information related to echo command

mohit_parihar · 12-01-2009, 03:17 AM

can anyone tell me how does echo command work internally, i mean hows it display the text we entered, which libraries or files it uses.

centosboy · 12-01-2009, 03:42 AM

Quote:

Originally Posted by mohit_parihar

can anyone tell me how does echo command work internally, i mean hows it display the text we entered, which libraries or files it uses.

Code:

ldd `which echo`

or

Code:

strace echo

might tell you this

i92guboj · 12-01-2009, 07:06 AM

However you should first try this

Code:

$ type echo
echo is a shell builtin

Because as shown, most shells have echo implemented as a builtin, so the binary living in your hd is never really used. In that case, it's the source of your shell what you should be looking at.+