The above script logs the directory’s top level entries to the console, but my theme folder contained subdirectories which also had files that needed processing. That means that we need to iterate over the array of entries and have the function call itself for any directories it encounters. ...
Arrays have a Where() method on them that allows you to specify a scriptblock for the filter.PowerShell Copy $data.Where({$_.FirstName -eq 'Kevin'}) This feature was added in PowerShell 4.0.Updating objects in loopsWith value types, the only way to update the array is to use a ...
The following script iterates over a file passed to it as an argument. If any lines are found that contain ORA-, an e-mail message is sent to a designated recipient.cat $1 | grep ORA- > alert.err if [ ‘cat alert.err|wc -l‘ -gt 0 ] then mail -s "$0 $1 Errors" ...
Allows to iterate over all elements in the array and perform a given operation for each element of the array.The ForEach() method has several overloads that perform different operations.Syntax Copy ForEach(scriptblock expression) ForEach(scriptblock expression, object[] arguments) ForEach(type...
The $# variable contains the number of arguments in the script. A handy way to iterate through all of the parameters passed involves the use of a while loop and the shift command. This command is what lets you iterate through all the arguments in the argument list (rather than remaining ...
The following example demonstrates how you can use a For loop to iterate over an array of files and rename them. The files in the work_items folder have their work item ID as the filename. The loop iterates through the files to ensure that the ID number is zero-padded to five digits...
Another powerful technique for looping through an array in PowerShell is by using the pipeline with theForEach-Objectcmdlet. The pipeline allows you to pass the array elements to theForEach-Objectcmdlet, which then executes a script block for each element. Here’s an example: ...
13. How do you create a loop in a shell script? Shell scripts can use loops such as the “for” and “while” loops. The “for” loop is used to iterate over a sequence of values, whereas the “while” loop is used to repeat commands as long as a certain condition is true. 14...
Because a hashtable is a collection of key/value pairs, you iterate over it differently than you do for an array or a normal list of items. The first thing to notice is that if you pipe your hashtable, the pipe treats it like one object. PowerShell Copy PS> $ageList | Measure-...
It is possible execute a command from an array, using this feature you have much more flexibility to mount the command with its arguments using arrays. Glob and recursive glob file *.txt Glob in this case works like in bash. for f in g"**/*.txt" { file ${f} } iterate over all ...