Test Process status of shell script

Test the network connection status based on the running status of the daemon. This is far better than simply finding the network connection status parameters. The following uses a script to test the status of a specified process name and displays the test result to the standard output. Code :#! /B tests the network connection status based on the running status of the daemon. This is far better than simply finding the network connection status parameter. The following uses a script to test the status of a specified process name and displays the test result to the standard output.

Code:

#!/bin/bash # # Prompt the user to specify a daemon name and save the name to the variable n_progecho "check up progress status"echo -n "Input a name of progress:"read n_prog # # Define constants to define the time interval between parameters that send test results to the standard outputpro_file_name=status not_connected=65 interval=2 # Search for the process Number of the daemon specified in the n_prog variablepidno=$( ps ax |grep -v "ps ax" |grep -v grep|grep $n_prog|awk '{print $1}') # echo "checkingfor \"$n_prog\",please wait..."echo# Determine whether the value of the variable pidno is nullif [ -z "$pidno" ]    then      echo "The status be stopped..."      echo "And belong to not connected"      echo      exit $not_connected    else      echo "The status is running..."      echo "And belong to connected"      echofi# # If the file corresponding to the specified process exists but the process is not connected, run the if structure statement.while [ true ]       do         if [ ! -e "/proc/$pidno/$pro_file_name" ]              then                echo "But he progress is disconnected"                echo                exit $not_connected          fi# Obtain some connection parameters and output them to the standard output    netstat -s |grep "packets received"    netstat -s |grep "packets delivered"# The time interval for displaying a parameter is defined by the variable $ interval.    sleep $interval     echodoneexit 0

Run the ls command to test:

 

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