Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom

fix typo #623

Open
wants to merge 1 commit into
base: master
Choose a base branch
from
Open

fix typo #623

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
2 changes: 1 addition & 1 deletion README-zh-Hant.md
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -122,7 +122,7 @@

- 在 Bash 中，要注意其中有許多形式的擴展。檢查變數是否存在：`${name:?error message}`。例如，當 Bash 指令碼需要一個參數時，可以使用這樣的程式碼`input_file=${1:?usage: $0 input_file}`。數學表示式：`i=$(( (i + 1) % 5 ))`。序列：`{1..10}`。截斷字元串：`${var%suffix}` 和`${var#prefix}`。例如，假設`var=foo.pdf`，那麼`echo ${var%.pdf}.txt` 將輸出`foo.txt`。

- 使用括號擴展（`{`...`}`）來減少輸入相似文字，並自動化文字組合。這在某些情況下會很有用，例如`mv foo.{txt,pdf} some-dir`（同時移動兩個檔案），`cp somefile{,.bak}`（會被擴展成`cp somefile somefile .bak`）或者`mkdir -p test-{a,b,c}/subtest-{1,2,3}`（會被擴展成所有可能的組合，並創建一個目錄樹）。
- 使用括號擴展（`{`...`}`）來減少輸入相似文字，並自動化文字組合。這在某些情況下會很有用，例如`mv foo.{txt,pdf} some-dir`（同時移動兩個檔案），`cp somefile{,.bak}`（會被擴展成`cp somefile somefile.bak`）或者`mkdir -p test-{a,b,c}/subtest-{1,2,3}`（會被擴展成所有可能的組合，並創建一個目錄樹）。

- 通過使用`<(some command)` 可以將輸出視為檔案。例如，對比本地檔案`/etc/hosts` 和一個​​遠端檔案：
```sh
Expand Down