crt monitor shell

Use shell script to monitor whether a process exists without a startup instance, first on the code dry: #!/bin/shPs-fe|grep processstring |grep-v grepIf [$?-ne 0]Thenecho "START process ..."Elseecho "Runing ..."Fi#####Processstring represents a process feature string that can be queried to a unique process's character string0 indicates the existence of$? -ne 0 does not exist, $? -eq 0 Exists ---------------

' |awk ' {print$2} ' cat_log= ' cat/tmp/shell/ Slave/slave.log|wc-l ' if[${slave_io}=yes];then echo "Slave_io_running:yes" ${test_time}>>/tmp/shell /slave/slave.logelseecho "Slave_IO_Running:No "${test_time}>>/tmp/shell/slave/slave.log/ Usr/local/sendemail/sendemail-v1.56/sendemail-f[emailprotected]-t[emaIlprotected]-xpxxx-ssmtp.163.com-xuxxx-utest-m slave_io_ru

Tags: mem linux shell Shell script Linux ops arppingingRequirements: Use the free command to accurately monitor RAM utilizationKnowledge: GREP,FREE,AWK,BCThe script is as follows[[emailprotected] scripts]# cat mem.sh #!/bin/bash-# free-m represents output in m units, and if the memory is large enough, you should use the-g parameter and the capacity is output in g

$} '#设置交换分区的告警值为20%swap_warn=0.20if (($swap _used! = 0)); Then#如果交换分区已被使用, calculates the percentage of the total of the current remaining swap partition free, in decimal notation, to complement an integer digit before the decimal point 0Swap_per= ' echo ' scale=2;b= $swap _free/$swap _total;if (length (b) ==scale (b)) print 0;print B "|BC"#当前剩余交换分区百分比与告警值进行比较 (1 is returned when the value is less than 20%, and 0 is returned if it is less than)swap_now= ' expr $swap _per \ #如果当前交换分区使用即剩余小于20% (

Any partition used to 90% send a message to the specified recipient, to 95% on the subject of the message Warning (warning), instructions to send mail program email#!/bin/bash#Updated: 2008-03-03 PM by:leif ([email protected])Email=/usr/local/bin/email/bin/df-h >/tmp/df.txtUse= ' Df-h | Grep-o [0-9]*% | Grep-o ' [0-9]\+ 'For I in $USEDoif (($i > 95))Then$EAMIL-S "WARNING low disk space for $i" [e-mail protected] BreakFiif (($i > 90))Then$EMAIL-S "Low disk space for $i" [EMAIL protected] fiDone/b

order of magnitudeif[[$RX-lt1024x768]]; ThenRX="${rx}b/s" elif[[$RX-GT1048576]]; ThenRX=$(Echo$RX |awk '{print $1/1048576 "MB/S"}') $STATUS="Busy" ElseRX=$(Echo$RX |awk '{print $1/1024 "kb/s"}') fi# To determine if the sending traffic is larger than the MB level, the MB units are displayed, otherwise the KB order of magnitudeif[[$TX-lt1024x768]]; ThenTX="${tx}b/s" elif[[$TX-GT1048576]]; ThenTX=$(Echo$TX |awk '{print $1/1048576 "MB/S"}') ElseTX=$(Echo$TX |awk '{print $1/1024 "kb

Label: [Email protected] wyb]#CatJkmysql #!/bin/Bash Status= '/etc/init.d/mysqld status|grepRunning|WC-l ' Process=`PS-ef |grepmysqld|grep-Vgrep|WC-l ' Port= ' Lsof-i:3306|grep-I. listen|WC-l ' MySQL-uroot-p'Test'-E"show databases;">/dev/NULL 2>/dev/NULLa=$?[$a-eq0] [$port-ne0] [$process-ne0] [$status-ne0 ] Echo "MySQL is running"||Echo "MySQL is not running"[ email protected] wyb]# bash Jkmysql MySQL is running [[email protected] wyb]# Shell scri