update specific field in text file in specific line

Question

Below is a code that I\'m able to update the quantity of my book. But I cant seem to make it so that I can update my other things like book name, author, price etc. Heres th

Answer 1

What about sed?

sed 's/\bLord of The Ring\b/Lord of The King/' file

---

$ cat file
Harry Potter - The Half Blood Prince:J.K Rowling:40.30:10:50
The little Red Riding Hood:Dan Lin:40.80:20:10
Harry Potter - The Phoniex:J.K Rowling:50.00:30:20
Harry Potter - The Deathly Hollow:Dan Lin:55.00:33:790
Little Prince:The Prince:15.00:188:9
Lord of The Ring:Johnny Dept:56.80:100:38
Three Little Pig:Andrew Lim:89.10:290:189
All About Ubuntu:Ubuntu Team:76.00:55:133
Catch Me If You Can:Mary Ann:23.60:6:2
Happy Day:Mary Ann:12.99:197:101
haha:gaga:1:10:1

$ sed 's/\bLord of The Ring\b/Lord of The King/' file
Harry Potter - The Half Blood Prince:J.K Rowling:40.30:10:50
The little Red Riding Hood:Dan Lin:40.80:20:10
Harry Potter - The Phoniex:J.K Rowling:50.00:30:20
Harry Potter - The Deathly Hollow:Dan Lin:55.00:33:790
Little Prince:The Prince:15.00:188:9
Lord of The King:Johnny Dept:56.80:100:38
Three Little Pig:Andrew Lim:89.10:290:189
All About Ubuntu:Ubuntu Team:76.00:55:133
Catch Me If You Can:Mary Ann:23.60:6:2
Happy Day:Mary Ann:12.99:197:101
haha:gaga:1:10:1

Send the output with redirection > to a new file or use sed's -i option for in place editing.

• redirection

  sed 's/\bLord of The Ring\b/Lord of The King/' file>newfile
  

• in place etit with .bak file

  sed -i.bak 's/\bLord of The Ring\b/Lord of The King/' file