Matthew Cole colematt

Re-run the last command with root privilege.

alias please='sudo $(history -p !!)'

Re-run the last command saying yes to all interactive questions.

alias really='yes | $(history -p !!)'

Motivation

You may want to build a sandbox if one or more of these sound familiar:

You want to build recognizable, representative binaries instead of toy programs for experimentation, but you also don't want the overhead of the actual SPEC CPU2017 benchmark suite, nor a script to manage the binaries' execution.
You want to modify the source code of the benchmarks without corrupting the SPEC CPU2017 source tree. Modifying the source code is allowed if you use the strict_rundir_verify=no option in your configuration file, or if you create a modified installation of the benchmark using the convert_to_development utility. But an easier option is to create sandboxes for each benchmark program you wish to investigate, and it doesn't corrupt the source tree if you're reusing it with other experiments.
You want to modify the options or inputs provided to the benchmarks to investigate how the benchmark binaries respond.

About SPEC CPU2017

Adding Sections to ELF Binaries

Suppose you need to add a section to an ELF binary to contain information gathered at compile time, but to be used at link time or run time. Here's how to add a section named .okdata and either populate it with data either after or before emitting the ELF binary.

Adding a Section After Emitting

In this case, you'll add file’s contents to an already existing binary. objcopy copies and translates object files, such that adding a new section is a matter of writing that new section’s contents into the ELF file.

(Optional) Create a simple program’s object file.

	#!/usr/bin/python3
	# Aloof.py
	# Created by Matthew Cole on 3/1/15.

	"""
	A word is ALOOF if and only if it has no words which differ from it by only one letter.
	"""

	def LDistance(str1, str2):
	"""

	#!/usr/bin/python3

	"""
	File: partition.py
	Author: Matthew Cole
	Date: 6/7/16
	"""

	def partition(collection, partitions):
	"""

	#!/usr/bin/env python3

	"""
	File: python-check.py
	Author: Matthew Cole
	Date: 28 Nov 2016
	"""
	import sys, os

	if __name__ == "__main__":

	import argparse
	import subprocess
	import sys

	"""
	Run a command and its arguments as a subprocess of the python interpreter.
	"""

	if __name__ == "__main__":

	PWD := $(shell pwd)
	CFLAGS := -g -Wall
	LDFLAGS := -L=. -Wl,-rpath=.

	all: tss-fork

	tss-fork: tss-fork.c
	$(CC) $(CFLAGS) tss-fork.c -o tss-fork -pthread

	.PHONY: clean

	CFLAGS:= -g -Wall -std=c99
	LDFLAGS:= -lc
	all: main

	main: main.c
	$(CC) $(CFLAGS) $^ -o $@

	.PHONY: clean
	clean:
	rm -fv main

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