Vitaly Rybnikov Frodox

The Unix time command

man time is a good start - on Linux you get the GNU time version.

Note: some shells (e.g.,bash(1)) have a built-in time command that provides less functionality than the command described here. To access the real command, you may need to specify its pathname (something like /usr/bin/time).

GNU time

A call of /usr/bin/time gives a lot of information:

/usr/bin/time ls > /dev/null

	# Geany's snippets configuration file
	#
	# use \n or %newline% for a new line (it will be replaced by the used EOL char(s) - LF, CR/LF, CR).
	# use \t or %ws% for an indentation step, it will be replaced according to the current document's indent mode.
	# use \s to force whitespace at beginning or end of a value ('key= value' won't work, use 'key=\svalue').
	# use %key% for all keys defined in the [Special] section.
	# use %cursor% to define where the cursor should be placed after completion. You can define multiple
	# %cursor% wildcards and use the "Move cursor in snippet" to jump to the next defined cursor
	# position in the completed snippet.
	# You can define a section for each supported filetype to overwrite default settings, the section

	#!/usr/bin/env python

	#http://faq.pygtk.org/index.py?req=show&file=faq23.039.htp


	try :
	import gtk.gdk
	except ImportError :
	print 'You need to install pygtk'
	exit(1)

	#!/bin/sh

	#
	# For each ref, validate the commit.
	#
	# - It disallows deleting branches without a /.
	# - It disallows non fast-forward on branches without a /.
	# - It disallows deleting tags without a /.
	# - It disallows unannotated tags to be pushed.

	#!/bin/bash

	VBoxManage list runningvms

	VBoxManage guestproperty get "VM_NAME" "/VirtualBox/GuestInfo/Net/0/V4/IP"

	# NOTE: work only if guest vm have VboxAdditions installed

	for f in "$@"
	do
	TMP=$(mktemp)
	SIZE_OLD=$(wc -c < "$f")
	echo "Optimizing '$f' of size $SIZE_OLD"
	/usr/bin/gs \
	-sDEVICE=pdfwrite \
	-dCompatibilityLevel=1.4 \
	-dPDFSETTINGS=/ebook \
	-dNOPAUSE \

	#!/bin/bash

	# allow to convert multipage pdfs
	convert -verbose -density 200 -trim schedule_rus_fin.pdf -quality 90 zeronight%d.jpg

	#!/bin/bash
	# little endian - forward byte order
	# big endian - reverse byte order

	echo "You have 32 bit system (1), 64bit (0)"

	echo -n I \| od -to2 \| head -n1 \| cut -f2 -d" " \| cut -c6


	# cc: http://serverfault.com/questions/163487/linux-how-to-tell-if-system-is-big-endian-or-little-endian

	#!/bin/sh

	wget --header "Cookie: oraclelicense=accept-securebackup-cookie" http://download.oracle.com/otn-pub/java/jdk/8u5-b13/jdk-8u5-linux-x64.tar.gz