Use the contents of a file to replace a string using SED

后端未结

关注

 2  1600

小鲜肉 2021-01-01 10:22

What would be the sed command for mac shell scripting that would replace all iterations of string \"fox\" with the entire string content of myFile.txt.

myFile.txt wo

2条回答

难免孤独 (楼主)

2021-01-01 10:28
You can use the r command. When you find a 'fox' in the input...
```
/fox/{
```
...replace it for nothing...
```
    s/fox//g
```
...and read the input file:
```
    r f.html
}
```
If you have a file such as:
```
$ cat file.txt
the
quick
brown
fox
jumps
over
the lazy dog
fox dog
```
the result is:
```
$ sed '/fox/{
    s/fox//g
    r f.html
}' file.txt
the
quick
brown

    
```


  

  
    
jumps
over
the lazy dog
 dog

EDIT: to alter the file being processed, just pass the -i flag to sed:

sed -i '/fox/{
    s/fox//g
    r f.html
}' file.txt

Some sed versions (such as my own one) require you to pass an extension to the -i flag, which will be the extension of a backup file with the old content of the file:

sed -i.bkp '/fox/{
    s/fox//g
    r f.html
}' file.txt

And here is the same thing as a one liner, which is also compatible with Makefile

sed -i -e '/fox/{r f.html' -e 'd}'

0 讨论(0)

查看其它2个回答