
+export LANG=en_US.UTF-8
+LOG_PATH="/var/log/monitor"
+LOG_NAME="net"
+SAR_INTERVAL=50
+SAR_COUNT=6
+
+function Init {
+    local self_count=$(pgrep -cx "$(basename $0)")
+    [ 0 -eq $? ] || exit 1
+    [ 1 -eq $self_count ] || exit 1
+    type sar > /dev/null || exit 1
+    mkdir -p $LOG_PATH || exit 1
+}
+
+function Log {
+    local msg="$1"
+    local log_time="$(date +'%F %T')"
+    local log_file="$LOG_PATH/$LOG_NAME-${log_time% *}.log"
+    echo "$log_time $msg" >> $log_file
+    cd $LOG_PATH && ls ${LOG_NAME}-* 2>/dev/null \
+        | head -n -7 | xargs rm -f
+}
+
+function GetNetInfo {
+    sar -n DEV $SAR_INTERVAL $SAR_COUNT | grep '^Average' \
+        | tail -n +2 | awk '{print $2,$5,-$6}'
+}
+
+function Main {
+    local line=
+    GetNetInfo | while read line; do
+        Log "$line"
+    done
+}
+
+# start
+Init
+Main
+