loops - I'm trying to create a paging system.This is not the complete code. Getting "path doesn't exist " when running the code -

i'm new powershell, idea on why i'm getting error?

yesterday_date = (get-date).adddays(-1).tostring("yyymmdd")

 $jsb={   $file = 'c:\users\d1\documents\batch\path\$yesterday_date1\page.log'   get-content $file -wait | foreach-object -begin {    $counter = 1   $lines = @(get-content $file).count    } -process {         if ($counter++ -gt $lines) {     write-host $_     }   }     } 

start-job $jsb -name dum

do{ receive-job -name dum | out-file c:\users\path\pager.txt -append }while(1) 

some syntax errors.

1st: missing $ variable yesterday_date. in addition, referring later variable $yesterday_date1, not $yesterday_date. use set-psdebug -strict catch such errors. correct form is

$yesterday_date = (get-date).adddays(-1).tostring("yyymmdd") 

2nd: single quote doesn't evaluate variables in strings. double quotes do. consider:

$file = 'c:\users\d1\documents\batch\path\$yesterday_date\page.log' $file # output c:\users\d1\documents\batch\path\$yesterday_date1page.log  $file2 = "c:\users\d1\documents\batch\path\$yesterday_date1\page.log" $file2  # output c:\users\d1\documents\batch\path\20130520\page.log 

edit:

to address question in comment, problem jobs need special parameter processing. use -arg pass date variable parameter. so,

$yesterday_date = (get-date).adddays(-1).tostring("yyymmdd")  $jsb={   param($date)    $file = "c:\users\d1\documents\batch\path\$date\page.log"    write-host $file }  start-job $jsb -name dummy -arg $yesterday_date wait-job -name dummy receive-job -name dummy # output c:\users\d1\documents\batch\path\20130521\page.log