Differences

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--- powershell:qnd:file_operations [2022/04/04 17:16] – mgupton
+++ powershell:qnd:file_operations [2022/10/06 20:13] (current) – mgupton
@@ Line 1: / Line 1: @@
 ====== File Operations ======
+====== Path References ======
+<code powershell>
+$env:userprofile\Desktop
+$Home\Desktop
+~\Desktop
+</code>
+=== User Split-Path to get folder name ===
+<code powershell>
+cd $(Split-Path $PROFILE)
+</code>
+====== Common Commands By Example ======
+=== List Items with Filter/Search for files with matching string in name ===
+Example of finding a file somewhere in the filesystem and outputting the full path and filename.
+<code powershell>
+Get-ChildItem -Recurse -Filter "csc.exe" | foreach {$_.Fullname}
+</code>
+Use a regex with ''-Match'' operator for more advanced filtering.
+<code powershell>
+gci -Recurse | where {$_.Name -Match "^csc.*"} | foreach {$_.Fullname}
+</code>
+=== List Items ===
+<code powershell>
+$exclude = @("*.log", "*.tmp", "log*.txt")
+$files = ls -Recurse -Exclude $exclude
+Compress-Archive -Path $files -DestinationPath $home\desktop\webagent.zip
+</code>
+<code powershell>
+$base_path = "$home\downloads"
+$exclude_dir_files = @("$base_path\tmp\*",
+  "$base_path\log\*",
+  "*.tmp",
+  "*.log"
+)
+ls -Recurse -Exclude $exclude_dir
+</code>
+Example of using ''-Exclude'' and additional regex filtering with ''-notmatch'' operator. This is useful for excluding folders.
+<code powershell>
+$exclude = @("*.log", "*.tmp", "log*.txt*")
+$files = ls -Recurse -Exclude $exclude
+$files = $files | where {$_.FullName -notmatch ".*\\logs"}
+Compress-Archive -Path $files -DestinationPath $home\desktop\webagent.zip
+</code>
+  * Use the ''-File'' or ''-Directory'' option of ''Get-ChildItem'' to list on those items.
+<code powershell>
+$exclude = @("*.log", "*.tmp", "log*.txt*")
+$files = ls -File -Recurse -Exclude $exclude
+Compress-Archive -Path $files -DestinationPath $home\desktop\webagent.zip
+</code>
 === Search through files for string/grep ===
@@ Line 20: / Line 79: @@
 Example
 <code powershell>
-$file=Get-ChildItem -Path .\* -Exclude "*.tmp, *.log"
+$files = ls -Path .\* -Exclude @("*.tmp", "*.log")
-Compress-Archive -Path $file -DestinationPath $env:userprofile\desktop\webapp1.zip
+Compress-Archive -Path $files -DestinationPath $env:userprofile\desktop\webapp1.zip
 </code>
@@ Line 36: / Line 95: @@
 </code>
+Unzip zip archives contained in another zip archive.
+<code powershell>
+Expand-Archive -DestinationPath .\zips '.\all_reports.zip'
+ls .\zips\ | % {Expand-Archive -DestinationPath $env:temp $_.FullName}
+</code>
+=== Create a folder with name following scheme ===
+<code powershell>
+$suffix = 1
+while ((Test-Path "$env:temp\mg-$suffix") -ne $false) {
+    $suffix += 1
+}
+mkdir "$env:temp\mg-$suffix"
+</code>
+<code powershell>
+$names = @("alpha", "beta", "gamma")
+$name = 0
+while ($name -lt $names.Count) {
+    if ((Test-Path "$env:temp\$names[$name]") -eq $false) {
+        break
+    }
+    $name += 1
+}
+if ($name -eq $names.Count) {
+    $name = 0
+}
+mkdir "$env:temp\$($names[$name])"
+</code>