Replace in a string

[Leo The Cat]

Hi


I've this in input

/logs/test/1/xxxx

I'd like to replace
/logs/
by
/logs_backup/

The result must be /logs_backup/test/1/xxxx

How to do this small trick?


Regards
Den

[Leo The Cat]

to be precise

A=/logs/test/1/xxxx
A=Transformed_string($A)


Now A = /logs_backup/test/1/xxxx
mkdir -p $A

Something like that ....

[Ivan Ferreira · Accepted solution]

A=/logs/test
A=$(echo $A | sed 's/logs/logs_backup/')

echo $A

[Leo The Cat]

HUmmm

Is this will replace only the first occurence ?

Bests regards Ivan
Den

[James R. Ferguson]

Hi Den:

> Is this will replace only the first occurence ?

Well, yes on a line-by-line basis. That is every _line_ in your input file will have the substitution performed _once_.

If you add the 'g' flag to the substitution, then every occurance on every line will be replaced:

# sed 's/logs/logs_backup/g' file

Regards!

...JRF...

[Leo The Cat]

Hum

ok. But if the replace string is
/su01/bazar/
instead of /logs_backup/


/logs/test/1/xxxx
=> /su01/bazar/test/1/xxxx

Bests regards
Den

[ghostdog74]

well, do the same thing, but this time, using the new string...what's wrong with that? have you tried it using sed?

[James R. Ferguson]

Hi Den:

> ok. But if the replace string is
/su01/bazar/
instead of /logs_backup/

Escape the forward slashes like:

# X=/logs/test/1/xxxx
# echo ${X}|sed -e 's/\/logs/\/su01\/bazar/g'
/su01/bazar/test/1/xxxx

Regards!

...JRF...

[Leo The Cat]

Thanks to you Guys
Bests Regards
Den