I have a series of files in a folder that contain large log files
-20180907 1229 debug.log -20180907 1229 system.log
I want to write a PowerShell script to archive them down in size. Here's my script:
dir *.log | % {
$archive = '"' + $_.Name + '.7z"'
$archive
$source = '"' + $_.Name + '"'
$source
&"C:\Program Files\7-Zip\7z.exe" -mx9 a -t7z $archive $source -WhatIf
}
When I run it, however, I get the following output:
"-20180907 1229 debug.log.7z" "-20180907 1229 debug.log" 7z.exe : At C:\Users\User\Temporary\Test 7z\archive-logs.ps1:6 char:5 + &"C:\Program Files\7-Zip\7z.exe" -mx9 a -t7z $archive $source + ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + CategoryInfo : NotSpecified: (:String) [], RemoteException + FullyQualifiedErrorId : NativeCommandError Command Line Error: Unknown switch: -20180907 1229 debug.log.7z "-20180907 1229 system.log.7z" "-20180907 1229 system.log" 7z.exe : At C:\Users\User\Temporary\Test 7z\archive-logs.ps1:6 char:5 + &"C:\Program Files\7-Zip\7z.exe" -mx9 a -t7z $archive $source + ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + CategoryInfo : NotSpecified: (:String) [], RemoteException + FullyQualifiedErrorId : NativeCommandError Command Line Error: Unknown switch: -20180907 1229 system.log.7z
Even though I am wrapping the file name in double quotes it appears as 7-Zip is ignoring the double quotes.
Any ideas?
I tried this variant (wrapping the file names in single quotes):
dir *.log | % {
$archive = "'" + $_.Name + ".7z'"
$archive
$source = "'" + $_.Name + "'"
$source
&"C:\Program Files\7-Zip\7z.exe" -mx9 a -t7z $archive $source
}
And this time I got this output:
'-20180907 1229 debug.log.7z' '-20180907 1229 debug.log' 7-Zip 18.05 (x64) : Copyright (c) 1999-2018 Igor Pavlov : 2018-04-30 Open archive: '-20180907 1229 debug.log.7z' -- Path = '-20180907 1229 debug.log.7z' Type = 7z Physical Size = 32 Headers Size = 0 Solid = - Blocks = 0 Scanning the drive: 7z.exe : At C:\Users\User\Temporary\Test 7z\archive-logs-B.ps1:6 char:5 + &"C:\Program Files\7-Zip\7z.exe" -mx9 a -t7z $archive $source + ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + CategoryInfo : NotSpecified: (:String) [], RemoteException + FullyQualifiedErrorId : NativeCommandError WARNING: The system cannot find the file specified. '-20180907 1229 debug.log' 0 files, 0 bytes Updating archive: '-20180907 1229 debug.log.7z' Add new data to archive: 0 files, 0 bytes Files read from disk: 0 Archive size: 32 bytes (1 KiB) Scan WARNINGS for files and folders: '-20180907 1229 debug.log' : The system cannot find the file specified. ---------------- Scan WARNINGS: 1
It's created files like '-20180907 1229 debug.log.7z'
, but with no content.
Try this:
$executable = "C:\Program Files\7-Zip\7z.exe"
dir *.log | % {
$archive = "$($_.Name).7z"
$archive
$source = $_.Name
$source
$oneliner = "a",".\$($archive)",".\$($source)", "-mx4"
& $executable @oneliner
}