学习工具

命令速查

tldr，省去详细的解说，用最简单的例子说明命令的使用方式。

sudo apt-get install tldr

例如要查看wget命令的使用：

$ tldr wget
wget
Download files from the Web.
Supports HTTP, HTTPS, and FTP.
More information:
https://www.gnu.org/software/wget
.

 - Download the contents of an URL to a file (named "foo" in this case):
   wget {{https://example.com/foo}}

 - Download the contents of an URL to a file (named "bar" in this case):
   wget -O {{bar}} {{https://example.com/foo}}

 - Download a single web page and all its resources with 3-second intervals between requests (scripts, stylesheets, images, etc.):
   wget --page-requisites --convert-links --wait=3 {{https://example.com/somepage.html}}

 - Download all listed files within a directory and its sub-directories (does not download embedded page elements):
   wget --mirror --no-parent {{https://example.com/somepath/}}

 - Limit the download speed and the number of connection retries:
   wget --limit-rate={{300k}} --tries={{100}} {{https://example.com/somepath/}}

 - Download a file from an HTTP server using Basic Auth (also works for FTP):
   wget --user={{username}} --password={{password}} {{https://example.com}}

 - Continue an incomplete download:
   wget -c {{https://example.com}}

 - Download all URLs stored in a text file to a specific directory:
   wget -P {{path/to/directory}} -i {{URLs.txt}}