Someone I used to work with once inadvertently taught a very valuable lesson to a new Linux user who they were on the phone with. He told the user to run a command to remove a directory with some files in it located in their home folder. They were already in their home folder, so he asked them to run:
rm -rf folder_with_files
The customer ran the command with an asterisk thinking they were being clever and saving themselves time typing.
rm -rf part_of_folder_name *
They meant to run something a bit different.
rm -rf part_of_folder_name*
That space meant that they were actually listing two things to delete:
1. A folder that didn’t exist, because the whole folder name was not typed out.
2. Everything else.
Since they were in their home directory, this wiped out their whole home folder.
Let this be a warning to new Linux users.
Rm doesn’t have an undo.
And listen to what you’re being told when you call support.
Category Archives: advice
Making Life
Women in Grappling
I came across an article with a woman’s opinion how to attract women grapplers to your martial arts school.
http://www.grapplearts.com/how-to-get-women-into-grappling.html
Some things in there don’t matter to me. Women instructors and all women classes. Yeah. Whatever. I like a co-ed environment. I don’t even mind if the place I’m training seems like a matted cave or dungeon.
One thing stuck out for me:
“However, don’t assume that two women are a good match just because they’re women. At 110-odd pounds, I’ve been partnered with a 200-lb woman, just because we were the only chicks in the class. Probably it’d have been better to put me with the 140-lb guy and her with the 180-lb guy.”
I just wanted to run up to the author, shake her, and say, “So I’m not the only one who’s been in this position!?”
There was a period where this was frequently happening to me. I’m more like 150 than 110, but I think the woman I kept being paired up with was considerably more than 200. I felt bad, not being able to put her in my guard because of her girth versus my leg length, but I kept wondering if she felt even worse about the whole thing.
Maybe people of higher belt rank can deal with something like extreme weight differences in training partners, but this was happening when I was a brand-new no-stripes white belt and I think she had three stripes at the time.
There was no tactful way to bring it up to the instructor and no inoffensive way I could think to talk about it with my training partner. Looking back, it’s not something I should have ever been put into the position to need to address.
Keep in mind that had there just been not many people in class and literally the only person there was for me to pair up with was a mismatch, that’s a very different story and it happens. Where I currently train there is a mix of belt levels and sizes. I often train with guys bigger than me. It’s not a big deal.
The big deal is making the mismatched ‘chicks’ train together just because they’re ‘chicks’. There was more than one guy there around my weight I could have trained with and bigger guys she could have trained with. We were ONLY matched because we were both female, and put together in spite of us not being matched in size or even skill level (she was high white, me low white).
When you put together two people to roll who aren’t matched physically AND they’re both beginners, I think that can be pretty dangerous. Beginners don’t know subtleties of shifting weight slightly, training hard by using good technique and not muscle, when to tap, how to just make the person tap and not cry out in pain, or what slight differences in a move can make it likely to break someone’s wrist. Even drilling can be dangerous in this situation.
I remember a class full of particularly bad knee-on-belly instances. The reaction I got when trying to talk to my training partner about the fact I was being hurt were comments along the lines of ‘It’s not my fault’, ‘I’m not doing this on purpose’, and ‘Suck it up’.
My current coach is very careful about keeping an eye on safety. He lets us pair up, but if he doesn’t like the matches for whatever reason (safety or not), he’ll change them. If people are mismatched, he’ll make sure it’s still safe by telling the more experienced person to work on something specific or not to do certain things. If he sees someone not being safe, he’ll do whatever he thinks needs to be done to stop it. You might get told to do push ups if you know better. You’ll get a demonstration and explanation if you just didn’t realize you were practicing a technique incorrectly. He reminds those of us who are smaller and less experienced to only pair up with people we feel comfortable with, so I’ve never feel pressured to go with someone I didn’t.
I’m a proud person and it can be hard hearing him tell someone to ‘go easy’ with me sometimes. The smart part of me realizes that it has nothing to do with how tough or how much heart I have, he just wants to make sure we all can continue to train and will want to continue to train. If you get hurt or feel unsafe or frustrated, that’s not going to happen.
Let’s use an example. A guy in class has nasty headlock submissions that he can put on and crank at the blink of an eye. Pair that guy up with someone other than a guy who has amazing headlock escapes. You might have someone who’s neck is stiff for the next week (or worse) and feels very frustrated. You also have someone who isn’t learning anything, just doing the same moves that work for them at full force over and over. Fixing this isn’t just safe training, it’s smart training. The guy cranking on headlocks over and over needs to learn control. You can put a headlock on and then finish it with the minimal amount of pressure to make the person tap. He probably also should work on some other techniques so it’s not the only move he can use when it comes to competition or real life.
Jiu-jitsu is the gentle art. A perfectly executed move is done with minimal effort and exertion by the person doing it. Their technique is so dead on that they do not need to over-exert themselves. If they need to crank, pull, and muscle their way through a move, then their technique is less than perfect and they’re making up for it with size and strength. Sometimes I’m thankful that I’m not super athletic and strong. Since I can’t muscle and force my way through a move, I’m forced to learn the technique correctly or not get results.
The purpose of classes is not to win, it’s to learn. The only person you can lose is against yourself, and that happens if you’re not learning and improving.
If you’re in an environment where people are being matched with training partners that aren’t good for them, it can be very hard to learn and improve. Even of you think gender makes a difference when rolling, you have to concede that there are certainly factors that matter much more when being paired up. If it’s your only consideration when pairing up, then you might consider not taking classes (or teaching if you’re a coach) in a coed environment.
Dreams – Silent Friends
In one of my dreams last night, I was helping move chairs with someone I used to spend a lot of time with. I was going quick and carefully tossing the chairs near her. At one point she freaked out about how I was moving the chairs. I tell her to relax, it’s not like I’ve hit her yet, and I laugh. She stays stern, gives me an angry look and goes silent.
She’d been like this with me since I’d met up with her again. We hadn’t seen each other in a long time. So I asked her what the problem was. I said we used to be friendly with each other. She scoffed and told me we weren’t friends. She told me she was constantly doing stuff for me and giving, and I wasn’t.
I immediately turned defensive, confused, and sad. I asked her why she never said anything at the time. I didn’t realize that was how she felt or that things might have been that way. She told me she shouldn’t have to tell me things like that. I should have just known to give back equally.
I told her I obviously thought I did at the time. Friends are supposed to feel like they can talk to each other if things aren’t right. She told me again we weren’t friends.
If only all dreams could be so depressingly meaningful.
Next time you’re wondering whether or not to say something because you don’t want to make a big deal about it, consider that you might be making a big deal about it anyways. I think not saying something can fester and ruin relationships more than saying something. Your feelings can fester and surely will effect how you interact with that person. Before you know it, maybe you resent them so much that their obliviousness is no excuse.
The dream is right about one thing, if you can’t talk to me about how you feel, then we aren’t actually friends. I really would like to think the people I keep close will let me know what they’re thinking and feeling, even if it’s not something that’s pleasant to hear. I would like to think they’d let me know before the friendship was over.
Why is a Manhole Cover Round? Because Microsoft!
I’ve had some friends lately go through the interview process (and some who will be soon). What I always try to impress upon people (and myself when I have to do it) is that the interviewer is bumbling around about as much, if not more than you are. I think the interview at my current job was pretty good, but then I remember this gem:
“Why is a manhole cover round?”
At the time I didn’t know that this was an open-ended question. I thought it was a riddle or a logic puzzle. I’m surprisingly good at these. I say surprisingly, but maybe it isn’t all that surprising when I answered:
“Because the hole is round.”
“…”
“Well, is that right?”
“Uh. There wasn’t supposed to be a right answer. It was just an open-ended question.”
“What else would someone even say?”
At the time I thought it was a dumb question, but another way to look at it is that they found out a lot by the way I answered. I work in a job that requires logical reasoning and troubleshooting all day long every day. We quest for the best and most logical answers. I thought I did well.
Still, I don’t know what other people answer this question with, so I thought I’d Google it (about two years after I was asked). Apparently the real reason manhole covers are round is because Microsoft started asking why in their interviews.
I was not the only one who gave the practical, boring answer, but some other answers:
“A round manhole cover cannot fall through its circular opening, whereas a square manhole cover may fall in if it were inserted diagonally in the hole. (A Reuleaux triangle or other curve of constant width would also serve this purpose, but round covers are much easier to manufacture. The existence of a “lip” holding up the lid means that the underlying hole is smaller than the cover, so that other shapes might suffice.)”
Okay, you got me. I’m not an engineer.
“Round tubes are the strongest and most material-efficient shape against the compression of the earth around them, and so it is natural that the cover of a round tube assume a circular shape.”
I’m still not an engineer. This would explain why the internet is so strong, it also being constructed from a series of tubes.
“It’s easier to dig a circular hole and thus the cover is also circular.”
That’s a good point. I spent a lot of my youth in Cape Cod digging holes at the beach and I can’t say any of them were squares or triangles.
“The bearing surfaces of manhole frames and covers are machined to assure flatness and prevent them from becoming dislodged by traffic. Round castings are much easier to machine using a lathe.”
Yet again, these are things I didn’t realize. For all you machinists, score one for you.
“Human beings have a roughly circular cross-section.”
Here are the dumb answers I was looking for! Phew, all of these alternate answers were making me feel inadequate! This one I can totally feel superior to: “We’re kinda (but not really) circle, so they are too!”
“Tradition.”
…and I burst out into song, from Fiddler on the Roof. TRADITION! TRA-DI-TION! TRA-DI-TIOOOOON! To me, this answer is like saying: “Because that’s how God made it.” or just, “Because.” Even traditions have origins, people. I call FAIL on this answer.
Important to note, upon some investigation, not all manhole covers are actually round. Yes. The question itself makes an incorrect assumption. While round is most common, they also come in square and triangle. I think this easily ties into the message I was trying to send here. People who are interviewing currently, and will be soon as you graduate, don’t be too nervous as you interview. Know that the questions you will be asked and the people that ask them are flawed. They make incorrect assumptions, they steal things from Microsoft, and most have no right answer.
Just do the best to show your best, and you’ll do fine.
So, what do you answer if you get asked why is a manhole cover round?
Because Microsoft started asking people why.
Opening
I can’t say I enjoy review time at work. This is only my second review at work (since this is year two) and I’ve already developed a distaste for it. I like the concept and understand the benefits. I am not saying they shouldn’t exist, but it is a painful process for everyone involved including me.
I’m not going to say it caused anything, but it triggered a lot of thoughts that have combined with what’s been going on with me as of late.
Here I am trying so hard to look at myself and my interactions with people. I am trying to have a real understanding of what I do versus what other people do in their interactions. I’m not talking about making people like me. I’m thinking more directly, how do I get what I want from my relationships with people? How do I get the relationships I want with people?
I need to work on some things.
As much as I’m open with my personality and confidence, I don’t actually open up to people. I don’t trust people. I put myself out there because I would rather die than be dishonest about who I am, but I have become so guarded over time from being hurt by people. It’s true that I have been making some new friends and rejuvenating old friendships lately, which is no small thing. But, when they’re talking, sometimes I realize how much they give to me freely and how much I hold back. I don’t trust myself to be upset, weak, or cry around my friends. I won’t admit I’m having a bad day, complain, tell them about a problem, or ask for help anymore apparently. I’m stubborn, independent, and do not want to burden anyone. I don’t want to focus on being negative. I want to have a good time with friends. I spent some time recently with a friend talking about some financial problems I’m having. I talked at length. That was weeks ago. I still feel guilty for putting that on them, for making that part of their night more negative, and I feel like maybe I hurt our relationship. Who wants to go out of their way to spend time with someone who just spent the last hour (or whatever) complaining about money?
Flip side, I listen to my friends problems and help them all of the time. I have no idea why I make that double standard for myself.
I should let people in and people help me. It could make us closer if it doesn’t push someone away.
I have to be willing to take that chance. Keeping at a distance from everyone may seem wonderfully safe, but it’s a large burden to carry on yourself.
I need to learn to take chances in my relationships with people. The worst thing is that people may drift away, but if I don’t let them in closer, they’ll do that anyways.