How Do I Add a Column to a Text File in Linux?
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Type the cat command followed by the file or files you want to add to the end of an existing file. Then, type two output redirection symbols ( >> ) followed by the name of the existing file you want to add to.

How do I add data to a text file in Linux?

You can use the cat command to append data or text to a file. The cat command can also append binary data. The main purpose of the cat command is to display data on screen (stdout) or concatenate files under Linux or Unix like operating systems. To append a single line you can use the echo or printf command.

How do I add a column to a file in Unix?

4 Answers. One way using awk . Pass two arguments to the script, the column number and the value to insert. The script increments the number of fields ( NF ) and goes throught the last one until the indicated position and insert there the new value.

Elena Rostova

Elena Rostova

Lead Health, Wellness & Medical Journalist

Elena Rostova holds a Master's degree in Public Health Journalism. She covers groundbreaking medical research, holistic wellness trends, mental health awareness, and nutritional science.

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