I have a file containing a line like
https://abcdefgh.com/123/pqrst/456/xyz.html
So I want to search for this line in that file and replace the end part i.e. xyz.html with mno.html
Will take the mno.html as input in the shell script.
How to do that ?
$ awk 'BEGIN{FS=OFS="/"} index($0,"https://abcdefgh.com/123/pqrst/456/xyz.html"){$NF="mno.html"} 1' file
https://abcdefgh.com/123/pqrst/456/mno.html
or if both values are already stored in shell variables:
$ old="https://abcdefgh.com/123/pqrst/456/xyz.html"
$ new="mno.html"
$ awk -v old="$old" -v new="$new" 'BEGIN{FS=OFS="/"} index($0,old){$NF=new} 1' file
https://abcdefgh.com/123/pqrst/456/mno.html
You can use this sed,
sed '/https:\/\/abcdefgh.com\/123\/pqrst\/456\/xyz.html/s#\(.*\/\)\(.*\)#\1mno.html#g' yourfile
. in .com and .html. It's also worth telling the OP they'd need to escape every other possible RE metacharacter, etc. that can occur in filenames too (e.g. *).using awk if the line is exactly as the example, I mean if there is no other characters before or after it
awk '{print gensub(/^(https:\/\/abcdefgh.com\/123\/pqrst\/456\/)xyz.html$/,"\\1mno.html","g")}' input.txt
Otherwise:
awk '{print gensub(/(https:\/\/abcdefgh.com\/123\/pqrst\/456\/)xyz.html/,"\\1mno.html","g")}' input.txt
. in .com and .html. It's also worth telling the OP they'd need to escape every other possible RE metacharacter, etc. that can occur in filenames too (e.g. *). To be honest, though, I'd just use sed if I was going with an RE replacement approach and was OK with having to escape a bunch of characters.