Shell Programming and Scripting

function FuncCheckService

{
	$ServiceName = 'pgsql-9.2'
	$arrService = Get-Service -Name $ServiceName

		if ($arrService.Status -eq 'Running')
     			{ 
         			Write-Output "$ServiceName service is running"
     			}
		else
   			  { 
        			 Write-Output "$ServiceName service is not running"
     			}
			}

#start transscript to log details
 Start-Transcript -Path "C:\Users\sup_jelborough\Documents\CheckPostgresService.log" -Append -IncludeInvocationHeader

#Call function with EM service as a parameter
 FuncCheckService pgsql-9.2

#stop logging
 Stop-Transcript

 systemctl status postgresql

postgres_db_check=`systemctl status postgresql`

if [ "postgres_db_check" -eq 'Running'
then
	postgres_db_count=1
else
	postgres_db_count=0

echo $postgres_db_count

#!/usr/bin/env pwsh                                                                                                                                             function FuncCheckService                                                       

{
        $ServiceName = 'pgsql-9.2'
        $arrService = Get-Service -Name $ServiceName

                if ($arrService.Status -eq 'Running')
                        { 
                                Write-Output "$ServiceName service is running"
                        }
                else
                          { 
                                 Write-Output "$ServiceName service is not running"
                        }
                        }

#start transscript to log details
 Start-Transcript -Path "C:\Users\sup_jelborough\Documents\CheckPostgresService.log" -Append -IncludeInvocationHeader

#Call function with EM service as a parameter
 FuncCheckService pgsql-9.2

#stop logging
 Stop-Transcript

> ./s1                                    
Start-Transcript : Transcription cannot be started due to the error: Cannot 
find drive. A drive with the name 'C' does not exist.
At line:20 char:2
+  Start-Transcript -Path "C:\Users\sup_jelborough\Documents\CheckPostg ...
+  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : InvalidOperation: (:) [Start-Transcript], PSInva 
   lidOperationException
    + FullyQualifiedErrorId : CannotStartTranscription,Microsoft.PowerShell.Co 
   mmands.StartTranscriptCommand
 
Get-Service : The term 'Get-Service' is not recognized as the name of a 
cmdlet, function, script file, or operable program.
Check the spelling of the name, or if a path was included, verify that the 
path is correct and try again.
At line:7 char:16
+     $arrService = Get-Service -Name $ServiceName
+                   ~~~~~~~~~~~
    + CategoryInfo          : ObjectNotFound: (Get-Service:String) [], Command 
   NotFoundException
    + FullyQualifiedErrorId : CommandNotFoundException
 
pgsql-9.2 service is not running
Stop-Transcript : An error occurred stopping transcription: The host is not 
currently transcribing.
At line:26 char:2
+  Stop-Transcript
+  ~~~~~~~~~~~~~~~
    + CategoryInfo          : InvalidOperation: (:) [Stop-Transcript], PSInval 
   idOperationException
    + FullyQualifiedErrorId : InvalidOperation,Microsoft.PowerShell.Commands.S 
   topTranscriptCommand

OS, ker|rel, machine: Linux, 3.16.0-4-amd64, x86_64
Distribution        : Debian 8.9 (jessie) 
pwsh PowerShell v6.0.0-beta.9

pwsh    PowerShell command-line shell and .NET REPL (man)
Path    : /usr/bin/pwsh
Package : powershell
Version : v6.0.0-beta.9
Type    : ELF 64-bit LSB executable, x86-64, version 1 (SYS ...)
Home    : https://github.com/PowerShell/PowerShell/releases/ (doc)

systemctl status <service>

for service in <list of services>
do
   systemctl -q is-active "$service" && echo "$service running" || echo "$service not running"
done

systemctl --help