Reading and writing a file: tee command
95639
Unique sorting: Redirect output to the same file
25681
Piping contents of multiple files between programs while keeping contents separate
17418
How to read and write a file using python?
106600
Execute a command once per line of piped input?
59111
Easiest way to read from and write to files
60864
Include command in output file?
79347
Is it possible to save output from a command to a file after the command already has been executed?
94195
How can I save the command and its execution output to file at the same time
750
Need help to interpret output of free command
16373
How can I send stdout to multiple commands?
36861
How to read the content of a file to a string in C?
53200
How to separate command output to individual lines
111503
How do you read from stdin?
142255
How can I direct a pipe input to ls command?
120669
Explanation of unpredictable behaviour of tee
92727
How do I assign the output of a command into an array?
49223
Write Python stdout to file immediately