Run if exists

SQLpipe is a free, open-source tool that can transfer the result of a query, or an entire table, from Oracle to MySQL.If SQLpipe helps you, please consider starring our GitHub repository! It really helps us.Step 1 – Install / run SQLpipeThe easiest way to run SQLpipe is with Docker:docker run --publish 9000:9000 --name sqlpipe sqlpipe/sqlpipeThere are multiple ways to acquire the program, however. You can view all of those ways on the SQLpipe downloads page.Step 2 – Gather connection informationGather the following information for Oracle:HostnamePortDatabase nameUsernamePasswordSchema and table name (for full table transfer) or write a queryGather the following information for MySQL:HostnamePortDatabase nameUsernamePasswordStep 3 – Submit a transfer commandTransferring data is accomplished by sending a POST request to SQLpipe's /transfer/create route. You can send this kind of command any way you want - from an Airflow DAG, a Cron command, or just Curl on your command line. Here is an outline of the kind of payload you must submit:{ "source-name": "", "source-type": "oracle", "source-connection-string": "oracle://:@:/?dba privilege=sysdba", "target-name": "", "target-type": "mysql", "target-connection-string": ":@tcp(:)/", "source-schema": "", "source-table": "", "target-table": "", "drop-target-table-if-exists": true, "create-target-table-if-not-exists": true}Example Curl commandsTo move the result of a query, you can use the following command as a starting command:curl -d '{"source-name": "", "source-type": "oracle", "source-connection-string": "oracle://:@:/?dba privilege=sysdba", "target-name": "", "target-type": "mysql", "target-connection-string": ":@tcp(:)/", "query": "", "target-table": "", "drop-target-table-if-exists": true, "create-target-table-if-not-exists": true}' localhost:9000/transfers/createTo move an entire table (and gain slightly better automatic type inference), you can use the following command as a starting template:curl -d '{"source-name": "", "source-type": "oracle", "source-connection-string": "oracle://:@:/?dba privilege=sysdba", "target-name": "", "target-type": "mysql", "target-connection-string": ":@tcp(:)/", "source-schema":"", "source-table":"", "target-table": "", "drop-target-table-if-exists": true, "create-target-table-if-not-exists": true}' localhost:9000/transfers/createIf the command is successful, the program will tell you that a transfer was queued:{ "query-transfer": { "id": "fd74df7c-b675-47e5-a669-92273028d944", "created-at": "2023-11-21T14:33:18.902930133Z", "status": "queued", "keep-files": false, "tmp-dir": "/tmp/sqlpipe/fd74df7c-b675-47e5-a669-92273028d944", "pipe-file-dir": "/tmp/sqlpipe/fd74df7c-b675-47e5-a669-92273028d944/pipe-files", "final-csv-dir": "/tmp/sqlpipe/fd74df7c-b675-47e5-a669-92273028d944/final-csv", "source-connection-info": { "instance-name": "my-source", "type": "oracle", "hostname": "", "database": "", "username": "" }, "target-connection-info": { "instance-name": "my-target", "type": "mysql", "hostname": "", "database": "", "username": "" }, "drop-target-table-if-exists": true, "create-target-schema-if-not-exists": false, "create-target-table-if-not-exists": true, "source-schema": "mydb_admin", "source-table": "my_table", "target-name": "oracle_my_table", "delimiter": "{dlm}", "newline": "{nwln}", "null": "NULL" }}If you make a mistake submitting the data, SQLpipe will do its best to tell you what's wrong. For example, if you forgot to specify a target table, it would return:{ "error": { "target-table": "must be provided" }}ConclusionYes, it really is that easy!If you’d like more in-depth documentation, or want to let us know about a bug, we please

/etc/profile is invoked only for login shells because that is its specific purpose.If you want a command to run for interactive shells that are not login shells, and you're using bash, put it in ~/.bashrc or /etc/bash.bashrc.The purpose of the "profile" files is to contain commands that ought to be run for login shells only. These files are:/etc/profile, run by all Bourne-compatible shells (including bash and dash) when started as a login shell.Scripts in /etc/profile.d.This is for Bourne-style shells, but it's not coded into the shell executable itself. Rather, commands in /etc/profile calls them. For example, on my Ubuntu 12.04 system, /etc/profile includes these lines:if [ -d /etc/profile.d ]; then for i in /etc/profile.d/*.sh; do if [ -r $i ]; then . $i fi done unset ifi.profile in the user's home directory, run by Bourne-compatible shells when started as a login shell (unless overridden, see below)..bash_profile or .bash_login in the user's home directory. These are ignored by shells other than bash. But if .bash_profile exists, bash runs it instead of .profile. If .bash_profile doesn't exist but .bash_login exists, that is run instead of .profile.(But it is common for .bash_profile or .bash_login, when it exists, to be written to *explicitly call .profile.)The benefit of shell-specific profile files is that they can contain commands or syntax that are only valid for that shell. For example, I can use the [[ evaluation operator in .bash_profile/.bash_login but if I use it in .profile and then log in with dash as my shell, it will

Is checking if a specific registry key exists. This can be done using PowerShell. The Test-Path cmdlet checks if a path exists. Passing the registry key as the argument, PowerShell will return a boolean value if the key exists. This can be used in if statements or as part of a bigger script to perform further actions.To check if a registry key exists using PowerShell, use the following command:$Key = "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\MyApp"If(Test-Path -Path "Registry::$Key") { Write-host -f Green "Key Exists!"}Else { Write-host -f Yellow "Key doesn't Exists!"}Here is my other post on checking the existence of a Registry key or value: Check If a Registry Key Exists using PowerShellCreating a Registry Value Using PowerShellRegistry values store the actual data within a registry key. PowerShell provides the New-ItemProperty cmdlet to create a new registry value. The cmdlet requires specifying the path of the key, the name of the value, and the value data. This enables administrators to configure specific settings or customize software behavior by creating or modifying registry values.To create a registry value using PowerShell, use the following command:New-ItemProperty -Path "Registry::HKEY_LOCAL_MACHINE\SOFTWARE\MyApplication" -Name "Version" -Value "1.0"Similarly, to create DWord or QWord values, use the “PropertyType” parameter.New-ItemProperty -Path "HKLM:\SOFTWARE\MyApp" -Name "Enabled" -Value "1" -PropertyType DWordChecking if a Registry Value ExistsTo check if a registry value exists within a registry key using the Registry PSDrive, we can use the Get-ItemProperty cmdlet. For example, to check if the Version value exists in the HKLM:\SOFTWARE\MyApp registry key, we can run the following command:$Value = Get-ItemProperty -Path 'HKLM:\SOFTWARE\MyApp' -Name 'Version' -ErrorAction SilentlyContinueIf ($value) { # Value exists Write-host -f Green $Value.Version}else { # Value does not exist Write-host -f Yellow "Value doesn't Exists!"}In this example, we use the Get-ItemProperty cmdlet to retrieve the value of the specified registry value name. If the value exists, it will be assigned to the $value variable, allowing you to perform actions accordingly. Here is another version to check if a specific value exists in a given key in the particular hive:$RegPath = "HKLM:\SOFTWARE\MyApp"$RegValue = "Version"$RegistryKey = Get-Item -Path $RegPath -ErrorAction SilentlyContinueif ($RegistryKey.GetValueNames() -contains $RegValue) { # Value exists Write-host -f Green "Value Exists!"}else { # Value does not exist Write-host -f Yellow "Value Doesn't Exists!"}Renaming a Registry Key Value Name in PowerShellYou can use the Rename-ItemProperty cmdlet to rename an existing Registry value. For example, to rename the “Enabled” key value name to “IsEnabled” in the HKEY_LOCAL_MACHINE\SOFTWARE\MyApp Registry key, use the following command:Rename-ItemProperty -Path "HKLM:\SOFTWARE\MyApp" -Name "Enabled" -NewName "IsEnabled"This command renames the “Enabled” key value to “IsEnabled” in the HKEY_LOCAL_MACHINE\SOFTWARE\MyApp Registry key.Updating the Value of a Registry Key Using PowerShellModifying the value of a registry key is a common task in Windows Registry management. PowerShell provides the Set-ItemProperty cmdlet to change the value of a specific registry key. By specifying the path of the key, the name of the value, and the new value data, PowerShell will update the value accordingly.To change the value of a registry key using PowerShell, use the following command:Set-ItemProperty -Path "Registry::HKEY_LOCAL_MACHINE\SOFTWARE\MyApplication" -Name "Version" -Value "2.0"To learn

Are detailed in §10.2.12 and §10.3.8.The literal null cannot be converted to a type given by a type parameter, except if the type parameter is known to be a reference type (§10.2.12). However, a default expression (§12.8.21) can be used instead. In addition, a value with a type given by a type parameter can be compared with null using == and != (§12.12.7) unless the type parameter has the value type constraint.A new expression (§12.8.17.2) can only be used with a type parameter if the type parameter is constrained by a constructor_constraint or the value type constraint (§15.2.5).A type parameter cannot be used anywhere within an attribute.A type parameter cannot be used in a member access (§12.8.7) or type name (§7.8) to identify a static member or a nested type.A type parameter cannot be used as an unmanaged_type (§8.8).end noteAs a type, type parameters are purely a compile-time construct. At run-time, each type parameter is bound to a run-time type that was specified by supplying a type argument to the generic type declaration. Thus, the type of a variable declared with a type parameter will, at run-time, be a closed constructed type §8.4.3. The run-time execution of all statements and expressions involving type parameters uses the type that was supplied as the type argument for that parameter.8.6 Expression tree typesExpression trees permit lambda expressions to be represented as data structures instead of executable code. Expression trees are values of expression tree types of the form System.Linq.Expressions.Expression, where TDelegate is any delegate type. For the remainder of this specification these types will be referred to using the shorthand Expression.If a conversion exists from a lambda expression to a delegate type D, a conversion also exists to the expression tree type Expression. Whereas the conversion of a lambda expression to a delegate type generates a delegate that references executable code for the lambda expression, conversion to an expression tree type creates an expression tree representation of the lambda expression. More details of this conversion are provided in §10.7.3.Example: The following program represents a lambda expression both as executable code and as an expression tree. Because a conversion exists to Func, a conversion also exists to Expression>:Func del = x => x + 1; // CodeExpression> exp = x => x + 1; // DataFollowing these assignments, the delegate del references a method that returns x + 1, and the expression tree exp

3.4 was not downloaded") } } Write-Host ("Creating folders and fetching configuration files and scripts") -ForegroundColor Cyan New-Item -Path "C:\Windows\Utilities\NetworkTracing\Logs" -ItemType Directory -Force | Out-Null (New-Object System.Net.WebClient).DownloadFile(" (New-Object System.Net.WebClient).DownloadFile(" (New-Object System.Net.WebClient).DownloadFile(" & SchTasks.exe /QUERY /TN '\Microsoft\Windows\NetTrace\NetMonCaptures' *>null If ($LASTEXITCODE -eq 1) { Write-Host ("Creating NetMon Capture Scheduled Task") -ForegroundColor Cyan & SchTasks.exe /CREATE /TN '\Microsoft\Windows\NetTrace\NetMonCaptures' /XML C:\Windows\Utilities\NetworkTracing\NetMonCapture.xml *>null If ($LASTEXITCODE -eq 0) { & SchTasks.exe /RUN /TN '\Microsoft\Windows\NetTrace\NetMonCaptures' *>null } Else { Write-Warning ("Failed to create NetMonCapture Scheduled Task") } } Else { Write-Host ("NetMonCapture Scheduled Task already exists") -ForegroundColor Green } & SchTasks.exe /QUERY /TN '\Microsoft\Windows\NetTrace\NetMonCleanUp' *>null If ($LASTEXITCODE -eq 1) { Write-Host ("Creating NetMon Clean Up Scheduled Task") -ForegroundColor Cyan & SchTasks.exe /CREATE /TN '\Microsoft\Windows\NetTrace\NetMonCleanUp' /XML C:\Windows\Utilities\NetworkTracing\NetMonCleanUp.xml *>null If ($LASTEXITCODE -eq 0) { & SchTasks.exe /RUN /TN '\Microsoft\Windows\NetTrace\NetMonCleanUp' *>null } Else { Write-Warning ("Failed to create NetMonCleanUp Scheduled Task") } } Else { Write-Host ("NetMonCleanUp Scheduled Task already exists") -ForegroundColor Green } } END { Get-ChildItem -Name null | Remove-Item -Force Set-Location $CurrentDirectory }