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commandlinefu.com is the place to record those command-line gems that you return to again and again.

Delete that bloated snippets file you've been using and share your personal repository with the world. That way others can gain from your CLI wisdom and you from theirs too. All commands can be commented on, discussed and voted up or down.


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Universal configuration monitoring and system of record for IT.
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May 19, 2015 - A Look At The New Commandlinefu
I've put together a short writeup on what kind of newness you can expect from the next iteration of clfu. Check it out here.
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I'm Jon, I'll be maintaining and improving clfu. Thanks to David for building such a great resource!
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Psst. Open beta.

Wow, didn't really expect you to read this far down. The latest iteration of the site is in open beta. It's a gentle open beta-- not in prime-time just yet. It's being hosted over at UpGuard (link) and you are more than welcome to give it a shot. Couple things:

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Your feedback is appreciated via the form on the beta page. Thanks! -Jon & CLFU Team

Get a PostgreSQL servers version

Terminal - Get a PostgreSQL servers version
psql -h <SERVER NAME HERE> -c 'SELECT version();' | grep -v 'version\|---\|row\|^ *$' | sed 's/^\s*//'
2014-03-17 18:36:40
User: pnelsonsr
Functions: grep sed
0
Get a PostgreSQL servers version

In a multiple PostgreSQL server environment knowing the servers version can be important. Note that psql --version returns just the local psql apps version which may not be what you want. This command dumps the PostgreSQL servers version out to one line. You may need to add more command line options to the psql command for your connection environment.

Alternatives

There is 1 alternative - vote for the best!

Terminal - Alternatives
psql -h <SERVER NAME HERE> -t -c 'SELECT version();' |head -1
2014-04-25 08:26:23
User: hxre
Functions: head
0

-t, --tuples-only print rows only

psql -X -A -t -c "SELECT version();"
2014-05-01 18:10:20
User: malathion
0

Without using a pipe.

-X ignores the user's .psqlrc configuration file

-A sets un-aligned table output mode

-t prints rows only (no headers or footers)

Know a better way?

If you can do better, submit your command here.

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