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by gloria_mundi
797 days ago
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grep doesn't eat the colours, apt detects that it is not outputting to a TTY and suppresses the colours. Try `printf 'a \e[36mb\e[0m c\n' | grep a`, the colour is preserved just fine. Some tools have an option to force coloured output regardless, e.g. GCC's `-fdiagnostics-color` or grep's own `--colour=always`, but apt doesn't seem to have anything like that. In theory one could have a command in the style of nohup or stdbuf which sets up a PTY to trick the command into outputting colours. So one could run `fakepty apt search whatever | grep another` ... |
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