iB::Topic::Simple shell-based daemon

	Damn Small Linux :: Damn Small Linux Board The DSL Forums

» Welcome Guest
[ Log In :: Register ]

Damn Small Linux Board » Non-DSL Topics » Programming and Scripting » Simple shell-based daemon

		Mini-ITX Boards Sale, Fanless BareBones Mini-ITX, Bootable 1G DSL USBs, 533MHz Fanless PC <-- SALE $200 each!
		Get The Official Damn Small Linux Book. DSL Market , Great VPS hosting provided by Tektonic

Pages: (3) </ 1 2 [3] >/

[ Track this topic :: Email this topic :: Print this topic ]

Topic: Simple shell-based daemon, More a template than useful in itself.

< Next Oldest | Next Newest >

^thehatsrule^ Offline

Group: Members
Posts: 3275
Joined: July 2006

Posted: May 20 2007,17:52

Well field separators are even in posix shells by standard...

You can look up "anchors" in regexp. Also, I think gnu's grep uses -e if needed automatically, but better keep to the standard (or use egrep.. which has slight differences)

mikshaw

Group: Members
Posts: 4856
Joined: July 2004

Posted: May 20 2007,20:05

Quote

does the trailing `$' mean end of input?

I think it technically means "end of line" when talking about regular expressions in general, but i think in the case of grep, end of line and end of input would be pretty much the same.

I thought for a minute that you might be able to do multiple lines with " grep end_of_first_line$beginning_of_next_line" (or something similar), but it seems to present unexpected results.

--------------
http://www.tldp.org/LDP/intro-linux/html/index.html

humpty

Group: Members
Posts: 655
Joined: Sep. 2005

Posted: May 21 2007,15:40

for some reason the end-of-string anchor '$' doesn't work (v2.1b at least).

you can use the word boundary anchor '\b' instead

i.e ps | grep "proftpd\b"

[Edit] oops,

or rather; ps | grep "\bproftpd\b" for the whole word.

[/Edit]

^thehatsrule^ Offline

Group: Members
Posts: 3275
Joined: July 2006

Posted: May 21 2007,17:35

humpty, that's probably a busybox bug... since that was updated in newer 3.x versions.

the Missing M Offline

Group: Members
Posts: 35
Joined: Mar. 2007

Posted: May 27 2007,11:39

Thanks, they both work. :-)

It also issues a warning, before running the FTP server *and* PPP at the same time, now that my *nix-box can dial out directly [don't know if anyone noticed the addition of a `pon/poff' thing in there, but it's not hiding behind a router anymore].

Cheers,

Patrick.

--------------
Q: What is the difference between
a joke, and a lie?
A: A lie tends to obscure the truth,
while a joke often reveals it.

14 replies since May 11 2007,03:11

< Next Oldest | Next Newest >

[ Track this topic :: Email this topic :: Print this topic ]

Pages: (3) </ 1 2 [3] >/

Damn Small Linux Board » Non-DSL Topics » Programming and Scripting » Simple shell-based daemon