Hi,
On 07/02/2022 15:36, Subhaditya Nath wrote:
Run this -
/usr/bin/printf '\x1b[31m%s\x1b[m\n' FAIL
It should print FAIL in red foreground color.
It does, on other shells.
In dash, it doesn't.
Hexadecimal escape sequences are not specified by POSIX. They are a
common extension in other shells as you noticed but dash generally
limits itself to what POSIX specifies. Octal escape sequences are part
of the standard and supported by dash, and offer the same functionality:
printf '\033[31m%s\033[m\n' FAIL
Cheers,
Harald van Dijk
