Count and sort commands used in history

问题

I have a text file with bunch of commands, for example:

ls -l
/bin/bash/
cat file.txt
bash
cat somethingElse

What I have to do is, get the names of commands (ls, cat, bash) and count them. I already did this:

cut -d' ' -f1 file.txt | tr ' ' '\n' | sort | uniq -c

This works almost as I would like to--output is:

1 bash
1 /bin/bash
2 cat
1 ls

The only thing is wrong here, it has to IGNORE ABSOLUTE paths, so the output must look like this

2 bash
2 cat
1 cat

I was trying with a while loop with a if statement in it which checks if there is a "/" in a line, but it doesn't seem to work.

回答1:

With awk you can say print $1 to print the first word. However, you want the name alone. For this, you can use basename:

$ basename "/bin/bash"
bash

Then it is a matter of calling basename from awk. All together:

$ awk '{system("basename "$1)}' a
ls
bash
cat
bash
cat

Then you can pipe to sort and uniq:

$ awk '{system("basename "$1)}' a | sort | uniq -c
      2 bash
      2 cat
      1 ls

来源：https://stackoverflow.com/questions/29756621/count-and-sort-commands-used-in-history