@FaheemMitha Where do you think Linus would hang out if he were on SO? Granted, his hate for C++ might extend to not entering a C++ room, but lets say it didn't. He'd fit right in! That was the irony, you comparing them to him.
@FaheemMitha - I dunno if that is sarcasm, but - admittedly abnormally - I'm not joking. You'll find all kinds of Stephane's going back at least a decade. In the following answer to his question, I quote his own newsgroup email from 11 years ago:
The Microsoft Interix Unix subsystem (now retired) for its NT kernel dealt a little differently with user and group permissions than some others do:
User and group information is stored in the Security Access database. Both users and groups are stored in the same database, but group and user ...
@mikeserv That change on getopts is fine. I never made the move beyond bash (after sh, csh, ksh, tcsh, all of them a long time ago) to ksh or other alternatives. So I am not surefooted about other shells capabilities. (And since I do anything more than simple in Python, that situation is unlikely to change reps. improve)
@Anthon - thanks. It was a really good answer, and better even than it seemed you knew. getopts, by the way, is really fun to do crazy things with when it comes to array handling.
@mikeserv No, not sarcasm. Not sure why you would think it is. Some people are really good at picking up stuff quickly. That is all. I guess maybe Stefane has been doing it a long time, so I stand corrected. I has the impression that he was youngish (30s) but maybe he got started when he was 12 or something.
I've been reading stuff on the net for rather longer than a decade, and don't recall having run across Stefane's name before, but then I don't do much heavily Unix stuff, like shell scripting.
@mikeserv I think I ran across a web page of his. One sec, let me check.
That gives you an opportunity to set/choose $0 when using an inline script. Otherwise, $0 would just be bash.
Then you can do for instance:
$ bash -c 'wc -c < "${1?}"' getlength foo
4
$ bash -c 'wc -c < "${1?}"' getlength bar
getlength: bar: No such file or directory
$ bash -c 'wc -c < "${1?}"'...
You'll also find many (suggested by) or (thanks to) Stephane Chezalez entries in stuff like the bash wiki and the sed tutorials sprinkled across the net. His emails show up occasionally throughout. I once saw an email - maybe 2010? - from someone else - some excited person - saying "I heard Stephane is posting again..."
Maybe it was earlier
I dunno. I tried finding it again once and never could.
Stefane's resume finally downloaded here. I see he describes himself as expert in Unix shella, and Linux expert. Unlike many other resumes I've seen over the years, he actually means the expert bit.
I use the word expert to describe myself sometimes. Purely for marketing purposes.
I think it is a much misused word on resumes. There is a form of inflation in resumes usually. People say they know a language if they picked up a book about it once.
@slm thanks for the edit, I was not sure to add that or not as I am not sure it will bring the network down in the process (and do not have today to try it out on a virtual machine).
@FaheemMitha @mikeserv BTW, if the user isn't in the chatroom when you @ their name they don't get the msg AFAIK. They have to be in the room to get the pings.
My thinking is that closes are always in a position to be reopened if they're improved enough, so any improvements to them are a step in that direction.
@Ramesh on hold and closed are the same thing, the name just changes from one to the other after a few days. IIRC the addition of the "on hold" status before closed was to reinforce the idea that a post isn't dead once closed, just in need of editing
if a post isn't salvageable through edits, that is what the low quality flag is for, thus if it is closed and not deleted it is theoretically salvageable and if you can do it, go for it.
@slm I tend to just tab complete the name. If it doesn't tab complete, I tend not to send it. I assume it will only tab complete if the user is actually in the room, but i've not tested that.
Nah, just a place where mods can talk to each other. It's very useful to vet migrations for example or for asking how to deal with specific issues. We don't use it to whine about annoying users. Ever.
Does SE have any mechanism for users to chat privately to each other?
The question I asked about CUPS the other day was ignored. So, let's try again.
I'm trying to set the default printer, but the cups frontends are ignoring it. I've no idea what's wrong. I set it via the frontend, but verified it has changed /etc/cups/printers.conf. I don't know whether this is suitable for the site. This may just be a bug, but a rather strange one, if it is.
I have this script:
echo $HOME
cd $HOME
cd /
cd /usr/local/src/
When I run it like this
. script.sh
I get this output:
/home/user
: No such file or directory
: No such file or directory
: No such file or directory
If I run it normally (I added #!/bin/bash before the first line)
sh scrip...
. test.sh
+ . test.sh
++ echo $'/home/braiam\r'
/home/braiam
++ cd $'/home/braiam\r'
: No such file or directory
++ cd $'/\r'
: No such file or directory
++ cd $'/usr/local/src/\r'
: No such file or directory
@terdon Thanks. Because I won't. I was just telling someone yesterday that I thought whitespace as syntax was (on balance) a misfeature. Though it does make the code look better.
@Gnouc Try import this inside a python interpreter.
the only time I really dislike pythons whitespace is when I have deeply nested structures that don't neatly nest together (e.g. multiple flows within each nest). Makes it very fun when you open up a file that mixed hard tabs and soft tabs and you aren't sure which indentation stop something belongs at
I'm also not particularly fond of their nutty approach to error handling. If something doesn't behave as you expect, throw an exception - then try to catch it. Screwy. Sensible people check for error conditions.
@AvinashRaj Depends what library you are using. What does that do, replace commas with blank spaces everywhere in a file?
@AvinashRaj true, but how many lines of sed will it take to open an hdf5 file, read a 3d grid and plot it? Sure, sed isn't built to do that, but every tool has its purposes and weaknesses
(the above takes ~6 or 8 lines of python to open/read/plot with publication quality, iirc)
@AvinashRaj the general purpose matcher would take more lines, but i'm positive you could do that with 2 lines max, maybe 1 in python
casey@convect so % cat test.csv
test,0,0,1.0,test2,35,xyz,123
casey@convect so % ./csvto%20.py test.csv
test 0 0 1.0 test2 35 xyz 123
casey@convect so % cat csvto%20.py
#!/usr/bin/env python
import sys
with open(sys.argv[1]) as f:
for line in f:
print(line.replace(","," "))
@AvinashRaj ^^^ there is one way to do it
its somewhat dirty as it doesn't do any validation on the input file and doesn't even check if one was supplied on the command line.
not quite the one-liner on the command line you could get out of sed or perl to do the same thing, but not much harder either (i'd have to look up the perl options to wrap my one-liner around a while(<>) or whatever it needs to do for looping over input)
btw @AvinashRaj using the with construct to open the fiie closes the file handle upon exiting the block, so its a bit more useful that it perhaps looks.
(not quite a try block as I had thought)
e.g.
#!/usr/bin/env python
import re
import sys
try:
with open(sys.argv[1]) as f:
for line in f:
print(re.sub(r","," ", line.rstrip()))
except:
print("usage: {0} <file>".format(sys.argv[0]))
% ./csvto%20.py
usage: ./csvto%20.py <file>
and fwiw, the code I've been pasting is python 3.x, you might need to import from __future__ to get it working on 2.7
and in full disclose, don't write a bare except like I did above, that will catch a bad filename or IO errors during the read, or anything else that could be raised by the re matcher
Hi everyone, quick question. Im doing some research on router vulnerabilities. I'd like to know if I can get a list of devices running on the ARM architecture as opposed to the more popular MIPS
I only use the first form when I'm opening it for short-term use as it ensured the file gets closed at the end of the block and I don't spend a line closing it manually
well, getting syslog-ng to send its logs remotely and an rsyslogd box to read them was surprisingly very easy
I figured I was in for at least a little bit of headache with two different logging daemons involved
The Microsoft Interix Unix subsystem (now retired) for its NT kernel dealt a little differently with user and group permissions than some others do:
User and group information is stored in the Security Access database. Both users and groups are stored in the same database, but group and user ...
That gives you an opportunity to set/choose $0 when using an inline script. Otherwise, $0 would just be bash.
Then you can do for instance:
$ bash -c 'wc -c < "${1?}"' getlength foo
4
$ bash -c 'wc -c < "${1?}"' getlength bar
getlength: bar: No such file or directory
$ bash -c 'wc -c < "${1?}"'...
I have this script:
echo $HOME
cd $HOME
cd /
cd /usr/local/src/
When I run it like this
. script.sh
I get this output:
/home/user
: No such file or directory
: No such file or directory
: No such file or directory
If I run it normally (I added #!/bin/bash before the first line)
sh scrip...
