Soluții

How to Parse CSV Data in Bash

• Data 15/09/2022
• Autor scorus adrian
• -2
• 389

A Comma Separated Values file is a text file that holds tabulated data. CSV is a type of delimited data. As the name suggests, a comma “,” is used to separate each field of data—or value—from its neighbors.

CSV is everywhere. If an application has import and export functions, it’ll almost always support CSV. CSV files are human-readable. You can look inside them with less, open them in any text editor, and move them from program to program. For example, you can export the data from an SQLite database and open it in LibreOffice Calc.

However, even CSV can become complicated. Want to have a comma in a data field? That field needs to have quotation marks “"” wrapped around it. To include quotation marks in a field each quotation mark needs to be entered twice.

Of course, if you are working with CSV generated by a program or script that you have written, the CSV format is likely to be simple and straightforward. If you’re forced to work with more complex CSV formats, with Linux being Linux, there are solutions we can use for that too.

How to Trap Errors in Bash Scripts on Linux

• Data 15/09/2022
• Autor scorus adrian
• -3
• 308

How to List All Users In a Group on Linux

• Data 15/09/2022
• Autor scorus adrian
• 1
• 312

Files and directories on Linux have a set of permissions for the owner, another set for the group the file is allocated to, and permissions for everyone who isn’t in one of the previous two categories. Each set of permissions defines whether the members of that category can read, write, or execute the file. In the case of a directory, the execute action equates to being able to cd into the directory.

The default group for a file or directory is the default group of the owner. That’s usually the person who created it. The group permissions are used to allow a collection of users to have controlled access to the files and directories of the other members of that group.