Search for a string and replace value after equals sign
Lets say i have a file ABC.prm with the below contents
$$V_INSERT_CNT=0
$$V_NOCHANGE_CNT=0
$$V_SOURCE_CNT=0
$$V_UPDATE_CNT=0
$$Threshold=100
$$MAX_POST_DT=20140404
I have to update the $$MAX_POST_DT value with a new value present in another file say DATE_FILE.TXT with the below data
20150416
Below is the script to achieve the above requirement. $filepath=$args[0] # Pass the Actual file in our case its ABC.prm $DateFile=$args[1] # pass the date file in this case it is DATE_FILE.TXT
$filepath_BKP = $filepath.split('.')[0] + "_BKP.prm" $orig_param=Get-Content($filepath) $eff_dt=Get-Content($DateFile)
foreach($L in $orig_param) { if($L -match 'MAX_RI_POST_DT=*') { $L -replace '(\d{1,8})',$eff_dt | Out-File -append -NoClobber $filepath_BKP } else { $L | Out-File -append -NoClobber $filepath_BKP } }#Remove the actual file and rename the BKP file below
If(Test-Path "$filepath") { # remove the file below. Remove-Item "$filepath" Write-host "The input file is deleted."
# Rename the file below Rename-Item -Path $filepath_BKP -NewName $filepath Write-host "The output body file is renamed as the input file name." }
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