I'm trying to change a date in a couple of large files using SED. The problem is when I use the -n parameter, it doesn't actually change the file. When I leave out the -n, it sends the whole file to the screen, but it does appear to change it.
The problem is, these files are very large and it would take forever to change it like that. I'm sure it is just an issue with my syntax, but here is what I was trying:
Code:
sed -n 's/20121201/20130101/g' filename
Should this update the existing file? If not, how can I do that?
Moderator's Comments:
Code tags please, see PM.
Last edited by zaxxon; 12-06-2012 at 05:08 PM..
Reason: code tags
I have a loop in a script that is given me an error but, when I do it on the command line it works perfectly. The sed statement has to use the variables from a file so the file is partitioned correctly. I am running on HP:
<Begin error>:
+ cat /u01/bteam/CNAM/1121/.partition
+ read line
+ +... (3 Replies)
Can anyone tell me ...on the below listed command
cat /mnt/winbox/list_measurement/ds1c/ds1_f.rome_27A03A 2>> error_log | sed -e '1,3d;s/^/27A03A,/' | sed -e "s#\(.*\)#\1 ,$(date +%Y-%m-%d)#g" > /SBS/ds1_f.rome_27A03A
The outcome is this:
,2005-08-29 Forestdale,3:02 am MON AUG 29,... (9 Replies)
Can someone help me "port" this to AIX sed?
sed '/nas/{n;s/true/false/}'
I know it doesn't like the ; but i don't know how else to do it.... never had to sed on an AIX box :D (7 Replies)
Hi All
I'm getting this error while executing a sed script
sed: 0602-404 Function /</ i\ File from New Cube: cannot be parsed.
sed "/</ i\ File from New Cube:
/>/ i\ File from Old Cube:" difference1.txt > Difference.txt
I've a file like this
< Y2008 Dec ..... .... ... 345
I want... (6 Replies)
Hello ,
I am trying to replace a word :: complete to Failed .
work: complete
Sed command which i am using is given below ::
sed s/work: complete/Failed/g temp1.txt > temp2.txt (Sed command is grabled if i use the above .. because of space which is there between work: and complete. I... (6 Replies)
Hi,
I am trying to use 3 sed statements in a shell script, but it get foll error.
sed : garbage after command.
If I use only two sed statements, the script works well.
Is there any restriction for sed usage or is there some catch which I am missing.
Sample Script is as follows :
... (3 Replies)
hi
i have following sed command
this replaces "** in filename1 with octal value 007 filename2
when i put it in script it wont work but it works from command line
my OS is sun OS
---------- Post updated at 06:38 PM ---------- Previous update was at 06:14 PM ----------
i... (10 Replies)
Hi guys. Can somone advise as to what the problem is with the following sed command?
1) read -p "Please enter new username you wish to replace old: " new_username
sed "s/$username/$new_username/" information_file
;;
This is one of the case statements included but I'm... (1 Reply)
I can't get this code to work, could I get some help...
sed -i '' "s:${shLogpath1}${cell}:${shLogpath2}${cell}:g" test.txt
Any Ideas, I think I need to separate the variables some how? (2 Replies)
Discussion started by: digitalviking
2 Replies
LEARN ABOUT DEBIAN
mod-active
MOD-ACTIVE(8) InterNetNews Documentation MOD-ACTIVE(8)NAME
mod-active - Batch processing of newsgroups creation and removal commands
SYNOPSIS
mod-active [ctlinnd-command-file ...]
DESCRIPTION
mod-active is a Perl script that updates the active file based on its input lines of ctlinnd "newgroup", "rmgroup" and "changegroup"
commands. It pauses the server briefly while the existing active file is read and rewritten, which not only keeps innd from updating the
active file but also locks against other instances of mod-active.
The script must be run as the news user.
The input to mod-active can come either from one or more ctlinnd-command-file files named on the command line, or from the standard input.
Typically its input is the output from the docheckgroups or actsync commands. Every line which contains the string "ctlinnd newgroup",
"ctlinnd rmgroup", or "ctlinnd changegroup", optionally preceded by whitespace and/or the path to ctlinnd, is noted for the update.
Redundant commands, such as a newgroup directive for a group that already exists, are silently ignored. All other lines in the input are
also silently ignored. After the new active file has been generated, the existing one is renamed to active.old and the new one is moved
into place. The script then displays the differences between the two files. Any groups that were added to the active file are also added
to the active.times file with the string "checkgroups-update".
Please note that no syntax checking is performed on group names by mod-active.
BUGS
Though innd is paused while mod-active works, it is not inconceivable that there could be a conflict if something else tries to update the
active file during the relatively short time that mod-active is working. The two most realistic ways for this to happen are either by an
administrator concurrently doing a manual ctlinnd command, or by innd receiving a control message, then mod-active pausing the server, then
the control message handler script that innd forked running its own ctlinnd command while mod-active is working. Note that such scenarios
are very unlikely to happen.
HISTORY
Written by David C Lawrence <tale@isc.org> for InterNetNews. Converted to POD by Julien Elie.
SEE ALSO active(5), active.times(5), actsync(8), ctlinnd(8), docheckgroups(8), innd(8).
INN 2.5.3 2011-06-10 MOD-ACTIVE(8)
12-06-2012
