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e9a910b33c
i currently use the output of sha512sum in several places of xbmk, which is a bit unreliable in case output changes. other cases where i use util outputs in variables are probably reliable, because i'm using mostly posix utilities in those. to mitigate this, i now import suckless sbase, which has a reasonable sha512sum implementation. *every* binary it builds is being placed in build.list, because i'll probably start using more of them. for example, i may start modifying the "date" implementation, adding the GNU-specific options that i need as mentioned on init.sh i'm importing it in util/ because the sha512sum util is needed for verifying project sources, so if sbase itself is a "project source", that means we can into a chicken and egg bootstrapping problem. this is sbase at revision: 055cc1ae1b3a13c3d8f25af0a4a3316590efcd48 Signed-off-by: Leah Rowe <leah@libreboot.org>
85 lines
1.2 KiB
Groff
85 lines
1.2 KiB
Groff
.Dd October 5, 2016
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.Dt TR 1
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.Os sbase
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.Sh NAME
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.Nm tr
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.Nd translate characters
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.Sh SYNOPSIS
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.Nm
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.Op Fl c | Fl C
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.Op Fl sd
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.Ar set1 set2
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.Sh DESCRIPTION
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.Nm
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matches characters from stdin and performs translations to stdout.
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.Sh OPTIONS
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.Bl -tag -width Ds
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.It Fl c | Fl C
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Match to
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.Ar set1
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complement.
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.It Fl d
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Delete characters matching
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.Ar set1 .
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.It Fl s
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Squeeze repeated characters matching
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.Ar set1
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or
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.Ar set2
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if
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.Fl d
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is set.
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.El
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.Sh SET
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.Bl -tag -width Ds
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.It Literal Sy c
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.It Escape sequence Sy \ec
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\e\e, \e', \e", \ea, \eb, \ee, \ef, \en, \er, \et, \ev, \exH[H], \eO[OO]
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.It Range Sy c-d
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.It Repeat Sy [c*n]
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Only in
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.Ar set2 .
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If n = 0 or left out, set n to length of
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.Ar set1 .
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.It Character class Sy [:class:]
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See
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.Xr wctype 3 .
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.It Equivalence class Sy [=c=]
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Resolve to
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.Sy c .
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.El
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.Sh TRANSLATION
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If
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.Fl d
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is not set,
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.Nm
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translates from
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.Ar set1
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to
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.Ar set2
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by index or character class.
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.Pp
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If
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.Ar set2
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is shorter than
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.Ar set1
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or
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.Ar set1
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is a character class,
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overflowing characters translate to the last character in
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.Ar set2 .
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.Sh EXIT STATUS
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.Bl -tag -width Ds
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.It 0
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Input processed successfully.
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.It 1
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An error occurred.
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.El
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.Sh SEE ALSO
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.Xr awk 1 ,
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.Xr sed 1 ,
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.Xr utf8 7
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.Sh STANDARDS
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POSIX.1-2013.
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Except from equivalence classes.
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