Simon Tatham's miscellaneous utilities collection

This web page presents a collection of small Unix-based utility programs which I wrote for myself and found useful. Many of these are programs I ended up giving copies of to other people because they found them useful too; so now I'm publishing the whole lot to the world just in case anyone else wants them.

The utilities

Click on the name of each utility to see its man page.

after

Wait for the termination of an unrelated process (specified by pid), and return its exit code too if possible. (Not very portable.)

base64

Simple stand-alone converter between base64 (RFC 2045) and ordinary binary data.

beep

Produce a beep, by any means necessary (tries the X server, /dev/tty and standard output). More reliable than "echo -ne '\007'", and doesn't pollute redirected output files.

buildrun

Wait to run one program until a run of a previous one has completed successfully. Useful for synchronising build and test commands running in different terminal windows.

cvt-utf8

Convert between Unicode code points and the UTF-8 encoding. Also looks up each code point in the Unicode Character Database and/or the Unihan Database, and displays its name and/or definition.

lns

User-friendly tool for creating symlinks. Uses the same semantics as mv or cp (i.e. relative paths are always interpreted relative to the current directory, not the target one).

multi

Perl-based bulk file renamer. Transforms a list of file names using a user-provided Perl expression, and passes each name plus the transformed version to a command of your choice (often, but not limited to, mv or cp).

nntpid

Connects to a news server and retrieves a single article given its Message-ID, or given a group name and article number. Handy if your newsreader doesn't know how to follow references lines between newsgroups, so you can find out where a migrated thread came from.

reservoir

Copies its standard input to its standard output, but waits until it sees EOF on its input before beginning to write its output. Occasionally handy in interactive use or to overwrite a file in a quick-and-dirty manner.

xclipglue

Unifies a configurable set of X selections between two X displays, effectively gluing them into a single shared selection domain.

xcopy

Reads text out of the X selection and writes it to standard output, or alternatively reads text from standard input and places it in the X selection.

Download

Tarballs of each utility are available here.

after.tar.gz
base64.tar.gz
beep.tar.gz
buildrun.tar.gz
cvt-utf8.tar.gz
lns.tar.gz
multi.tar.gz
nntpid.tar.gz
reservoir.tar.gz
xclipglue.tar.gz
xcopy.tar.gz

If you want to see the latest state of development, you can check the development sources out from each utility's git repository, or browse the same repositories on the web:

Utility	Repository URL	Web interface
after	https://git.tartarus.org/simon/after.git	after.git
base64	https://git.tartarus.org/simon/base64.git	base64.git
beep	https://git.tartarus.org/simon/beep.git	beep.git
buildrun	https://git.tartarus.org/simon/buildrun.git	buildrun.git
cvt-utf8	https://git.tartarus.org/simon/cvt-utf8.git	cvt-utf8.git
lns	https://git.tartarus.org/simon/lns.git	lns.git
multi	https://git.tartarus.org/simon/multi.git	multi.git
nntpid	https://git.tartarus.org/simon/nntpid.git	nntpid.git
pid	https://git.tartarus.org/simon/pid.git	pid.git
reservoir	https://git.tartarus.org/simon/reservoir.git	reservoir.git
xclipglue	https://git.tartarus.org/simon/xclipglue.git	xclipglue.git
xcopy	https://git.tartarus.org/simon/xcopy.git	xcopy.git