<# .SYNOPSIS Creates a new Git branch .DESCRIPTION This PowerShell script creates a new branch in a Git repository and switches to it. .PARAMETER NewBranchName Specifies the new branch name .PARAMETER RepoDir Specifies the path to the Git repository (current working directory per default) .EXAMPLE PS> ./new-branch test123 .LINK https://github.com/fleschutz/PowerShell .NOTES Author: Markus Fleschutz | License: CC0 #> param([string]$NewBranchName = "", [string]$RepoDir = "$PWD") try { if ($NewBranchName -eq "") { $NewBranchName = read-host "Enter new branch name" } $StopWatch = [system.diagnostics.stopwatch]::startNew() "⏳ Step 1/6 - Searching for Git executable... " & git --version if ($lastExitCode -ne "0") { throw "Can't execute 'git' - make sure Git is installed and available" } $RepoDirName = (Get-Item "$RepoDir").Name "⏳ Step 2/6 - Checking folder 📂$RepoDirName... " if (-not(Test-Path "$RepoDir" -pathType container)) { throw "Can't access directory: $RepoDir" } "⏳ Step 3/6 - Fetching updates..." & git -C "$RepoDir" fetch --all --recurse-submodules --prune --prune-tags --force if ($lastExitCode -ne "0") { throw "'git fetch' failed with exit code $lastExitCode" } $CurrentBranchName = (git -C "$RepoDir" rev-parse --abbrev-ref HEAD) if ($lastExitCode -ne "0") { throw "'git rev-parse' failed with exit code $lastExitCode" } "⏳ Step 4/6 - Creating branch '$NewBranchName'..." & git -C "$RepoDir" checkout -b "$NewBranchName" if ($lastExitCode -ne "0") { throw "'git checkout -b $NewBranchName' failed with exit code $lastExitCode" } "⏳ Step 5/6 - Pushing updates..." & git -C "$RepoDir" push origin "$NewBranchName" if ($lastExitCode -ne "0") { throw "'git push origin $NewBranchName' failed with exit code $lastExitCode" } "⏳ Step 6/6 - Updating submodules..." & git -C "$RepoDir" submodule update --init --recursive if ($lastExitCode -ne "0") { throw "'git submodule update' failed with exit code $lastExitCode" } [int]$Elapsed = $StopWatch.Elapsed.TotalSeconds "✔️ created new '$NewBranchName' branch in 📂$RepoDirName repo in $Elapsed sec (based on '$CurrentBranchName' branch)" exit 0 # success } catch { "⚠️ Error in line $($_.InvocationInfo.ScriptLineNumber): $($Error[0])" exit 1 }