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:

#!/bin/bash # # Prompt the user to specify a daemon name and save the name to the variable n_prog echo "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 output pro_file_name=status not_connected=65 interval=2 # Search for the process Number of the daemon specified in the n_prog variable pidno=$( 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 null if [ -z "$pidno" ] then echo "The status be stopped..." echo "And belong to not connected" echo exit $not_connected else echo "The status is running..." echo "And belong to connected" echo fi # # If the file corresponding to the specified process exists but the process is not connected, run the if structure statement. while [ true ] do if [ ! -e "/proc/$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 echo done exit 0

Run the ls command to test:

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