Jq regex

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Jq regex

By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. It only takes a minute to sign up. I want to use jq toolsand check the values of key11key12key13 like this:.

To apply a regex to key names, you'll first have to convert those key names into text. This can then feed into a filter that extracts the key, tests it against a regexp, then either outputs the whole entry or omits it:.

Sign up to join this community. The best answers are voted up and rise to the top. Match keys with regex in jq [closed] Ask Question. Asked 2 years, 5 months ago. Active 2 years, 5 months ago.

Viewed 12k times. JigglyNaga 6, 1 1 gold badge 14 14 silver badges 43 43 bronze badges. What does mean your if value this keys is null? But I can't understand your examples, or the exact result you want, especially the bit about the "second parameter".

Please could you include some example inputs and indicate which ones should reach exit 0? Please don't overwork your cats - just open the file directly to stdin i. Thank you; end of public service announcement. I want to check do this format key11 and key12 and key13 exists in the json,also is the value of these keys zero? Active Oldest Votes. JigglyNaga JigglyNaga 6, 1 1 gold badge 14 14 silver badges 43 43 bronze badges.

Either way, grep should be able to match it. Please edit your question to show the exact input you're trying to match, and what you've tried so far. My question has changed :. The Overflow Blog. Podcast Ben answers his first question on Stack Overflow.When you search for data in a text, you can use this search pattern to describe what you are searching for. Regular expressions can be used to perform all types of text search and text replace operations.

In JavaScript, regular expressions are often used with the two string methods : search and replace. The search method uses an expression to search for a match, and returns the position of the match. The replace method returns a modified string where the pattern is replaced. The search method searches a string for a specified value and returns the position of the match:.

The replace method replaces a specified value with another value in a string:. Regular expression arguments instead of string arguments can be used in the methods above. Regular expressions can make your search much more powerful case insensitive for example.

In JavaScript, the RegExp object is a regular expression object with predefined properties and methods. You don't have to put the regular expression in a variable first.

The two lines above can be shortened to one:. If you want to report an error, or if you want to make a suggestion, do not hesitate to send us an e-mail:.

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Examples might be simplified to improve reading and learning. Tutorials, references, and examples are constantly reviewed to avoid errors, but we cannot warrant full correctness of all content. While using W3Schools, you agree to have read and accepted our terms of usecookie and privacy policy. Copyright by Refsnes Data. All Rights Reserved. W3Schools is Powered by W3.For released versions, see jq 1.

A jq program is a "filter": it takes an input, and produces an output. There are a lot of builtin filters for extracting a particular field of an object, or converting a number to a string, or various other standard tasks. Filters can be combined in various ways - you can pipe the output of one filter into another filter, or collect the output of a filter into an array. Some filters produce multiple results, for instance there's one that produces all the elements of its input array.

Piping that filter into a second runs the second filter for each element of the array. Generally, things that would be done with loops and iteration in other languages are just done by gluing filters together in jq. It's important to remember that every filter has an input and an output. Even literals like "hello" or 42 are filters - they take an input but always produce the same literal as output.

Operations that combine two filters, like addition, generally feed the same input to both and combine the results. The input to jq is parsed as a sequence of whitespace-separated JSON values which are passed through the provided filter one at a time.

The output s of the filter are written to standard out, again as a sequence of whitespace-separated JSON data. Note: it is important to mind the shell's quoting rules. As a general rule it's best to always quote with single-quote characters the jq program, as too many characters with special meaning to jq are also shell meta-characters. For example, jq "foo" will fail on most Unix shells because that will be the same as jq foowhich will generally fail because foo is not defined.

When using the Windows command shell cmd. This mode also parses the output of jq without the --seq option. Parse the input in streaming fashion, outputting arrays of path and leaf values scalars and empty arrays or empty objects. For example, "a" becomes [[],"a"]and [[],"a",["b"]] becomes [[0],[]][[1],"a"]and [[1,0],"b"]. This is useful for processing very large inputs.

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Use this in conjunction with filtering and the reduce and foreach syntax to reduce large inputs incrementally. Instead of running the filter for each JSON object in the input, read the entire input stream into a large array and run the filter just once. Don't parse the input as JSON. Instead, each line of text is passed to the filter as a string. If combined with --slurpthen the entire input is passed to the filter as a single long string.

Don't read any input at all! Instead, the filter is run once using null as the input. This is useful when using jq as a simple calculator or to construct JSON data from scratch. By default, jq pretty-prints JSON output. Using this option will result in more compact output by instead putting each JSON object on a single line. By default, jq outputs colored JSON if writing to a terminal. You can force it to produce color even if writing to a pipe or a file using -Cand disable color with -M.

Flush the output after each JSON object is printed useful if you're piping a slow data source into jq and piping jq's output elsewhere.The manual for the development version of jq can be found here. A jq program is a "filter": it takes an input, and produces an output.

There are a lot of builtin filters for extracting a particular field of an object, or converting a number to a string, or various other standard tasks.

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Filters can be combined in various ways - you can pipe the output of one filter into another filter, or collect the output of a filter into an array. Some filters produce multiple results, for instance there's one that produces all the elements of its input array.

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Piping that filter into a second runs the second filter for each element of the array. Generally, things that would be done with loops and iteration in other languages are just done by gluing filters together in jq. It's important to remember that every filter has an input and an output. Even literals like "hello" or 42 are filters - they take an input but always produce the same literal as output. Operations that combine two filters, like addition, generally feed the same input to both and combine the results.

The input to jq is parsed as a sequence of whitespace-separated JSON values which are passed through the provided filter one at a time. The output s of the filter are written to standard out, again as a sequence of whitespace-separated JSON data.

Note: it is important to mind the shell's quoting rules. As a general rule it's best to always quote with single-quote characters the jq program, as too many characters with special meaning to jq are also shell meta-characters. For example, jq "foo" will fail on most Unix shells because that will be the same as jq foowhich will generally fail because foo is not defined. When using the Windows command shell cmd.

jq regex

This more also parses the output of jq without the --seq option. Parse the input in streaming fashion, outputting arrays of path and leaf values scalars and empty arrays or empty objects.

For example, "a" becomes [[],"a"]and [[],"a",["b"]] becomes [[0],[]][[1],"a"]and [[1,0],"b"]. This is useful for processing very large inputs. Use this in conjunction with filtering and the reduce and foreach syntax to reduce large inputs incrementally. Instead of running the filter for each JSON object in the input, read the entire input stream into a large array and run the filter just once.

Don't parse the input as JSON. Instead, each line of text is passed to the filter as a string. If combined with --slurpthen the entire input is passed to the filter as a single long string.

Don't read any input at all! Instead, the filter is run once using null as the input. This is useful when using jq as a simple calculator or to construct JSON data from scratch. By default, jq pretty-prints JSON output. Using this option will result in more compact output by instead putting each JSON object on a single line. By default, jq outputs colored JSON if writing to a terminal.

jq regex

You can force it to produce color even if writing to a pipe or a file using -Cand disable color with -M. Flush the output after each JSON object is printed useful if you're piping a slow data source into jq and piping jq's output elsewhere. With this option, if the filter's result is a string then it will be written directly to standard output rather than being formatted as a JSON string with quotes. This can be useful for making jq filters talk to non-JSON-based systems.

Read filter from the file rather than from a command line, like awk's -f option. You can also use ' ' to make comments. Prepend directory to the search list for modules.By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. This won't alert even though I entered example example. I already tried.

This is a regular expression literal that is passed the i flag which means to be case insensitive. Keep in mind that email address validation is hard there is a 4 or 5 page regular expression at the end of Mastering Regular Expressions demonstrating this and your expression certainly will not capture all valid e-mail addresses.

Learn more. Jquery Value match Regex [duplicate] Ask Question. Asked 6 years, 8 months ago. Active 4 years, 2 months ago. Viewed k times. Deproblemify Deproblemify 2, 3 3 gold badges 20 20 silver badges 34 34 bronze badges. Active Oldest Votes. Pauwelyn You can use this.

jq regex

Take into account this will not accept lowecase letters. It's a case sensitive expression so abc abc. ABC is approved.

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When constructing a RE with new RegExpif you pass a sting, you'll need to double-escape backslashes. Best to avoid new RegExp unless you need to dynamically construct a RE from a variable. Sean Bright Sean Bright k 17 17 gold badges silver badges bronze badges. I don't see anything different other than that you are using a string instead of the arguably preferred regular expression literal syntax?

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The Overflow Blog. Podcast Ben answers his first question on Stack Overflow. The Overflow Bugs vs. Featured on Meta. Responding to the Lavender Letter and commitments moving forward. Linked Related Hot Network Questions. Stack Overflow works best with JavaScript enabled.This was at no cost to us.

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I had such a wonderful experience with them. Nordic Visitor, with Alexandra as our local travel specialist, set up our nine night self-drive tour and thought of everything. Our personal taxi driver met us at Keflavik Int'l Airport after an overnight flight from Boston to hand us our travel documents, local cellphone, and give us a guided tour on our way to our Keflavik hotel. The documents (map, detailed itinerary, highlights of Iceland on our route, useful information, expanded tourist information guidebook, and daily travel vouchers) directed us around the island with ease and were very professionally put together.

The Nordic Visitor arranged rental SUV (SUV allows access to restricted back-country roads) came with a free GPS. The middle level Comfort Accomodations were quite adequate. Alexandra was always there for us: before the trip to relay details and answer e-mail questions, on arrival in Reykjavik to further recommend sights along our route, during the trip if needed via out free cellphone, and at the end of the trip during the extra day that she arranged for us in Reykjavik.

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Our itinerary and maps were comprehensive, with many personal touches from Thordis, our travel agent. I hope to book another trip with Nordic Visitor again soon. Helena was one of the best travel consultants I have ever worked with.I think this is the next in line of teams that gets exposed by a superior Eagles roster. Full disclosure: I do not enjoy watching the Eagles try to handle Russell Wilson.

Without Richard Sherman, I think the Seahawks are vulnerable enough for the Eagles to take down.

jq regex

They lost to the dang Redskins, guys. These are the games they brought Jay Ajayi in for.

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Expect Doug Pederson to go to Ajayi and Blount early and often, and for Philadelphia to grind out a tough victory. I'm not going to spend a lot of time with analysis here, because the more I think about this game, the closer I come to second-guessing my prediction. It's just one of those games.

The last time I felt like this was Week 6 against the Panthers. I picked a 27-23 Eagles' win then too, and they won 28-23. Also, the Redskins won in Seattle just a few weeks ago and, I mean, did you watch that game on Thursday night. Like us on Facebook: PhillyVoice Sports Matt Mullin googletag. All rights reserved Facebook Twitter Google Plus LinkedIn Instagram Pinterest googletag.

MORE ON THE EAGLESEagles sign WR Alshon Jeffery to four-year extensionEagles-Seahawks injury report, with analysisRounding up the experts' picks for Eagles-SeahawksSeahawks haven't been this big of a home dog since. Mailbag: Vikings would win most tiebreakers with EaglesBut not everyone believes that the Birds will improve to 11-1 on Sunday night.

Rams Preview: Week 2 betting lines, predictions, analysis, how to watch USA TODAY Sports Redskins vs. Chicago The Washington Redskins are coming off a Week 1 loss to the Eagles at home, and now have to make a cross country trip to Los Angeles to face former offensive coordinator Sean McVay and the Rams.

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The Redskins spent the week answering questions about a number of issues, most very similar to what we saw during the preseason, which definitely worries some people.

Here are some of the biggest storylines and predictions from CSN Redskins insiders JP Finlay and Rich Tandler for Sunday. RELATED: WEEK 1 NFL POWER RANKINGSRadio: Redskins Radio Network, ESPN 710 AM, 100.


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