CODEWITHSUNDEEP
linuxbashterminalsh
reza
reza

Reputation: 375

Replace a word with another in bash

I want to change all of the words in a text who matches a certain word with another one in bourne shell. For example:

hello sara, my name is sara too.

becomes: 

hello mary, my name is mary too.

Can anybody help me?
I know that grep find similar words but I want to replace them with other word.

Upvotes: 17

Views: 50585

Answers (4)

anubhava
anubhava

Reputation: 785008

Pure bash way:

before='hello sara , my name is sara too .'
after="${before//sara/mary}"
echo "$after"

OR using sed:

after=$(sed 's/sara/mary/g' <<< "$before")
echo "$after"

OUTPUT:

hello mary , my name is mary too .

Upvotes: 20

jaypal singh
jaypal singh

Reputation: 77085

Or awk

awk '{gsub("sara","mary")}1' <<< "hello sara, my name is sara too."

Upvotes: 1

Wes Hardaker
Wes Hardaker

Reputation: 22252

You can use sed:

# sed 's/sara/mary/g' FILENAME

will output the results. The s/// construct means search and replace using regular expressions. The 'g' at the end means "every instance" (not just the first).

You can also use perl and edit the file in place:

# perl -p -i -e 's/sara/mary/g;' FILENAME

Upvotes: 4

Niklas B.
Niklas B.

Reputation: 95298

You can use sed for that:

$ sed s/sara/mary/g <<< 'hello sara , my name is sara too .'
hello mary , my name is mary too .

Or if you want to change a file in place:

$ cat FILE
hello sara , my name is sara too .
$ sed -i s/sara/mary/g FILE
$ cat FILE
hello mary , my name is mary too .

Upvotes: 12

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