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Small update for the tutorial

This commit is contained in:
sharkdp 2017-10-08 21:46:29 +02:00
parent 0cd9d8c3a6
commit b9b6964f30
1 changed files with 5 additions and 25 deletions
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README.md
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@ -215,7 +215,7 @@ this_is_a_test
```
The search pattern is treated as a regular expression. To show only entries that start with "test",
we can simply run:
we can call:
```
> fd '^test'
sub_dir/more_dir/even_further_down/test_seven
@ -303,7 +303,7 @@ sub_dir/more_dir/even_further_down/not_me.sh
sub_dir/more_dir/not_file
```
Searching for a file extension is easy too, using the `-e` (or `--file-extensions`) switch for file
Searching for a file extension is easy too, using the `-e` (or `--extension`) switch for file
extensions:
```
> fd -e sh
@ -318,28 +318,8 @@ fd_examples/desub_dir/old_test.txt
fd_examples/sub_dir/new_test.txt
```
What if we wanted to run a command for each of the search results? We can use `xargs` to do that:
`fd -0 'test' | xargs -0 -I {} cp {} {}.new`
In this example there are a couple things to take note:
- First we are telling `fd` we want a null character to seperate the files `-0`, this is
important when passing to `xargs`.
- Second, we are piping the output to `xargs` and telling this program to expect input null
terminated with `-0` (the same syntax that `fd` was built with).
- Then for fun we are using `-I` to replace a string `{}` and lauching `cp` to copy the file `{}`
to a file ending in `{}.new`.
`fd` can also show us the absolute path vs. the full path with `-a` (`--absolute-path`):
If we want to run a command for each of the search results, we can use the `-0` option to pipe
the output to `xargs`:
```
> fd -a new
/Users/fd_user/fd_examples/sub_dir/more_dir/even_further_down/test_seven.new
/Users/fd_user/fd_examples/sub_dir/more_dir/even_further_down/testing_eight.new
/Users/fd_user/fd_examples/sub_dir/more_dir/test_file_six.new
/Users/fd_user/fd_examples/sub_dir/test_file_five.new
/Users/fd_user/fd_examples/sub_dir/test_file_four.new
/Users/fd_user/fd_examples/sub_dir/test_file_three.new
/Users/fd_user/fd_examples/test_file_one.new
/Users/fd_user/fd_examples/test_file_two.new
/Users/fd_user/fd_examples/test_one.new
/Users/fd_user/fd_examples/this_is_a_test.new
> fd -0 'test' | xargs -0 wc -l
```