Timeline for Why can't add the header in the df's output?
Current License: CC BY-SA 4.0
9 events
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| Feb 15 at 11:40 | history | edited | showkey | CC BY-SA 4.0 |
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| Feb 15 at 10:29 | comment | added | Stephen Kitt | @showkey yes, see head eats extra characters for details. | |
| Feb 15 at 9:24 | history | edited | showkey | CC BY-SA 4.0 |
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| Feb 15 at 9:19 | comment | added | showkey | 356*23+(23-19)=8192 | |
| Feb 15 at 9:19 | history | edited | showkey | CC BY-SA 4.0 |
added 201 characters in body
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| Feb 15 at 9:07 | history | edited | showkey | CC BY-SA 4.0 |
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| Feb 15 at 9:05 | comment | added | Kusalananda♦ |
Note that the output from yes is 23 bytes per line. 356 lines is 8188 bytes, and 357 lines is 8211 bytes. With a buffer of 8 KiB, i.e. 8192 bytes, the first head would read a bit more than 356 lines and pass the rest off to the next part of the pipeline. On your system, you can therefore assume that head reads its input in chunks of 8 KiB.
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| Feb 15 at 9:01 | history | edited | showkey | CC BY-SA 4.0 |
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| Feb 15 at 8:47 | history | answered | showkey | CC BY-SA 4.0 |