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Bookmark or Share- How does an SSL certificate chain bundle work? - Stack OverflowUnix: cat cert2.pem cert1.pem root.pem > cert2-chain.pem Windows: copy /A cert1.pem+cert1.pem+root.pem cert2-chain.pem /A 2.2 Run this command. openssl verify -CAfile cert2-chain.pem cert3.pem 2.3 If this is OK, proceed to the next one (cert4.pem in this case) Thus for the first round through the commands would be
- How do I read the first line of a file using cat? - Stack OverflowI'm surprised that this question has been around as long as it has, and nobody has provided the pre-mapfile built-in approach yet.
- Count the frequency that a value occurs in a dataframe columnI have a dataset category cat a cat b cat a I'd like to return something like the following which shows the unique values and their frequencies category freq cat a 2 cat b 1
- How can I pretty-print JSON in a shell script? - Stack OverflowLatest use-case: Chrome, Dev console, Network tab, export all as HAR file, "cat site.har | underscore select '.url' --outfmt text | grep mydomain"; now I have a chronologically ordered list of all URL fetches made during the loading of my company's site. Pretty printing is easy: underscore -i data.json print Same thing:
- linux - How can I copy the output of a command directly into my ...cat file | xclip. Paste the text you just copied into a X application: xclip -o. To paste somewhere else other than an X application, such as a text area of a web page in a browser window, use: cat file | xclip -selection clipboard Consider creating an alias: alias "c=xclip" alias "v=xclip -o"
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