Question

i got some files with name start as eg_. and only each contains one single line

eg_01.txt:
@china:129.00

eg_02.txt
@uk:219.98

eg_03.txt
@USA:341.90

……

i am expecting to cat them in to a single line to send by URL like:
@china:129.00@uk:219.98@USA:341.90

i use
echo cat eg_*

it give me the output look like a string, but it actually contains new line:
“@china:129.00

@uk:219.98
@USA:341.90″

is there any other way i can construct that string which expected and get rid of new line and even the space? is only cat enough to do this?

thanks in advance

Answer 1

You could always pipe it to tr

tr "\n" " "

That removes all newlines on stdin and replaces them with spaces

EDIT: as suggested by Bart Sas, you could also remove newlines with tr -d

tr -d "\n"

(note: just specifying an empty string to tr for the second argument won’t do)