Sed on Solaris doesn't support -i - that's far too modern! Come to think of it, I don't think any / many UNIX's support it. And --help doesn't work either.
Perhaps you could use the original solution, but use cp instead of mv:
(the file will retain its inode number and permissions, unlike with mv)
what does this command do ? as in
does this command just make sure everything in the file is executed?
or does it flush the file?
Actually this is used on a file in a progress database but I believe it is a unix command? (2 Replies)
I have AIX5.1
I have been trying to learn how to truncate the /var/adm/wtmp file.
I have seen several things on google actually but don't quite understand. I also searched your forums but couldn't find it.
one says this ">/var/adm/wtmp
Is that all I do?
I have a seperate question also. I was... (1 Reply)
Hello everybody it's me again.
I have a procces that is writing in a 'file1' automatically but i want to truncate 'file1' to a filesize 'x' that mean if the 'file1' size is 'x' i want to delete the first lines while the last lines are being writed, that have sence?
in the process are an... (1 Reply)
I have one file which first line is blank and second line has some data.
$cat filename
output:
30-MAY-07
I want to store 30-MAY-07 value in one variable.
for that I wrote
var="`head -2 filename`"
It will give that result but I want to truncate the first line which is blank.
plz help. (2 Replies)
I have a file in which I need to truncate 15th field to have only one character
like Put --> P
and if i have no value in 15th field, it should be "O" (Other)
would really appreciate the reponses, thnx in advance:b: (2 Replies)
Hi there:)
Because of security requirements, It would be much better if I could truncate my logs in place using sed -i (or ?). I cant use the -i option on sed in my environment.
Can anyone help a DBA? (5 Replies)
I am using FC6 just in case it matters, though i hope it doesn't.
If i have a file or some files that i want to truncate the filename of, so that it is only a certain number of characters in length, how would i do that on the command line?
Also, just to make it more interesting, say i... (11 Replies)
Hi
In unix able to connect to oracle database and create table ,when rerun ,if table exist ,truncate that table.Any idea how to do that
a.sh
----
sqlplus -s datadmin/password <<EOF
create table xx(col1 number,
col2...
);
exit;
EOF
I... (1 Reply)
Hi,
Does anyone have a script to truncate the wtmp file.
I want to move older entries in the wtmp to a new file and move it out of var/adm and shrink the size. (4 Replies)
Redirecting log files to null writing junk into log files.
i have log files which created from below command
exec <processname> >$logfile
but when it reaches some size i am redirecting to null while process is running like
>$logfile
manually but after that it writes some junk into... (7 Replies)
Discussion started by: greenworld123
7 Replies
LEARN ABOUT CENTOS
wtmpx
utmpx(4) File Formats utmpx(4)NAME
utmpx, wtmpx - utmpx and wtmpx database entry formats
SYNOPSIS
#include <utmpx.h>
/var/adm/utmpx
/var/adm/wtmpx
DESCRIPTION
The utmpx and wtmpx files are extended database files that have superseded the obsolete utmp and wtmp database files.
The utmpx database contains user access and accounting information for commands such as who(1), write(1), and login(1). The wtmpx database
contains the history of user access and accounting information for the utmpx database.
USAGE
Applications should not access these databases directly, but should use the functions described on the getutxent(3C) manual page to inter-
act with the utmpx and wtmpx databases to ensure that they are maintained consistently.
FILES
/var/adm/utmpx user access and adminstration information
/var/adm/wtmpx history of user access and adminstrative information
SEE ALSO getutxent(3C), wait(3C)wait.h(3HEAD)SunOS 5.10 22 Feb 1999 utmpx(4)