I have a file, where I need to look for first 3 characters of string and replace whole srting.

my file contains like this:

/mangeg/list1/list2

I need to replace mangeg to mandev, here "man" in constant, so I need syntax to search for man*** replace with mandev.

Thanks.

CodePudding user response：

It's really not clear what you mean by "string", but perhaps you mean alpha-numeric. Or perhaps you just mean any character that is not /. Try one of:

sed -e 's@man[a-zA-Z]*@mandev@g'

or

sed -e 's@man[^/]*@mandev@g'

CodePudding user response：

whoami|cut -c5,6,7----=gives dev

sed -e 's@man[a-zA-Z]*@manwhoami|cut -c5,6,7@g' file_name

with this I am geting manwhoami|cut -c5,6,7 instead of mandev

any inputs plz.