Monthly Archives: March 2016

Linux command-line tools I usually install

Some additional command-line tools that I use to install and use on my client Systems

Apache benchmarks

To stress a Web Server

ethtool

ethtool

git

htop

An improved top

ifmetrics

To set the metrics of all IPV4 routes attached to a given network interface

iftop

To watch metrics for a network interface (or wireless)

iftop-wlan0

 

 

 

 

 

iostats

CPU and IO devices stats. I modified some collectors for telegraf and influxdb consumed by grafana for fetching the Write KB/s, Read KB/s, Bandwidth of the Magnetic Spinning drives and SSD during declustered rebuild.

iperf

Perform network throughput tests

ipmitool

java (jre Oracle and OpenJDK)

ldap-utils

mc

Midnight Commander

mc

mytop

To see in real time queries and slow queries to mysql

ncdu

Show the space used by any directory and subdirectory

ncdu

ncdu-2

nginx (fpm-php) and apache

The webservers

nfs client

open-vpn

openssh-server

parted

Partition manipulation

PHP + curl + mysql (hhvm)

python-pip and pypy

smartctl

Utility for dealing with the S.M.A.R.T. features of the disks, knowing errors…

sshuttle

A poor’s man VPN through SSH that is available for Linux and Mac OS X.

E.g.: sudo sshuttle -r carles@8.8.1.234:8275 172.30.0.0/16

Sshuttle forwards TCP and DNS but does not forward UDP or ICMP. So ping or ipmi protocol won’t work. But it does work for http, https, ssh…

Nice article on tunneling only certain things here.

strace

To trace the system calls and signals

subversion svn

traceroute, tcpdump

zram-config

Sergey Davidoff stumbled upon a project called compcache that creates a RAM based block device which acts as a swap disk, but is compressed and stored in memory instead of swap disk (which is slow), allowing very fast I/O and increasing the amount of memory available before the system starts swapping to disk. compcache was later re-written under the name zRam and is now integrated into the Linux kernel.

http://www.webupd8.org/2011/10/increased-performance-in-linux-with.html