On 08/25/2015 11:21 AM, Alice Wonder wrote:
cat file.txt |\
sed -e s?"foo"?"bar"?g |\
sed -e s?"dirty"?"clean?" |\
> file2.txt
I don't understand why you'd quote that way. Though unlikely, you could
potentially match a filename in the working directory, and hose the sed
command.
On 08/25/2015 11:02 AM, Gordon Messmer wrote:
Additionally, you can avoid using "cat" to make the script more
efficient. You'll start fewer processes, and complete more quickly. cat
is almost never needed unless you actually need to con"cat"enate
multiple files.
I sometimes like to use cat
On 08/25/2015 10:50 AM, Jerry Geis wrote:
cat my_file.txt | sed 's/CANCELID/$CHANGE/' > cancel.txt
sed doesn't perform environment variable expansion. That is to say that
when you instruct sed to substitute "$CHANGE" for "CANCELID", "$CHANGE"
is a literal string that will be substituted.
b
On 8/25/2015 10:50 AM, Jerry Geis wrote:
--- This is the two line script
CHANGE="1234"
cat my_file.txt | sed 's/CANCELID/$CHANGE/' > cancel.txt
---
and the my_file.txt has:
CANCELID
it gets changed to $CHANGE instead of the actual value 1234 .
I tried
- Original Message -
| I am trying to use sed to change a value in a pipe.
|
| --- This is the two line script
| CHANGE="1234"
|
| cat my_file.txt | sed 's/CANCELID/$CHANGE/' > cancel.txt
| ---
|
| and the my_file.txt has:
| CANCELID
|
| it gets
On Tue, Aug 25, 2015 at 1:50 PM, Jerry Geis wrote:
> I am trying to use sed to change a value in a pipe.
>
> --- This is the two line script
> CHANGE="1234"
>
> cat my_file.txt | sed 's/CANCELID/$CHANGE/' > cancel.txt
> ---
>
> and the my_file.txt has:
> CA
I am trying to use sed to change a value in a pipe.
--- This is the two line script
CHANGE="1234"
cat my_file.txt | sed 's/CANCELID/$CHANGE/' > cancel.txt
---
and the my_file.txt has:
CANCELID
it gets changed to $CHANGE instead of the actual value 1234 .
Hahahaha,
I see that you posted this in quite a few places. Let me repeat it here
then. BTW, do a bit of homework if you do need fine tuning before
posting back on this list.
awk 'BEGIN {sawpattern=0} "^[[:alpha:]], ^[[:alpha:]]" {if (($0
~/[[:alpha:]]/ )&& (sawpattern == 0)) {sawpattern=1}
thank you, and sorry, if i had formulated wrong, but the "SOMETEXT#X"
is a random STRING, like:
$ cat testfile.txt
alsjflsajfkljasdf
asfklasjlkyxcvo
kldfjlkasjdfasdf
kasfjxcvklajdflas
yxcvkjasafjads
asdfjkldjlasj
uiyxzckjhasfsd
$
$ awk 'BEGIN {sawpattern=0} "^SOMETEXT, ^SOMETEXT" {if (($0
~/S
hyphen's [ - ] are just for marking the start/end of a pattern, but
there are _not in_ the pattern!
"OUTPUT" is what i want after "seding" the PATTERN#X's
so i for e.g.: need the first, and second "magic"
sed "FIRSTMAGIC" PATTERN#1
sed "SECONDMAGIC" PATTERN#2
PATTERN#1:
-
> % cat foo
> Hello line 1
> Hello line 2
> Hello line 3
>
> # To change just line 2
> % sed '2s/Hello/There/'
> Hello line 1
> There line 2
> Hello line 3
>
> # To change line 2 and onwards
> % sed '2,$s/Hello/There/'
> Hello line 1
> There line 2
> There line 3
>
> It's that simple :-)
>
>
y
> I thought i could use sed to change a particular line number but i dont see
> that in the man page, i am trying to change a value from line number 6
% cat foo
Hello line 1
Hello line 2
Hello line 3
# To change just line 2
% sed '2s/Hello/There/'
Hello line 1
There line 2
Hello line 3
# To chan
I need to change a value in a file, but this line occurs more than once in
this file therefore as i know the line number this value appears on how can
i change that?
I thought i could use sed to change a particular line number but i dont see
that in the man page, i am trying to change a value from
> -Original Message-
> From: centos-boun...@centos.org [mailto:centos-boun...@centos.org] On
> Behalf Of Paul Heinlein
> Sent: Tuesday, March 09, 2010 11:08 AM
> To: CentOS mailing list
> Subject: Re: [CentOS] sed help
>
> On Tue, 9 Mar 2010, chloe K wrote:
>
On Tue, 9 Mar 2010, chloe K wrote:
> Hi
>
> Can I know how to use sed to substitue 2 instead of 1 at the same time?
>
> eg:
>
> sed 's/pchloe.com/abc.com/ ; /192.92.123.5/10.10.0.3/g' orgfile >> newfile
sed \
-e 's/pchloe\.com/abc.com/g' \
-e 's/192\.92\.123\.5/10.10.0.3/g' \
orgfile >>
Hi
Can I know how to use sed to substitue 2 instead of 1 at the same time?
eg:
sed 's/pchloe.com/abc.com/ ; /192.92.123.5/10.10.0.3/g' orgfile >> newfile
thank you
__
Be smarter than spam. See how smart SpamGuard is at givi
Am Montag, den 21.09.2009, 15:06 +0200 schrieb Alan McKay:
> Hey folks,
>
> Once upon a time I saw some sed magic to take the output of "rpm -qa"
> and strip away all the version info to give just the RPM base names.
>
> And of course I forgot to note it :-/ And have not been able to
> replicate
On Mon, Sep 21, 2009 at 3:06 PM, Alan McKay wrote:
> avahi-0.6.16-1.el5
> avahi-glib-0.6.16-1.el5
>
> produce this :
>
> avahi
> avahi-glib
r...@knodd:~# rpm -qa --queryformat "%{name}\n" avahi\*
avahi
avahi-compat-libdns_sd
avahi-glib
r...@knodd:~#
Ralph
Hey folks,
Once upon a time I saw some sed magic to take the output of "rpm -qa"
and strip away all the version info to give just the RPM base names.
And of course I forgot to note it :-/ And have not been able to
replicate it myself.
e.g. from this :
avahi-0.6.16-1.el5
avahi-glib-0.6.16-1.el
Hi,
On Wed, Aug 19, 2009 at 16:20, Joseph L.
Casale wrote:
> '/string/a \\tstuff\t\t\tmorestuff' != "/string/a \\tstuff\t\t\tmorestuff"
Yes, indeed... The rules of quoting and backslashes in the shell are
not very uniform and can get quite tricky... Also, the \t is
interpreted by sed, and AFAIK i
>The "a" command expects to be followed by a "\", so it's eating the
>one in your first "\t". If you add another "\" it seems to work as you
>want it to:
>
>$ echo string | sed '/string/a \\tstuff\t\t\tmorestuff'
>string
>stuff morestuff
>$
Ah ffs, lol...
It would also he
Hi,
On Wed, Aug 19, 2009 at 13:24, Joseph L.
Casale wrote:
> Hey guys,
> I am trying to make sed append every line containing a string with another
> line.
> problem is the appended line needs to start with a tab:
> # sed -i '/string/a \tstuff\t\t\tmorestuff' file
> Obviously \t or \x09 etc doesn
Hey guys,
I am trying to make sed append every line containing a string with another line.
problem is the appended line needs to start with a tab:
# sed -i '/string/a \tstuff\t\t\tmorestuff' file
Obviously \t or \x09 etc doesn't get interpreted unless there are other
characters
before it? How can
Stephen Harris wrote:
On Fri, May 23, 2008 at 06:59:24PM +0200, Thomas Johansson wrote:
Stephen Harris wrote:
sed 's/^\([^]*[ ]*[^]*\)\([ ]*.*\)$/\1.contoso.com\2/'
(where there's a space *and* a TAB inside each of the [ ] )
The above version easier to read and "copy paste
On Fri, May 23, 2008 at 8:50 AM, Matt Shields <[EMAIL PROTECTED]> wrote:
>
> I'd use awk. Put the lines in a file, then do this
>
> cat test.txt | awk '{ print $1 "\t" $2 ".centos.com\t" $3 "\t" $4 }'
>
Or just awk '{ print $1 "\t" $2 ".centos.com\t" $3 "\t" $4 }' test.txt
> newhostsfile
(The ca
On Fri, May 23, 2008 at 06:59:24PM +0200, Thomas Johansson wrote:
> Stephen Harris wrote:
> > sed 's/^\([^]*[ ]*[^]*\)\([ ]*.*\)$/\1.contoso.com\2/'
> >
> >(where there's a space *and* a TAB inside each of the [ ] )
> >
> The above version easier to read and "copy paste". Space
Stephen Harris wrote:
On Fri, May 23, 2008 at 06:02:29PM +0200, Mihai T. Lazarescu wrote:
On Fri, May 23, 2008 at 08:41:19AM -0700, Scott McClanahan wrote:
1.1.1.1foo
10.10.10.10bar bar2
100.100.100.100foobar foobar2 foobar3
== After ==
1.1.1.1
On Fri, May 23, 2008 at 06:02:29PM +0200, Mihai T. Lazarescu wrote:
> On Fri, May 23, 2008 at 08:41:19AM -0700, Scott McClanahan wrote:
> > 1.1.1.1foo
> > 10.10.10.10bar bar2
> > 100.100.100.100foobar foobar2 foobar3
> > == After ==
> > 1.1.1.1foo.contoso.com
> > 10.10.10.10ba
On Fri, May 23, 2008 at 08:41:19AM -0700, Scott McClanahan wrote:
> Not specific to CentOS but I know you guys would be really helpful anyhow.
> Basically, I have a file which has been editted in the past very similarly to
> the hosts file only now I want to use it as a hosts file and need to run
On Fri, May 23, 2008 at 11:41 AM, Scott McClanahan
<[EMAIL PROTECTED]> wrote:
> Not specific to CentOS but I know you guys would be really helpful anyhow.
> Basically, I have a file which has been editted in the past very similarly
> to the hosts file only now I want to use it as a hosts file and n
Not specific to CentOS but I know you guys would be really helpful
anyhow. Basically, I have a file which has been editted in the past
very similarly to the hosts file only now I want to use it as a hosts
file and need to run some fancy sed to massage the data into shape.
Currently, the data in th
31 matches
Mail list logo
