These are some tools I often write one-liners for when looking at data on the console. It's the same one-liners every time, so I may as well package them and save some repetition.

• fld extracts columns from input. Credit Mark-Jason Dominus for the idea (I think Mark calls this "f").

    ps aux | grep myproc | fld 2
  

• uni identifies and enumerates Unicode characters. Credit Larry Wall for the idea and original implementation.

    uni 𝄞
    uni math fraktur
    uni 200a
  

• tally sums columns from input. "sum" was taken because it runs a checksum on the linux distribution I use.

    # sum file sizes
    ls -l | tally 5
  

• hist produces a histogram from its input. This one is not entirely trivial if you want to graph the output, which hist does.

    # The distribution of words in Hamlet follows a power law.
    # Default graph is linear, can use -scale=log or -graph=false to turn off.
    wget -O - https://www.gutenberg.org/cache/epub/1524/pg1524.txt | \
        grep -A9999 HAMLET | hist -words
  

go get github.com/gaal/shstat/fld
go get github.com/gaal/shstat/hist
go get github.com/gaal/shstat/tally
go get github.com/gaal/shstat/ucd
go get github.com/gaal/shstat/uni

These tools are distributed under the MIT/X license.

godoc github.com/gaal/shstat/fld
godoc github.com/gaal/shstat/hist
godoc github.com/gaal/shstat/tally
godoc github.com/gaal/shstat/ucd
godoc github.com/gaal/shstat/uni

I want to keep the interface as simple as possible. But if there's a strong reason to change the behavior of one of these tools, write me before the end of May 2016 and I'll consider it. After that I'll be more conservative about breaking things.

If you want different output order from hist, make sure you know about the -n and -k options to sort(1).

Gaal Yahas, gaal@forum2.org.