一键自动往crontab添加条目脚本

脚本的优点：

只要将 监控脚本 被监控程序 和重启脚本放在同一个目录下，并将被监控程序运行起来，即可自动添加到crontab中，建议配置mooon提供的process_monitor.sh一起使用。

#!/bin/sh # writed by yijian on 2013/1/19 # generic script used to install an iterm into crontab # http://code.google.com/p/mooon/source/browse/trunk/common_library/shell/install_crontab.sh # $monitor_name used to monitor the process named by $process_name, # if $process_name is hangup, $monitor_name will reboot it by $start_name. # before using $monitor_name, $process_name should be running, # the installation will get the path information automatically. # **PLEASE NOTE**: all files must be placed in the same directory. process_name=$1    # the fullname of process monitored (but not included directory) monitor_name=$2    # the path of monitor script (maybe included directory) start_name=$3      # the path of start script (maybe included directory) timedate_fields=$4 # five time and date fields me=`whoami` # check cmdline if test $# -ne 4; then echo "usage: process_name monitor_name start_name time_date" echo "EXAMPLE1: $0 mooon process_monitor.sh start_test.sh \"* * * * *\"" echo "EXAMPLE2: $0 mooon /tmp/process_monitor.sh /tmp/start_test.sh \"* * * * *\"" echo "monitor_name or start_name must be in the same directory with process_name, " echo "if monitor_name or start_name don't include directory" exit 1 fi # get pid & username eval $(ps -C $process_name h -o pid,euser | awk -F" " '{ printf("pid=%s\nuser=%s\n",$1,$2); }') if test $? -ne 0; then echo "$process_name NOT RUNNING now" exit 1 fi if test "X$me" != "X$user"; then echo "$process_name NOT RUNNING now" exit 1 fi # get file path filepath=`readlink /proc/$pid/exe` if test $? -ne 0; then exit 1 fi # get directory path binpath=`dirname $filepath` # check files if test -x $monitor_name; then monitor_path=$monitor_name else monitor_path=$binpath/$monitor_name fi if test -x $start_name; then start_path=$start_name else start_path=$binpath/$start_name fi if test ! -x $monitor_path; then echo "$monitor_path not exist" exit 1 fi if test ! -x $start_path; then echo "$start_path not exist" exit 1 fi # install crontab if not exist crontab -l | grep "$start_path" > /dev/null 2>&1 if test $? -ne 0; then crontab -l > crontab.tmp echo -e "\n# the following monitor added by `basename $0`($process_name) on `date +"%Y-%m-%d %H:%M:%S"`" >> crontab.tmp echo "$timedate_fields $monitor_path $process_name $start_path" >> crontab.tmp crontab crontab.tmp if test $? -ne 0; then exit 1 fi rm crontab.tmp fi exit 0