so i have been trying to learn how to manipulate text on my own and have gotten stumped...
let's say i have a text file that says (highly simplified):
people ordinary
How would swap the order of the words..
I know i need to use sed and some kind of back reference but cannot make it... (2 Replies)
If I have string { I_love_shell_scripts}
anyone knows how to have output {stpircs_llehs_evol_I}
by using shell and perl ?I know in perl, there is reverse() funcation, but
can it be done by not using reverse()? (3 Replies)
I have a text
"abc def ghi"
and I want to get it as
"def abc ghi"
I am using this
echo "abc def ghi" | sed 's/\(*\)\(*\)/\2\1/'
But I am not able to get the output, could anyone help me.
Thanks (9 Replies)
I have files in a folder like ..
citi11082006_1.trn
citi11082006_2.trn
citi11082006_3.trn
...
...
...
citi11082006_13.trn
.,...
citi11082006_nn.trn
Each file will have one string inside and I am builting a master string based out the string in the sub files by merging all into one by... (6 Replies)
Im trying to develop a shell script that will change the content order of the file.
For example I have a file that says
a
b
c
d
I want to change this to be
d
c
b
a
Im trying to use sed to this by reading the file and then inserting each line at the top
#!/usr/bin/ksh
... (3 Replies)
Hi ,
I want to change the order of a string using sed command . Is it possible ?
$echo "abc123xyz" | sed 's/\()*\) \(*\)/\2\1/'
abc123xyz
$ echo "abc123xyz" |sed 's/\()*\) \(*\) \()*\)/\2\1\3/'
abc123xyz
I want to change the string ,
abc123xyz as
xyz123abc .
Is it... (5 Replies)
Hi -
I have a file with lots of lines in that I need to order based on the number of commas!
e.g the file looks something like :-
cn=john,cn=users,cn=uk,dc=dot,dc=com
cn=john,cn=users,dc=com
cn=users,cn=groups,dc=com
cn=john,cn=admins,cn=users,cn=uk,dc=dot,dc=com... (4 Replies)
here is what i want to achieve... consider a file contains below contents. the file size is large about 60mb
cat dump.sql
INSERT INTO `table1` (`id`, `action`, `date`, `descrip`, `lastModified`) VALUES (1,'Change','2011-05-05 00:00:00','Account Updated','2012-02-10... (10 Replies)
Hello.
I would like to write a bash function which would return "true" if the search succeed else return anything else.
something like
if ] ; then
exit 1
fi
function my_funct () {
find first occurrence $2 in $1
if not found return "false"
from that position,... (6 Replies)
Discussion started by: jcdole
6 Replies
LEARN ABOUT CENTOS
pmdasystemtap
PMDASYSTEMTAP(1) Performance Co-Pilot PMDASYSTEMTAP(1)NAME
pmdasystemtap - Systemtap performance metrics domain agent (PMDA)
DESCRIPTION
pmdasystemtap is a Performance Metrics Domain Agent (PMDA) which exports metric values from the Linux Systemtap dynamic tracing toolkit.
This implementation uses the stap(1) tool, which is a front-end to the Systemtap toolkit.
INSTALLATION
In order to access performance data exported by Systemtap from with PCP, it is necessary to perform two configuration steps:
1. Configure Systemtap probes, and verify them with stap(1). These should be produced in a format that is easily parsed, and then stored
in the $PCP_PMDAS_DIR/systemtap/probes.stp file.
2. Configure pmdasystemtap to extract the values from the text produced by stap. Two example probes are implemented in the default
systemtap PMDA script - readdir and sync traces (see $PCP_PMDAS_DIR/systemtap/pmdasystemtap.pl for details).
# cd $PCP_PMDAS_DIR/systemtap
# [ edit probes.stp, test /usr/bin/stap probes.stp ]
# [ edit pmdasystemtap.pl ]
Once this is setup, you can access the names and values for the systemtap performance metrics by doing the following as root:
# cd $PCP_PMDAS_DIR/systemtap
# ./Install
If you want to undo the installation, do the following as root:
# cd $PCP_PMDAS_DIR/systemtap
# ./Remove
pmdasystemtap is launched by pmcd(1) and should never be executed directly. The Install and Remove scripts notify pmcd(1) when the agent
is installed or removed.
FILES
$PCP_PMDAS_DIR/systemtap/probes.stp
probe configuration file for stap(1), run by pmdasystemtap
$PCP_PMDAS_DIR/systemtap/Install
installation script for the pmdasystemtap agent
$PCP_PMDAS_DIR/systemtap/Remove
undo installation script for the pmdasystemtap agent
$PCP_LOG_DIR/pmcd/systemtap.log
default log file for error messages from pmdasystemtap
SEE ALSO pmcd(1) and stap(1).
3.8.10 Performance Co-Pilot PMDASYSTEMTAP(1)