Native shebang: Difference between revisions
jq
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Hello, world!
</pre>
=={{header|jq}}==
{{works with|jq|1.4}}
jq can be invoked on the shebang line, e.g. as
#!/usr/local/bin/jq -M -n -f
or
#!/usr/bin/env/jq -M -n -f
'''Example 1:'''
<lang sh># .echo.foo
#!/usr/bin/env/jq -M -n -r -f
"Klaatu barada nikto!"</lang>
$ ./echo.foo
Klaatu barada nikto!
Command-line parameters of a script created with a shebang line in this manner are processed as jq command-line parameters.
Thus, instead of being able to invoke the script along the lines of
$ ./echo.foo "Hello world!" # nope
one would have to introduce a named variable to hold the command-line parameter,
as illustrated in the next example:
'''Example 2:'''
<lang sh># .echo.foo
#!/usr/bin/env/jq -M -n -r -f
$x</lang>
{{out}}
<lang sh>$ ./echo.foo --arg x "Hello, world!"
Hello, world!</lang>
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