.TH TMPERAMENTAL "1" "March 2020" "tmperamental 1.2" "User Commands"
.SH NAME
tmperamental \- avoid writing to /tmp
.SH SYNOPSIS

.B tmperamental cmd arg1 arg2 ...

.SH DESCRIPTION

.B tmperamental
uses a preloaded library that intercepts filesystem writes, and causes
loud failures when writes are attempted on
.B /tmp/*

The idea here is by setting TMPDIR and friends, it catches programs in
the act of not respecting such env-vars.

.SH USAGE

Prefix the command you want to run with
.B tmperamental
and it should cause it to abort if it ever tries to write anywhere within
.BR /tmp .
This is pretty brutal, so you probably only want to use it for testing.

.SH ENVIRONMENT

If
.B TMPDIR
is unset,
.B tmperamental
will set it automatically to
.BR $HOME/tmp .

.B tmperamental
uses
.B LD_PRELOAD
to load a custom library
.B libtmperamental.so
that intercepts library calls.

.SH LIMITATIONS

.B tmperamental
only catches writes to
.B /tmp
at shared object library calls using the standard libc interface.  A
statically-compiled program that makes system calls directly will be able to write to
.B /tmp
without being intercepted.