How can I extract the content following a specific string in a shell?
You can use string slicing to retrieve the content after a certain string. Here are the specific steps:
- Can you please rephrase the following sentence in simpler terms?
- Use slicing operation to retrieve the desired content, where the format of the slice is [start:end], with start indicating the starting position and end indicating the ending position. If end is omitted, it means to take up to the end of the string.
- The latest text
The following is a sample code:
text="This is a sentence."
new_text=${text#*is } # 取"is "后面的内容
echo $new_text
The code above will output a sentence, indicating successful retrieval of the content after the string.
Additionally, if you need to remove a certain substring from a string, you can use the format ${string//substring/replacement}, where the substring is the part you want to replace and the replacement is the content to replace it with. If you leave the replacement empty, it means deleting that substring. For example:
text="This is a sentence."
new_text=${text//is /} # 删除所有的"is "子字符串
echo $new_text
The above code will output the sentence “Th a sentence.”, indicating that all occurrences of the substring “is” have been successfully deleted from the string.