Re: Extracting a variable listing
On Wed, 18 Aug 2010, Jack L. Stone wrote: The content I need will always fall beneath a row of pound signs, and there is content above that row I don't want, like this: bunch of rows I don't need here ### --- the top of stuff needed row1 If you want the '#' line in the output cat YourFile | sed -n -e '/#/,$p' If you don't, then cat YourFile | sed -e '1,/#/d' The above assumes that you will have at least 5 '#' chars on your divider line, and never before in the file. Increase the number '#' symbols if the above example is strictly literal. Note the -n in the first line. A. ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
Re: Extracting a variable listing
At 10:53 AM 8.18.2010 -0300, A. Wright wrote: On Wed, 18 Aug 2010, Jack L. Stone wrote: The content I need will always fall beneath a row of pound signs, and there is content above that row I don't want, like this: bunch of rows I don't need here ### --- the top of stuff needed row1 If you want the '#' line in the output cat YourFile | sed -n -e '/#/,$p' If you don't, then cat YourFile | sed -e '1,/#/d' The above assumes that you will have at least 5 '#' chars on your divider line, and never before in the file. Increase the number '#' symbols if the above example is strictly literal. Note the -n in the first line. A. Worked like a charm, Andrew! Just what I needed! Jack (^_^) Happy trails, Jack L. Stone System Admin Sage-american ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
Re: Extracting a variable listing
El día Wednesday, August 18, 2010 a las 09:22:37AM -0500, Jack L. Stone escribió: At 10:53 AM 8.18.2010 -0300, A. Wright wrote: On Wed, 18 Aug 2010, Jack L. Stone wrote: The content I need will always fall beneath a row of pound signs, and there is content above that row I don't want, like this: bunch of rows I don't need here ### --- the top of stuff needed row1 If you want the '#' line in the output cat YourFile | sed -n -e '/#/,$p' If you don't, then cat YourFile | sed -e '1,/#/d' ... http://en.wikipedia.org/wiki/Cat_(Unix)#Useless_use_of_cat :-) matthias -- Matthias Apitz t +49-89-61308 351 - f +49-89-61308 399 - m +49-170-4527211 e g...@unixarea.de - w http://www.unixarea.de/ Solidarity with the zionistic pirates of Israel? Not in my name! ¿Solidaridad con los piratas sionistas de Israel? ¡No en mi nombre! ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
Re: Extracting a variable listing
Jack L. Stone schrieb:
Sorry to return to the trough again for script help, but find excellent
answers here when all else fails, and I am not very good at it.
Trying to develop a script (non-bash) that will extract a variable list of
content on a daily basis so I can add it to a master list. Once I have
this, I can do the rest of the scripting needed.
Here's an example of the need.
The content I need will always fall beneath a row of pound signs, and there
is content above that row I don't want, like this:
bunch of rows I don't need here
### --- the top of stuff needed
row1
row2
row3
row4
etc, etc
So, I need a way to pull out the rows (which vary daily) beneath the pound
row and place it in a new temp file that I can cat into a master file.
Appreciate your kind help once again (beers on me!)
All the best!
Jack
(^_^)
Happy trails,
Jack L. Stone
System Admin
Sage-america
awk is your friend .-)
this script does exactly what you need
extract.awk
---
/^#+$/ {
print $0;
getline;
print ,$0
while (match($0, ^[[:print:]]+$)) {
print $0;
getline;
}
}
---
You can still adjust the pattern in match to suit your need.
invoke it with
awk -f extract.awk yourfile
Andreas
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Re: Extracting a variable listing
Dr. A. Haakh schrieb:
Jack L. Stone schrieb:
Sorry to return to the trough again for script help, but find excellent
answers here when all else fails, and I am not very good at it.
Trying to develop a script (non-bash) that will extract a variable
list of
content on a daily basis so I can add it to a master list. Once I have
this, I can do the rest of the scripting needed.
Here's an example of the need.
The content I need will always fall beneath a row of pound signs, and
there
is content above that row I don't want, like this:
bunch of rows I don't need here
### --- the top of stuff needed
row1
row2
row3
row4
etc, etc
So, I need a way to pull out the rows (which vary daily) beneath the
pound
row and place it in a new temp file that I can cat into a master
file.
Appreciate your kind help once again (beers on me!)
All the best!
Jack
(^_^)
Happy trails,
Jack L. Stone
System Admin
Sage-america
awk is your friend .-)
this script does exactly what you need
extract.awk
---
/^#+$/ {
getline;
while (match($0, ^[[:print:]]+$)) {
print $0;
getline;
}
}
---
You can still adjust the pattern in match to suit your need.
invoke it with
awk -f extract.awk yourfile
Andreas
I forgot to remove some extra output :-)
--
Dr.-Ing. Andreas Haakh
Schwanengasse 13 * 64380 Roßdorf * andr...@haakh.de
Tel. 06154-694822 Fax. 06154-694821 Mobil 0173-361.6884
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Re: Extracting a variable listing
Date: Wed, 18 Aug 2010 17:14:50 +0200
From: Dr. A. Haakh bugrepor...@haakh.de
Subject: Re: Extracting a variable listing
Jack L. Stone schrieb:
The content I need will always fall beneath a row of pound signs, and there
is content above that row I don't want, like this:
bunch of rows I don't need here
### --- the top of stuff needed
row1
row2
row3
row4
etc, etc
awk is your friend .-)
this script does exactly what you need
extract.awk
---
/^#+$/ {
print $0;
getline;
print ,$0
while (match($0, ^[[:print:]]+$)) {
print $0;
getline;
}
}
**GAAACK**
let awk do the work for you
BEGIN { printing = 0 ; }
printing==1{ print $0 ; }
/^#+$/ { printing = 1 ; }
usage: awk -f {thatfile} {datafile} {masterfile}
The BEGIN line is optional, and the '==1' is also un-necessary, but their
presecee makes the logic clearer for 'somebody else' that looks at it.
One can extract a block of lines from a file with the same logic. just
add a pattern with an action of 'printing=0'.
If the 'printing=1' line is above the 'print $0' line, the start marker
line will be included in the output, if below it won't show.
Similarly, if the 'printing=0' line is _below_ the 'print' line, the end
marker line will be included, if above it, it won't show.
The same basic approach trivially generalizes to extracting multiple blocks
with different start/end markers, or to more complex markers -- e.g. trigger
criteria that involve multiple lines from the source file.
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