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Re: Editing a piped in stream?




On 2018-07-10 13:31, Greg Wooledge wrote:
On Tue, Jul 10, 2018 at 01:16:09PM +0100, mick crane wrote:
I'd like to learn some awk having found it handy once.
apt says mawk is installed

in /usr/bin I have
lrwxrwxrwx 1 root root 21 Apr 2 22:29 awk -> /etc/alternatives/awk
-rwxr-xr-x  1 root root     658072 Jan 25 12:55 gawk
-rwxr-xr-x  1 root root       3189 Jan 25 12:55 igawk
-rwxr-xr-x  1 root root     121976 Mar 23  2012 mawk
lrwxrwxrwx  1 root root         22 Apr  2 22:29 nawk ->
/etc/alternatives/nawk

"awk" returns options for gawk and "mawk does nothing ( back to prompt)

So, what's the problem?

how to run mawk ?

mawk

You have already run it once, with no arguments, and it did nothing.
Now try giving it some arguments.

wooledg:~$ mawk -v foo=bar 'BEGIN {print foo}'
bar

See, just like awk.

OK
mick
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