Unix sed (not GNU sed) usually doesn't support extended regular expression and things like the "or" sequence in your sed sample. Sed DOES take multiple expressions portably, so you could do:
Depending on the replacement string and further patterns, you can introduce an overlap where a pattern is matched in a subsequent expression. No problem in this case above, but for your 4digit year pattern, if you keep that one, You'll have to do some extra work... (details left out for now).
Sorry for the duplicate thread this one is similar to the one in
https://www.unix.com/shell-programming-scripting/88132-awk-sed-script-read-values-parameter-files.html#post302255121
Since there were no responses on the parent thread since it got resolved partially i thought to open the new... (4 Replies)
Okay, title is kind of confusion, but basically, I have a lot of scripts on a server that I need to replace a ps command, however, the new ps command I'm trying to replace the current one with pipes to sed at one point. So now I am attempting to create another script that replaces that line.
... (1 Reply)
hi all,
attached you can find a small txt file ( .txt ),
GIVEN that past_scheduler="islip" and scheduler="mucf"
can somebody please tell me
WHY sed 's/-u '$past_scheduler'/-u '$scheduler'/g' .txt > .txt.temp fails ?
thanx (3 Replies)
Hello,
Can any perl experts help me convert my sed string to perl. I am unsuccessful with this.
I have to remove this string from html files OAS_AD('Top');
I have come up with this. However the requirement is in perl.
for find in $(find . -type f -name "file1.html") ; do cat $find |... (2 Replies)
I know this script is crummy, but I was just messing around.. how do I get sed's insert command to allow variable expansion to show the filename?
#!/bin/bash
filename=`echo $0`
/usr/bin/sed '/#include/ {
i\
the filename is `$filename`
}' $1
exit 0 (8 Replies)
Hi.....
I'm using sed command for replace the words in a file
cat >test.txt
My test.txt contains
Mary had a little ham
Mary fried a lot of spam
Jack ate a Spam sandwich
Jill had a lamb spamwich
Marry had a spicy wich
$ sed 's/wich$/mirchi/g' test.txt
output is:
Mary had a little ham... (24 Replies)
Hello All,
I have something like below
LDC100/rel/prod/libinactrl.a
LAA2000/rel/prod/libinactrl.a
I want to remove till first forward slash that is outputshould be as below
rel/prod/libinactrl.a
rel/prod/libinactrl.a
How can I do that ??? (8 Replies)
Hello,
I'm working with this command which I'm having trouble understanding it:
sed -e '1,$ s/SUB/N/g' < $1 > file.txt
Where SUB stand for an special character with code in ASCII is 0x1A, notepad read it as a right arrow.
Any help will be appreciated. (5 Replies)
Hi,
I am running a script sample.sh in bash environment .In the script i am using sed and awk commands which when executed individually from terminal they are getting executed normally but when i give these sed and awk commands in the script it is giving the below errors :-
./sample.sh: line... (12 Replies)
Hi All,
I'm relatively new to Unix scripting and am trying to get my head around piping.
I'm trying to take a header record from one file and prepend it to another file. I've done this by creating several temp files but i'm wondering if there is a cleaner way to do this.
I'm thinking... (10 Replies)
Discussion started by: BigCroyd
10 Replies
LEARN ABOUT REDHAT
overchan
OVERCHAN(8) System Manager's Manual OVERCHAN(8)NAME
overchan - update the news overview database
SYNOPSIS
overchan [ - | file ]
DESCRIPTION
Overchan reads article data from files or standard input if none are specified. (A single dash in the file list means to read standard
input.) It uses this information to update the news overview database. Overchan was originally designed to be used by InterNetNews or the
C News ``mkov'' packages to update the database as the articles come in. For current inn, the database is stored by overview method. This
can be done within innd(8) but, still overchan(8) can do this, if <useoverchan in inn.conf> is ``true'' and appropriate setup is done in
newsfeeds(5). file, for example:
overview!:*:Tc,WnteO:<pathbin in inn.conf>/overchan
This data consists of a line of text, separated into four parts by a space. The first part is a token for the article. The second part is
time when the article was received. The third part is time when the article will be expired(which represents Expires header.) The fourth
part is the data to be stored. The data in the overview files should be expired by running expireover(8). This is normally done by adding
the ``expireover'' flag to the news.daily(8) invocation.
HISTORY
Written by Rob Robertson <rob@violet.berkeley.edu> and Rich $alz <rsalz@uunet.uu.net> for InterNetNews. This is revision 1.9.2.1, dated
2000/08/17.
SEE ALSO expireover(8), inn.conf(5), news.daily(8), newsfeeds(5).
OVERCHAN(8)