
jq:tldr:52adf
jq: Print all array items/object keys.
$ ${cat filename-json} | jq '.[]'
try on your machine
This command is used to read the content of a JSON file and parse it using the jq
command line tool, which is commonly used for manipulating JSON data.
Here is the breakdown of the command:
-
${cat filename-json}
: This part uses thecat
command to fetch the content of the file namedfilename-json
.cat
is a command that concatenates and displays the content of files.${}
is a syntax used to embed a command within another command. In this case, it executes thecat filename-json
command and provides its output as input to the next command in the pipeline.
-
|
: This is a pipe symbol used to redirect the output of the previous command to the input of the next command.- In this case, it passes the output of
cat filename-json
to the next command,jq
.
- In this case, it passes the output of
-
jq '.[]'
: This command takes the JSON input and applies the'.[]'
filter usingjq
.jq
is a powerful command-line JSON processor that can be used to extract, transform, and manipulate JSON data..[]
is a filter injq
that selects all the elements in an array or all the values in an object.- By applying this filter,
jq
will extract all the elements or values from the JSON data received as input.
In summary, the command reads the content of a JSON file and then uses jq
to extract all the elements or values from that JSON data.
This explanation was created by an AI. In most cases those are correct. But please always be careful and
never run a command you are not sure if it is safe.