diff options
| author | Fernando Apesteguía <fernape@FreeBSD.org> | 2020-07-01 16:33:32 +0000 |
|---|---|---|
| committer | Fernando Apesteguía <fernape@FreeBSD.org> | 2020-07-01 16:33:32 +0000 |
| commit | 5dbd4b8e96521244525a0fee29694719c873bd75 (patch) | |
| tree | 0aa8361188427c38901bf2093f31f2d20d2db5a5 /usr.bin/printf/printf.1 | |
| parent | eeada9221b4f5a9a5e1ef2aeb374d6a8506ee068 (diff) | |
Notes
Diffstat (limited to 'usr.bin/printf/printf.1')
| -rw-r--r-- | usr.bin/printf/printf.1 | 51 |
1 files changed, 42 insertions, 9 deletions
diff --git a/usr.bin/printf/printf.1 b/usr.bin/printf/printf.1 index dfc3a718ae02..226b87b61f5a 100644 --- a/usr.bin/printf/printf.1 +++ b/usr.bin/printf/printf.1 @@ -31,7 +31,7 @@ .\" @(#)printf.1 8.1 (Berkeley) 6/6/93 .\" $FreeBSD$ .\" -.Dd July 29, 2019 +.Dd July 1, 2020 .Dt PRINTF 1 .Os .Sh NAME @@ -316,12 +316,48 @@ Consult the manual page. .Sh EXIT STATUS .Ex -std +.Sh EXAMPLES +Print the string +.Qq hello : +.Bd -literal -offset indent +$ printf "%s\en" hello +hello +.Ed +.Pp +Same as above, but notice that the format string is not quoted and hence we +do not get the expected behavior: +.Bd -literal -offset indent +$ printf %s\en hello +hellon$ +.Ed +.Pp +Print arguments forcing sign only for the first argument: +.Bd -literal -offset indent +$ printf "%+d\en%d\en%d\en" 1 -2 13 ++1 +-2 +13 +.Ed +.Pp +Same as above, but the single format string will be applied to the three +arguments: +.Bd -literal -offset indent +$ printf "%+d\en" 1 -2 13 ++1 +-2 ++13 +.Ed +.Pp +Print number using only two digits after the decimal point: +.Bd -literal -offset indent +$ printf "%.2f\en" 31.7456 +31.75 +.Ed .Sh COMPATIBILITY The traditional .Bx behavior of converting arguments of numeric formats not beginning -with a digit to the -.Tn ASCII +with a digit to the ASCII code of the first character is not supported. .Sh SEE ALSO .Xr builtin 1 , @@ -343,8 +379,7 @@ It is modeled after the standard library function, .Xr printf 3 . .Sh CAVEATS -.Tn ANSI -hexadecimal character constants were deliberately not provided. +ANSI hexadecimal character constants were deliberately not provided. .Pp Trying to print a dash ("-") as the first character causes .Nm @@ -364,10 +399,8 @@ and formats with a precision may not operate as expected. .Sh BUGS -Since the floating point numbers are translated from -.Tn ASCII -to floating-point and -then back again, floating-point precision may be lost. +Since the floating point numbers are translated from ASCII +to floating-point and then back again, floating-point precision may be lost. (By default, the number is translated to an IEEE-754 double-precision value before being printed. The |