Linux screen programming, automatic monitoring and sending commands to screen

#!/bin/bash#author:haiy#email:haiyangfu512@gmail.com# Fri Apr 25 13:04:48 CST 2014

# GNU licence. # monitor and keep the program runningDEBUG = falsefunction restart_program () {# send the command to be executed to screen if [$ #-lt 3]; then echo $ # parameters get! Echo usage: bash restart_program session_name window_index_number command exit fi session = $1 window = $2 command = $3 # echo "current session is $ session. $ window_num "screen-x-S $ session-p $ window-X stuff" $ command "} function single_watch () {# check whether a program is running if [$ #-lt 2]; then echo $ # parameters get! Echo usage: bash single_watch program_name running_instance_number exit fi program_name = $1 expected_number = $2 real_number = $ (ps aux | grep "$ program_name" $ | grep-v grep | grep-v $0 | grep -v SCREEN | grep-v vim | wc-l) if [! $ Real_number = $ expected_number]; then echo false else echo true fi} function keep_running () {# read the list of programs to be checked and the session name and window number of the screen to be checked from the file. #$1 is the service_list file with service name, # screen session name and window index #$2 is the sleep duration service_list = $1 sleep_time = $2 while true; do if [$ #-lt 2]; then echo $ # parameters get! Echo usage: bash check_running_service list_file sleep_time exit fi # read the checked service list from the file while read line; do IFS = '; 'read-a content <"$ line" session = $ (echo "$ {content [0]}") window = $ (echo "$ {content [1]}") program = $ (echo "$ {content [2]}") if $ DEBUG; then echo session, $ session, echo window, $ window, echo program, $ program fi stat =$ (single_watch "$ program" 1) if [$ stat = "false"]; then echo "'date' Gonna restart $ program... "restart_program $ session $ window" $ program "# echo" $ program. "> mail_content # python gmail_sender.py

# Send an email .... Else echo "'date' ==>$ line ==> Running normally. "fi done <$ service_list if $ DEBUG; then exit fi echo" I'm gonna sleep a while, $2 .. "sleep $ sleep_time done} if $ DEBUG; then # Here the command shocould be quoted with double quotes restart_program 16902. watch_dog 3 "ls" # single_watch keep_running $1 $2 # session_name = 16902. watch_dog # window_num = 3 # screen-x-S $ session-p $ window_num-X stuff $ commandfiif [$ #-lt 2]; then echo usage: bash keep_running list_file sleep_time exitfikeep_running $1 $2 =========================list_file example: 16902. watch_dog; 2; bash test_loop.sh