options.delete(:expires_in) { ActiveStorage.urls_expire_in }

When a language presumes to know more than its user, that's when there's trouble.

Just because a language has a feature that might be dangerous doesn't mean it's inherently a bad thing. When a language presumes to know more than its user, that's when there's trouble.

I'd argue that when you find a programming language devoid of danger, you've found one that's not very useful.

The reason eval is there is because when you need it, when you really need it, there are no substitutes. There's only so much you can do with creative method dispatching, after all, and at some point you need to execute arbitrary code.

When is eval justified? In pragmatic terms, when you say it is. If it's your program and you're the programmer, you set the parameters.

transitive verb

The main usage difference is that dependency can be used in a second sense as a "concrete" noun to mean a person or thing which depends on something/someone else. But note that in the programming context it's not uncommon to see it used to mean a software resource upon which some piece of software depends (i.e. - reversing the need/provide relationship).

as a native speaker I'd probably tend to refer to his drug dependency, but his dependence on drugs (maybe because I see one as a problem he has, and the other as something he's doing, I don't know).

And as others have pointed out, there is potential for ambiguity: if A is dependent on B, then a dependence or dependency (relationship) exists; but referring to either A or B as the dependency demands context.

I think that "dependency" is usually the thing that you depend on, whereas dependence is the state of depending on it. But there are certainly cases where you could use either interchangeably.

If you want the easy way out (which looks like the way majority usage is going anyway), you can probably get away with using dependency all the time.

Dependence and dependency can both be used in the state/condition of being dependent sense.

There are certainly cases where you can use dependency and cannot use dependence: for example "The UK's overseas dependencies", or "This software releases has dependencies on Unix and Java". So if the dependent things are discrete and countable, it should definitely be "dependency".

I think "dependence" and "dependency" are like "competence" and "competency". Both are nouns. Yet, "dependence" emphasizes the quality of being dependent. So, it may also be abstract. Whereas, "dependency" focuses on the state of being dependent. It is likely to be concrete.

I don't understand the distinction between quality and state.

Just remember that “dependence” is the quality and “dependency” is the state of having to rely on someone or something else.

git branch --delete --remotes origin/X git branch -dr origin/X # Shorter

they're not wrong, but they don't teach what you don't know you don't know, whereas the one I link to makes this critical unknown unknown become a known unknown and then a known known. I didn't know you had a 1) local branch, 2) locally-stored remote-tracking branch, and 3) remote branch until I read that answer. Prior to that I thought there was only a local branch and remote branch. The locally-stored remote-tracking branch was an unknown unknown. Making it go from that to a known known is what makes that answer the best.

I just want to tell you how wonderfully helpful, thorough, and precise your reviews are. I really appreciate them, and finding this review has led me to read others of yours. I don't think I've ever read a better review. Thank you!

where("period @> date ? ", shares_at)

t.daterange :period

The indentation of the remaining lines can be corrected with other cops such as IndentationConsistency and EndAlignment.

One thing for the impatient: after the program displays number of messages in both accounts, it seems that it has hung up. But it does something in the background and one has to wait a longer while before it starts displaying info about copied messages.

Good feedback is always welcome! and bad feedback is very often welcome It may sounds crazy but I do reply personally to every single email message I receive, so don't hesitate to spend time writing to me about your email problems, you're sure to get my attention and my time.

--stop-after-configfile-check

Kamatera is a very good option to run a mail server because They don’t block port 25, so you can send unlimited emails (transactional email and newsletters) without spending money on SMTP relay service. Kamatera doesn’t have any SMTP limits. You can send a million emails per day. The IP address isn’t on any email blacklist. (At least this is true in my case. I chose the Dallas data center.) You definitely don’t want to be listed on the dreaded Microsoft Outlook IP blacklist or the spamrats blacklist. Some blacklists block an entire IP range and you have no way to delist your IP address from this kind of blacklist. You can edit PTR record to improve email deliverability. They allow you to send newsletters to your email subscribers with no hourly limits or daily limits, whatsoever. You can order multiple IP addresses for a single server. This is very useful for folks who need to send a large volume of emails. You can spread email traffic on multiple IP addresses to achieve better email deliverability.

Mass electronic surveillance by governments revealed over the last several years has spurred a new movement to re-decentralize the web, a movement to empower individuals to be their own service providers again.

If you are watching this show with non-Chinese subtitles you are massively missing out. The Chinese dialogue is written with the skill of a bard. The language is sophisticated, succinct, elegant and poetic - as beautiful as the visuals. In comparison, the English subtitles were dull and prosaic, an abominable shadow of the original dialogue, using the vocabulary of a primary school student. It's as if the varying shades of blue - cerulean, sapphire, teal, indigo were translated into "blue, blue, blue, blue". I was truly disappointed by the English subtitles

This allows reading your email offline without the need for your mail reader (MUA) to support IMAP operations. Need an attachment from a message without internet connection? No problem, the message is still there.

IMAP's main downside is that you have to trust your email provider to not lose your email.

Modoboa is an alternative to those 3 options. It frees you from dependence on email providers and makes accessible to all the creation his own secure email server.

use the services of free email providers (Gmail, Live, Yahoo...) which are limited and your data is used for commercial purposes. Install your own email server, which requires important technical knowledge to setup and configure the system.

cron mode (--cron) which only produces stderr output to prevent cron from sending mails on sucessful run

wrapper script for mysqldump

Besides that ffscreencast can act as an ffmpeg command generator. Every available option can also just show the corresponding ffmpeg command instead of executing it. Non-ffmpeg commands, such as how the camera resolution is pulled and others can also be shown instead of being executed.

allows fool-proof screen recording via the command line

a shell wrapper for ffmpeg

If IFS is unset, or its value is exactly <space><tab><newline>, the default, then any sequence of IFS characters serves to delimit words. If IFS has a value other than the default, then sequences of the whitespace characters space and tab are ignored at the beginning and end of the word, as long as the whitespace character is in the value of IFS (an IFS whitespace character). Any character in IFS that is not IFS whitespace, along with any adjacent IFS whitespace characters, delimits a field. A sequence of IFS whitespace characters is also treated as a delimiter. If the value of IFS is null, no word splitting occurs.

Inspect the proposed changes in the pull request and ensure that you are comfortable running your workflows on the pull request branch. You should be especially alert to any proposed changes in the .github/workflows/ directory that affect workflow files.

commented

I add it as a cron from webmin - a Web GUI for administering any linux box

linux-timemachine

sudo apt-get install backup-manager

it should provide one task only and do it well

without the need of external requirements and only rely on default installed tools

tree -L 2 /dst

Exclude and include rules are resolved relative to the root of the transfer, but finding rule files (e.g. --exclude-from='exclude-list') is done relative to the working directory of the rsync process (which it inherits from the process that ran it).

ldd --version

For example, still not over the death of Google Reader after all these years? Why not host your own RSS aggregator like Sismics Reader that nobody can ever take away from you?

Self-hosting is when you---either using a computer on your local network at home or a remote "bare metal" server host you've purchased---host your own services for various purposes.

In the author’s view, using a combination of content-addressing, signed content, and petnames would help decentralise that layer. It keeps centralisation around aggregators (because of the scarcity of attention), but mitigates their harmful lock-in.

“Perhaps there is a rule of thumb here? If you decentralize, the system will recentralize, but one layer up. Something new will be enabled by decentralization. That sounds like evolution through layering, like upward-spiraling complexity. That sounds like progress to me.”

“But our everyday reality using the computer does not feel empowering. You want to use the internet without being tracked? Almost impossible. Want to message a friend? I hope you have read and agree to the WhatsApp Terms of Service and Privacy Policy. Want to install some software on your Apple device? It better be in the App Store. Perhaps you want to lend an Amazon eBook to your sister? Well you don’t actually own it, so you’ll have to ask Amazon.”

Business logic in theory occupies the middle tier of a 3-tier architecture.

It funds those with ideas to fix the internet.

In many ways, mail server stacks represent a collision between the tools and values of the early internet — self-hosting open source software using well-defined standards and interoperable protocols — and the reality of the modern internet — a few centralized, trusted authorities.

Annoyingly, git fetch --depth=<N> won't pick up new tags

git fetch --depth 1 origin <sha1>

Well-thought-out, idiomatic APIs

It is open sourced and you can find it at https://github.com/digitalocean/droplet-agent

The above diagram depicts the details of a session creation.

Since the Console UI is a web-based app running on the customer’s browser, there are a few challenges we had to overcome due to the limitation set by the browser environment. Typically, the SSH protocol runs over a TCP connection. However, a raw TCP connection isn’t allowed by most browsers.  Moreover, even if we had a way to support a direct TCP connection from within the browser, the Console UI still would not be able to connect to the target Droplet due to CORS limitation unless we assigned every Droplet a sub domain that complies with the CORS requirements, which is impractical.

When building the Droplet Console, we had a few options to support SSH keys-based authentication. The most straightforward way would be to directly allow the customer to specify a private key that is already set up for accessing the Droplet. However, there are some problems with this solution:

UNIX philosophy: Do one thing and do it well!

NOTE: this repository is mostly unmaintained; I will review and merge PRs, but I(@zenhack) am no longer using this tool myself and am thus not motivated to otherwise actively develop it.

the Senate passed the bill by unanimous consent, although several senators stated later that they would have objected if they had known that the bill could pass

commands="\nthing1@this is thing 1\!\nthing2@this is thing 2!" while read line;do // do your stuff here line <<< $( echo -e "${commands}" )

-e switch tells the echo command to honour all back slashes . The same behaviour can be achieved with `shopt -s xpg_echo` ( you have to remove -e switch whenever you do that )

Starting in bash 4.4, you can use ${input@E} in place of $(echo -e "$input").

the OP's problem can not be solved simply by changing $IFS, because $IFS doesn't apply to quoted strings.

Bash doesn't do word expansion on quoted strings in this context. For example: $ for i in "a b c d"; do echo $i; done a b c d $ for i in a b c d; do echo $i; done a b c d

I am a developer, mainly on embedded systems, with a computer science background and security and cryptography leanings by trade. I also have interests in various other topics.

Using quotes for i in "$(cat $1)"; results in i being assigned the whole file at once. What should I change?

files with characters after the last newline are not text files, and those characters don't constitute a line. In many cases those bogus characters are better left ignored or removed, though there are cases where you may want to treat it as a extra line, so it's good you show how.

(9 years later:)Both provided answers would fail on files without a newline at the end, this will effectively skip the last line, produce no errors, would lead to disaster (learned hard way:).

Answers are identical because Questions are identical too !

Also, always prefix globs with "/" or "./"; otherwise, if there's a file with "-" as the first character, the expansions might be misinterpreted as options.

if at all possible, you should send MIME attachments instead, unless you specifically strive to be able to communicate with the late 1980s.

Back in the day, the de facto standard for sending binaries across electronic mail was uuencode. It still exists, but has numerous usability problems; if at all possible, you should send MIME attachments instead, unless you specifically strive to be able to communicate with the late 1980s.

There is actually no meaningful distinction between a hostname which happens to be a second-level domain and a hostname which has more parts than that. You can even have a machine at a top-level domain if you happen to be a small country or otherwise are able to create an A record for one.

The host itself does not handle the actual FQDN. That is handled by the DNS. FQDN (Fully Qualified Domain Name) is handled by DNS translating names into IP addresses. Using the /etc/hosts file, you are essentially overriding the DNS server.

Google, one of the main email service providers (ESPs)

To ensure your messages pass the DMARC check with flying colors, you'll need to make certain the domains listed in the From, Sender, and Mail-From headers match each other exactly. That is, the domain listed in the From header is the exact actual sending domain.

For example, if your sending domain is ABCdomain.com, but your From field shows 123domain.com instead, you will almost certainly run into DMARC issues. Sometimes, even the difference between mail.ABCdomain.com and ABCdomain.com is sufficient for a server to place your message in a spam folder. We make sure that our Email Best Practices are clear that the domain listed in the From header and the actual sending domain should match for exactly this reason.

Note that the mere presence of this header causes premailer to be skipped, i.e., even setting skip_premailer: false will cause premailer to be skipped. The reason for that is that the skip_premailer is a simple header and the value is transformed into a string, causing 'false' to become truthy.

sums = [0] (1..gains.length).each do |i| sums[i] = sums[i - 1] + gains[i - 1] end could, if scan was introduced, be replaced with: sums = gains.scan_left(0, &:+)

I'd even go as far as saying each_with_object is often less readable than using a captured variable.

I think "purely functional, not a single re-assigned variable" often introduces significant extra complexity, when Ruby is a language that embraces both functional and imperative programming.

One of my favorite aspects of Ruby is how easy it is to write in a functional programming style, and including the scan operation would expand the number of use cases covered by functional methods.

each_with_object is only useful if mutating some object (typically an Array or Hash).

I think this is the crux of the issue. Because #inject needs to evaluate every element in order to return a meaningful value, it can't be partially evaluated. The "scan" operation allows for partial evaluation.

I think there are real-world use cases! Would you consider converting a history of transactions into a history of account balances a valid use-case? That can be done easily with a scan. For example, if you have transactions = [100, -200, 200] then you can find the history of account balances with transactions.scan_left(0, &:+) # => [0, 100, -100, 100].

no mention of each_with_object having a lazy implementation which is most likely why your second example loops forever.

You just blew my mind Marc-André. My code just went from idiotic to idiomatic.