CODEWITHSUNDEEP
shellunixappendtail
zedascouves
zedascouves

Reputation: 35

Is it possible to append a stdout to another stdout?

I'm trying to run a command like:

gunzip -dc file.gz | tail +5c

So this will output the binary file contents minus the first 4 bytes to stdout, and it works. Now I need to append 3 extra bytes to the end of the stream, but only using stdout, never a file.

Imagine the file contains:

1234567890

With the current command, I get:

567890

But I need:

567890000

So... any idea?

Upvotes: 0

Views: 172

Answers (3)

zedascouves
zedascouves

Reputation: 35

Ok, so based on the answers, the final solution was:

gzcat file.gz | tail -c +5 | echo 000

I didn't need to, and actually shouldn't, use the tr -d '\n', as it will remove the newlines in the middle of the file.

Upvotes: 0

yahe
yahe

Reputation: 1908

May something like

$ echo "`gunzip -dc file.gz | tail +5c`BBB"

(where BBB are your three extra bytes) work for you?

Upvotes: -1

MevatlaveKraspek
MevatlaveKraspek

Reputation: 2396

Try this :

{ gunzip -dc file.gz | tail -c 5 | tr -d '\n'; echo 000; }

Upvotes: 3

Related Questions