String Contain Single Quotes

Then she understood that what she needed was the motion to a purpose, no matter how small or in what form, the sense of an activity going step by step to some chosen end across a span of time. The work of cooking a meal was like a closed circle, completed and gone, leading nowhere. But the work of building a path was a living sum, so that no day was left to die behind her, but each day contained all those that preceded it, each day acquired its immortality on every succeeding tomorrow. A circle, she thought, is the movement proper to physical nature, they say that there's nothing but circular motion in the inanimate universe around us, but the straight line is the badge of man, the straight line of a geometrical abstraction that makes roads, rails and bridges, the straight line that cuts the curving aimlessness of nature by a purposeful motion from a start to an end. The cooking of meals, she thought, is like the feeding of coal to an engine for the sake of a great run, but what would be the imbecile torture of coaling an engine that had no run to make? It is not proper for man's life to be a circle, she thought, or a string of circles dropping off like zeros behind him--man's life must be a straight line of motion from goal to farther goal, each leading to the next and to a single growing sum, like a journey down the track of a railroad, from station to station to--oh, stop it!

Our darkest fiction is full of Orwellian dystopias, shadowy cabals, and mind-controlling supervillains. But it turns out that the brainless, microscopic, single-celled organisms that live inside us have been pulling on our strings all along. On

Perhaps hell is a tiny place, a single flame, Clod thought now. The thought moved him, and he imagined the pureness of the flame as he gazed through the darkness at the candelabra. Just one flame could contain all the evil that has come and gone. What if it were that easy to snuff it out? Would he do it? No. He would never interfere. Just the image of the white light, the way it swayed in the slow breeze floating through the manor, that was what mattered to him. If he could draw that, he thought, and make the picture move somehow, that would be interesting. He could suspend the drawing from a string and let the wind push it to and fro. Strange, he thought next, that fire hurts to the touch. Fire gives light. Shouldn’t the darkness hurt instead? Hell ought to be pure darkness. Nothingness. The thought chilled him. There was nothing to see there. He shrugged and pulled his back away from the wall, feeling his shirt stick to his skin with sweat.

Or think of the tale of the blind men who encounter an elephant for the first time. One wise man, touching the ear of the elephant, declares the elephant is flat and two-dimensional like a fan. Another wise man touches the tail and assumes the elephant is like rope or a one-dimensional string. Another, touching a leg, concludes the elephant is a three-dimensional drum or a cylinder. But actually, if we step back and rise into the third dimension, we can see the elephant as a three-dimensional animal. In the same way, the five different string theories are like the ear, tail, and leg, but we still have yet to reveal the full elephant, M-theory. Holographic Universe As we mentioned, with time new layers have been uncovered in string theory. Soon after M-theory was proposed in 1995, another astonishing discovery was made by Juan Maldacena in 1997. He jolted the entire physics community by showing something that was once considered impossible: that a supersymmetric Yang-Mills theory, which describes the behavior of subatomic particles in four dimensions, was dual, or mathematically equivalent, to a certain string theory in ten dimensions. This sent the physics world into a tizzy. By 2015, there were ten thousand papers that referred to this paper, making it by far the most influential paper in high-energy physics. (Symmetry and duality are related but different. Symmetry arises when we rearrange the components of a single equation and it remains the same. Duality arises when we show that two entirely different theories are actually mathematically equivalent. Remarkably, string theory has both of these highly nontrivial features.) As we saw, Maxwell’s equations have a duality between electric and magnetic fields—that is, the equations remain the same if we reverse the two fields, turning electric fields into magnetic fields. (We can see this mathematically, because the EM equations often contain terms like E2 + B2, which remain the same when we rotate the two fields into each other, like in the Pythagorean theorem). Similarly, there are five distinct string theories in ten dimensions, which can be proven to be dual to each other, so they are really a single eleven-dimensional M-theory in disguise. So remarkably, duality shows that two different theories are actually two aspects of the same theory. Maldacena, however, showed that there was yet another duality between strings in ten dimensions and Yang-Mills theory in four dimensions. This was a totally unexpected development but one that has profound implications. It meant that there were deep, unexpected connections between the gravitational force and the nuclear force defined in totally different dimensions. Usually, dualities can be found between strings in the same dimension. By rearranging the terms describing those strings, for example, we can often change one string theory into another. This creates a web of dualities between different string theories, all defined in the same dimension. But a duality between two objects defined in different dimensions was unheard of.

1.1M    ./scripts 58M     ./cloud9 74M     . You can also use tee to write the output to several files at the same time, as shown in this example: root@beaglebone:/opt# du ‐d1 ‐h | tee /tmp/1.txt /tmp/2.txt /tmp/3.txt Filter Commands (from sort to xargs) There are filtering commands, each of which provides a useful function: sort: This command has several options, including (‐r) sorts in reverse; (‐f) ignores case; (‐d) uses dictionary sorting, ignoring punctuation; (‐n) numeric sort; (‐b) ignores blank space; (‐i) ignores control characters; (‐u) displays duplicate lines only once; and (‐m) merges multiple inputs into a single output. wc (word count): This can be used to calculate the number of words, lines, or characters in a stream. For example: root@beaglebone:/tmp# wc < animals.txt  4  4 18 This has returned that there are 4 lines, 4 words, and 18 characters. You can select the values independently by using (‐l) for line count; (‐w) for word count; (‐m) for character count; and (‐c) for the byte count (which would also be 18 in this case). head: Displays the first lines of the input. This is useful if you have a very long file or stream of information and you want to examine only the first few lines. By default it will display the first 10 lines. You can specify the number of lines using the ‐n option. For example, to get the first five lines of output of the dmesg command (display message or driver message), which displays the message buffer of the kernel, you can use the following: root@beaglebone:/tmp# dmesg | head ‐n5   [    0.000000] Booting Linux on physical CPU 0x0   [    0.000000] Initializing cgroup subsys cpuset   [    0.000000] Initializing cgroup subsys cpu   [    0.000000] Initializing cgroup subsys cpuacct   [    0.000000] Linux version 3.13.4-bone5(root@imx6q-sabrelite-1gb-0) tail: This is just like head except that it displays the last lines of a file or stream. Using it in combination with dmesg provides useful output, as shown here: root@beaglebone:/tmp# dmesg | tail ‐n2   [   36.123251] libphy: 4a101000.mdio:00 - Link is Up - 100/Full   [   36.123421] IPv6:ADDRCONF(NETDEV_CHANGE): eth0:link becomes ready grep: A very powerful filter command that can parse lines using text and regular expressions. You can use this command to filter output with options, including (‐i) ignore case; (‐m 5) stop after five matches; (‐q) silent, will exit with return status 0 if any matches are found; (‐e) specify a pattern; (‐c) print a count of matches; (‐o) print only the matching text; and (‐l) list the filename of the file containing the match. For example, the following examines the dmesg output for the first three occurrences of the string “usb,” using ‐i to ignore case: root@beaglebone:/tmp# dmesg |grep ‐i ‐m3 usb   [    1.948582] usbcore: registered new interface driver usbfs   [    1.948637] usbcore: registered new interface driver hub   [    1.948795] usbcore: registered new device driver usb You can combine pipes together. For example, you get the exact same output by using head and displaying only the first three lines of the grep output: root@beaglebone:/tmp# dmesg |grep ‐i usb |head ‐n3   [    1.948582] usbcore: registered new interface driver usbfs   [    1.948637] usbcore: registered new interface driver hub   [    1.948795] usbcore: registered new device driver usb xargs: This is a very powerful filter command that enables you to construct an argument list that you use to call another command or tool. In the following example, a text file args.txt that contains three strings is used to create three new files. The output of cat is piped to xargs, where it passes the three strings as arguments to the touch command, creating three new files a.txt, b.txt,

A local scientist, who had taken it upon himself to rally some help from other retired experts and deactivate some of the weaponry, showed me into a corrugated-iron shed, locked by a single piece of string, inside which were 30,000 rusting shells still containing the military high-explosive TNT.

A single projectile weighed less than a gram but contained a few micrograms of anti-matter surrounded by a shell that could change super-string vibration and penetrate energy or armor shields with relative ease.

Steve drove the next morning as we made the turn for the Burdekin River. The single-lane dirt road, as small as it was, ended there--but we had another two or three hours of four-wheel driving to go. We navigated through deep ravines carved by the area’s repeated cyclone-fed floods, occasionally balancing on three wheels. “Hang out the window, will you?” Steve shouted as we maneuvered around the edge of a forty-foot drop. “I need to you to help counterbalance the truck.” You’ve got to be kidding me, I thought. But there I was, hanging off the side of the bull bar while Steve threaded his way over the eroding track. As we pounded and slammed our way deep into the bush, Steve talked about the area’s Aborigines. He pointed out a butte where European colonists massacred a host of the Aboriginal population in Victorian times. The landscape was alive to him, not only with human history, but with the complex interrelatedness of plants, animals, and the environment. He pointed out giant 150-year-old eucalypts, habitats for insectivorous bats, parrots, and brush-tailed possums. After hours of bone-jarring terrain, we reached the Burdekin, a beautiful river making its way through the tea trees. It was a breathtaking place. We set up camp--by which I mean Steve did--at a fork in the river, where huge black boulders stood exposed in the middle of the water. I tried to help, but I felt completely out of my depth. He unpacked the boat and the motor, got it tied and moored on the river, rolled out the swags, and lined up containers of fuel, water, and food. Then he started stringing tarps. What a gift Steve had for setting up camp. He had done it countless times before, month in and month out, all by himself, with only Sui for company. I watched him secure ropes, tie knots, and stretch canvas like he was expecting that we’d have to withstand a cyclone. It was hot, more than a hundred degrees Fahrenheit, but Steve didn’t seem to notice. Sui found a little shallow place at the edge of the river and immediately plopped herself in. I saw Steve look over at her as if calculating her chances of being snatched by a croc. Crocodiles are the ultimate camouflage attack predators, striking from the water’s edge. There would never be “down time” for Steve. No time to sit down and unwind. We were off in an instant. We grabbed Sui, jumped in the boat, and headed upstream. White Burdekin ducks startled up in front of our boat, their dark neck-rings revealed as they flew over us. Cormorants dried their feathers on the mid-river boulders, wings fully open. It was magical and unspoiled, as if we were the first people ever to travel there.