linux merge multiple files, but skip lines starting with '#'

Question

I have a list of 10 files that I want to merge into one file.

file1.txt
file2.txt
...
file10.txt

I normally do this with cat

cat file*.txt > merged_file.txt

However, I don't want the lines starting with '#' to be included in the merged_file.txt. How do I do this?

So just remove lines starting with `#`? https://stackoverflow.com/a/8207172/9072753 — KamilCuk, Jul 10 '19 at 14:16

score 2 · Accepted Answer · answered Jul 10 '19 at 14:18

2

Something like this: cat file*.txt | egrep -v '^#.*$' > merged_file.txt

answered Jul 10 '19 at 14:18

Olivier Darrouzet

2

You could `egrep ... -h file*.txt`. Also note that `egrep` is deprecated . Use `grep -E`. – KamilCuk Jul 10 '19 at 14:22
2

You can omit '.*$' from the `grep` pattern. – Bodo Jul 10 '19 at 15:42
You are right, a simpler form: `cat file*.txt | egrep -v '^#' > merged_file.txt – Olivier Darrouzet Jul 10 '19 at 15:51

1 Answers1