What is the difference between "in shell?

1. Difference between single quotes and double quotes

Single quotation marks: A single quotation mark can only contain general characters without special characters. Double quotation marks include special characters.

Example:

# Name = vbird

# Echo $ name

Vbird

# Myname = "$ name its me"

# Echo $ myname

Vbird its me

# Myname = '$ name its me'

# Echo $ myname

$ Name its me

 

2. quotation marks ('): in a string of commands, the commands in quotation marks are executed first, and the execution results are used as external input information.

Example:

# Ls-l 'locate crontab'

First, use the locate command to list all the file name data and then use the LS command for processing.

Reference: laruence Linux basic learning for private dishes 11.2.1