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How to read a specified line in a text file?
If each line is a fixed length then you can open a Stream around it, seek (bytes per line) * n into the file and read your line from there. Alternatively you could just use the StreamReader to read lines until you found the one you wanted.
How to display the number of lines in a file?
Use a combination of head and tail command in the following function the line number x: You can replace x with the line number you want to display. So, let’s say you want to display the 13th line of the file.
How to print specific lines from a file?
Use SED to display specific lines. The powerful sed command provides several ways of printing specific lines. For example, to display the 10th line, you can use sed in the following manner: sed -n ’10p’ file.txt. The -n suppresses the output while the p command prints specific lines.
How to display specific lines from a file in Linux?
To display line numbers from 20 to 25, you can combine head and tail commands like this: head -25 file_name | tail +20. Or, you can use the sed command like this: sed -n ‘20,25p’ lines.txt. Detailed explanation of each command follows next. I’ll also show the use of awk command for this purpose.
How to read specific lines from a file in Python?
Python provides easy support to read and access the content within the file. Text files are first opened and then the content is accessed from it in the order of lines. By default, the line numbers begin with the 0th index. There are various ways to read specific lines from a text file in python, this article is aimed at discussing them.
How to read 3 lines at once in PowerShell?
-TotalCount 3 tells Get-Content to read 3 lines (at most) in total. -ReadCount 3 additionally tells Get-Content to read all 3 lines at once into an array and send it through the pipeline as a single object – rather than line by line – this isn’t necessary, but speeds up the command.
How to skip two lines in a file?
-Skip 2 instructs Select-Object to skip the first 2 input lines output by Get-Content. -First 1 makes it stop processing right afterwards, so that the rest of the file needn’t be read. A faster approach, IF the portion of the file up to the desired line number is small enough to fit into memory as a whole:
How to extract specific lines from text file?
A simple way of speeding up this solution would be to add -ReadCount 0, which makes Get-Content emit the array of all input lines itself, as a single output object, as opposed to emitting lines one by one and letting (…) collect them in an array afterwards. Thanks for contributing an answer to Stack Overflow!