Ask Ubuntu General Room

Nathan Osman

12:23 AM

@TheWanderer ---^

TheWanderer

lel

B66

Nathan Osman

There is still hope.

No they bought some new stuff.

Videonauth

@NathanOsman did you see my tweet?

fouric

12:41 AM

Question: is there a meta post on whether or not edited questions/answers should be explicitly marked with "update 1: bar" or "edit: foo" or something similar?

I searched several times on the meta site, but the search engine doesn't appear to be able to distinguish my intent from questions/answers that just have "edit" or "update" in them.

Nathan Osman

@Videonauth yes

Videonauth

First thing that came to my mind as i saw your tweet :D

TheXed

@NathanOsman does your phone support LTE?

Nathan Osman

On certain bands.

It's a OnePlus 3.

TheXed

my OnePlus 2 is still kicking around...

Nathan Osman

12:56 AM

@TheWanderer they're adding band 4 and 7.

According to this page: freedommobile.ca/network-and-coverage/lte-upgrades

TheXed

1:09 AM

aww man...now the FBI is watching my internet...I just clicked on a .ca domain...

Artful Aardvark

0

Q: Wifi hard blocked on lenovo miix 510 ideapad tablet

I have a lenovo ideapad miix 510 with malfunctional Wi-Fi. Rfkill list shows a hard block, but it works fine on windows. Rfkill info as well as other info were generated via ubuntu's wireless info script, attached below ########## wireless info START ########## Report from: 08 Nov 2017 20:00 U...

@NathanOsman why would it be hard-blocked but windows can use it?

TheWanderer

@NathanOsman that's good, but B7 is technically 2600, not 2500 like that news article claimed

Artful Aardvark

RIP nathan

Nathan Osman

My OP3 supports band 4 and 7 apparently. So I'm good when they deploy.

TheWanderer

1:38 AM

@NathanOsman yup

B7 is common in the UK and EU

and for some reason, a lot on NA phones support it

4 is 4 is super common

so I'm kind of surprised they got it

Nathan Osman

2:02 AM

They're deploying it in a nearby suburb mid-November and the rest of the area in December.

So - my Christmas present this year is LTE :D

TheWanderer

lol

muru

2:25 AM

Spam: askubuntu.com/a/974530/158442

TheWanderer

no u

@muru lol such subtle spam

Nathan Osman

2:52 AM

I keep forgetting I have Server 2012 on my Mac so I don't have to reboot to use Windows.

Interesting warning:

QWidget: Incompatible window flags: the window can't be on top and on bottom at the same time

Seems logical.

Ask Ubuntu Meta

3:18 AM

0

Q: Why does the site tease me about a comment I can't view?

A deleted answer marked as spam shows a "show 1 more comment" link, but clicking the link does not show the comment. Reloading the page does not make the problem go away. The deletion itself is correct, and I absolutely don't want these spam posts brought back, but this behavior from the UI is un...

bug comments deleted-questions spam-handling deleted-answers

Eliah Kagan

6:40 AM

@SergiyKolodyazhnyy Although I agree with the spirit of your edit, my code was actually correct, and I've re-edited to clarify that particular read usage explicitly. read -r by itself with no variable name, as I used there, is not POSIX, and if a shell chooses to permit it, it may define what behavior it calls for.

Unlike in ksh and zsh, the behavior bash documents and exhibits for when no variable name is passed to the read builtin is to assign the whole line to the variable, including any leading and trailing IFS whitespace. So in bash, running read -r by itself is equivalent to IFS= read -r REPLY and there is no need to use IFS=.

Using IFS= in this situation is acceptable because it cannot break anything, but I consider it a poor practice unless one is deliberately writing a polyglot intended to take advantage of nonstandard features of multiple shells that are syntactically identical but semantically different, because it creates the impression one is doing so. bash code that uses read without a variable name likely makes other bash-specific assumptions.

For example, on Ask Ubuntu we often recommend to write echo in front of a command to see what will be run, which works with theecho binary provided by GNU Coreutils as well as the echo builtin in bash and some other shells, but will cause backslash escapes to be expanded some other echo implementations, including those in some other popular shells, such as zsh's built-in echo.

Ubuntu Questions on U&L

7:27 AM

0

Q: What is the efficient way/environmental requirements to stream a 1080p file via Hotspot in Ubunut?

I'm trying to stream a Divx 1080p 25fps file from a Ubuntu 16 to another Ubuntu 16 PC via Hotspot using VLC. PC#1 use VLC as streamer and PC#2 uses VLC client. Tenda w311mi is connected to PC#1 and it is made as hotspot(Hotspot setup is done through Ubuntu Network Manager). PC#2 uses the same ten...

ubuntu vlc wifi-hotspot

Nathan Osman

7:40 AM

QHttpEngine and QMdnsEngine are now both included in msys2/mingw.

So in theory, it should be fairly trivial to build NitroShare.

Might give that a try tomorrow or the following day.

Ubuntu Questions on U&L

7:59 AM

0

Q: Ubuntu 16.04 libmfhdfalt.so.0 is missing

I tried both install Mysql Workbench using .deb package and apt. Always returns the same error when launching it. I tried uninstall and install it again back and forth and the same error occurred. First I try to run Mysql Workbench using launcher, the icon pop in the launcher and after few secon...

ubuntu mysql

Ubuntu Questions on U&L

8:12 AM

0

Q: Unable to locate package for a librery of openmpi

First, i have a "12.04 LTS" version of ubuntu. For i use "openmpi" i installed the packages: - openmpi-bin - libopenmpi-dev - openssh-server - openssh-client And when i run the command "sudo apt-get install libopenmpi-dbg" like the others, unfortunately that note "E: unable to locate package libo...

ubuntu openssh mpi

Sergiy Kolodyazhnyy

8:51 AM

@EliahKagan OK, nice to know bash works that way. Is it documented anywhere ? I didn't see anything in the manual about -r having such behavior

Eliah Kagan

9:03 AM

@SergiyKolodyazhnyy It's not the presence of -r that causes leading and trailing IFS whitespace to be retained, but the absence of a variable name passed as an argument to read. When executing read -r foo (where foo is any variable name), bash will still remove leading and trailing IFS whitespace as POSIX requires.

As for where the behavior of retaining leading and trailing IFS whitespace when no variable name is given (this is the situation thatbash reads the line into the REPLY variable) is documented, the Bash manual says: "If no names are supplied, the line read is assigned to the variable REPLY."

Although I believe that description is technically unambiguous, I remember having been confused by it at first; I would like if the documentation stated this behavior more strongly. (The manpage has similar language.) However, as far as I know this has been bash's behavior for at least as long it has been in serious use. In particular, it works this way even on my old PPC Mac running OS X 10.4.11 Tiger where $BASH_VERSION is 2.05b.0(1)-release.

I would also consider this to be the obviously better design choice than that employed in ksh and zsh--though I admit this is really just my opinion--because stripping IFS whitespace is fundamentally connected to the word splitting the shell performs when there are multiple variables. With just one variable specified, stripping whitespace but not separating any words is the degenerate case of word splitting.

With zero variables specified, it seems to me that word splitting should not happen even at a conceptual level, but that the processing that uses IFS should simply not occur, as if REPLY were storing what would otherwise have been an intermediate result.

Anyway, that part's my opinion and not official in any way. zsh in particular is, I think, an extremely well-designed shell, and I imagine its developers would be able to mount a formidable counter-argument to my opinion about the design issue, if they cared to do so.

Revetahw

@Videonauth @ParanoidPanda Turns out Night Light has a bit of a different colour than Redshift. NL reminds me much more of f.lux. I love NL, upgraded to 17.04 because of it :)

Ubuntu Questions on U&L

0

Q: E: unable to locate package libopenmpi-dbg

First, i have a "16.04 LTS" version of ubuntu. When i run the command "sudo apt-get install libopenmpi-dbg", unfortunately that note "E: unable to locate package libopenmpi-dbg" show to me and the package no installed. what should i do?

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