Bug 7040

Summary:	truncate: extend interface (-r & more -s values)
Product:	Busybox	Reporter:	eadmaster <mantoxpub>
Component:	Other	Assignee:	unassigned
Status:	NEW ---
Severity:	enhancement	CC:	busybox-cvs, mantoxpub
Priority:	P5
Version:	1.22.x
Target Milestone:	---
Hardware:	PC
OS:	Linux
Host:		Target:
Build:

Description eadmaster 2014-04-18 01:14:41 UTC

truncate can do inplace trimming and has a better syntax than dd.

An old implementation is here:
http://svn0.us-west.freebsd.org/base/head/usr.bin/truncate/truncate.c

It is based on the POSIX function "ftruncate"
http://pubs.opengroup.org/onlinepubs/009695399/functions/ftruncate.html

Comment 1 Mike Frysinger 2016-02-18 06:55:11 UTC

GNU coreutils provides truncate and has for a while now.  its interface:
http://www.gnu.org/software/coreutils/truncate

Comment 2 eadmaster 2016-02-18 10:22:15 UTC

the applet was added since v1.24.0, but the current implementation is missing the "-r RFILE" switch and does not support size prefixes like "-20" (= reduce by 20 bytes) that are quite useful imo (you can still workaround that using command substitutions btw).