Question

If the string is of the pattern XxxXyzAbc…
The expected out put from sed has to be Xxx Xyz Abc …

eg: if the string is QcfEfQfs, then the expected output is Qcf Ef Efs.

If i try to substitute the pattern [a-z][A-Z] with space then the sed will replace the character or pattern with space, like Qc f fs.

Is there any way to insert space in between without replacing the pattern ?.

Kindly help. Thanks.

Answer 1

Use match groups.

$ sed 's/\([a-z]\)\([A-Z]\)/\1 \2/g' <<< 'XxxXyzAbc'
Xxx Xyz Abc