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How do I add a prefix/suffix to each line of a file?

Fresh5 days ago

Mar 15, 202624152 views

Confidence Score0%

Problem

For example, file1 contains: Now I want to add a prefix "file1:" to each line: How can I do that in one command line? I'm using Bash. BTW, the leading space must be preserved, so the Bash built-in read line doesn't work for me.

Error Output

entry1:value1
entry2:value2
entry3:value3

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How do I add a prefix/suffix to each line of a file?

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1 Fix

Fix for: How do I add a prefix/suffix to each line of a file?

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