Using sed (or similar) to rename variable headings
Hello,
I'm rather new to the world of regular expressions and sed, though am excited by its possibilities. I have a particular task I'd like to achieve, and have googled the topic quite a bit. However, having found some codes that perform a task very similar to what I'd like to do, I can't for the life of me fathom how to adapt them. So I figured I'd try asking someone with a bit more experience.
Basically I have a dataset in a text file and I want to change the variable headings.
Currently they read:
Code:
p_1 p_2 p_3 ... p_19
and I'd like to change them to:
Code:
P[,1] P[,2] P[,3] ... P[,19]
Is this something that can be done using sed?
Thanks awfully!
I have many text file reports generated by a Information Assurance tool that I need to get into a .CSV format or Excel tab delimited format. I want to use sed or awk to grab all the information in the sample text file below and create column headings:Risk ID, Risk Level, Category, Description, How... (5 Replies)
I'm trying to see if there's a way to see column headings when I type the
ls -l command.
I know what some of the fields mean for example in the following listing:
total 136
drwxr-xr-x 2 root root 4096 Jun 5 15:16 bin
drwxr-xr-x 3 root root 4096 Jul 9 15:25 boot
drwxr-xr-x 9... (6 Replies)
I have a log file that for some reason, once or two time a month, line foods are missing.
This log is generated from vmstat everyminute. I dont know why sometimes it does this.
Each line in the log should have 18 columns separated by one or more spaces.
Good Log: (not actual log)
1 1... (8 Replies)
HI I am executing faloowing commands.
mr batch_1 > my_temp.txt ;
mr batch_2 >>my_temp.txt;
mr batch_3 >> my_temp.txt;
mr batch_4 >> my_temp.txt;
and the out put file is as this
cat my_temp.txt
Machine Name Max Load Current Load Factor O/S Status... (3 Replies)
I want to match the number exactly from the variable which has multiple numbers seperated by pipe symbol similar to search in egrep.below is the code which i tried
#!/usr/bin/perl
my $searchnum = $ARGV;
my $num = "148|1|0|256";
print $num;
if ($searchnum =~ /$num/)
{
print "found";
}... (2 Replies)
Hi,
I have file in my $datadir as below :-
SAT_1.txt
SAT_2.txt
BAT_UD.lst
BAT_DD1.lst
DUTT_1.txt
DUTT_la.txt
Expected result :-
should get all the above file in $<Filename>_file.lst
Below is my code :-
for i in SAT BAT DUTT
do
touch a.lst
cd $datadir (1 Reply)
{
"AFafa": "FAFA","AFafa": "FAFA"
"baseball":"soccer","wrestling":"dancing"
"rhinos":"crocodiles","roles":"foodchain"
}
I need to insert a new line before the closing brackets "}" so that the final output looks like this:
{
"AFafa": "FAFA","AFafa": "FAFA"... (6 Replies)
Regularly we have questions like: i have an XML (C, C++, ...) file with this or that property and i want to extract the content of this or that tag (function, ...). How do i do it in sed?
Yes, in some (very limited) cases this is possible, but in general this can't be done. That is: you can do... (0 Replies)
All,
I'm getting a list like the following and I'd like to kill each PID in turn.
pid (17797)
pid (21748)
pid (21754)
pid (21704)
pid (2199)
pid (2159)
pid (17809)
pid (21769)
pid (21778)
pid (21715)
... (3 Replies)
I am using a same printer vendor for 2 printer. Some of them dont have just default name with a full name of that printer.
for example
# lpstat -a | awk '{print $1}'|grep CITIZEN
CITIZEN
CITIZEN-T-S851II
This first one CITIZEN is a part of script
if grep -q S310II /etc/cups/printers.conf;... (10 Replies)
Discussion started by: tomislav91
10 Replies
LEARN ABOUT DEBIAN
iv_task
iv_task(3) ivykis programmer's manual iv_task(3)NAME
iv_task_register, iv_task_unregister, iv_task_registered - deal with ivykis tasks
SYNOPSIS
#include <iv.h>
struct iv_task {
void *cookie;
void (*handler)(void *);
};
void IV_TASK_INIT(struct iv_task *task);
void iv_task_register(struct iv_task *task);
void iv_task_unregister(struct iv_task *task);
int iv_task_registered(struct iv_task *task);
DESCRIPTION
The functions iv_task_register and iv_task_unregister register, respectively unregister, a task with the current thread's ivykis event
loop. iv_task_registered on a task returns true if that task is currently registered with ivykis.
A task is like a timer, but with an immediate timeout. When a task is registered, unless it is unregistered again first, the callback
function specified by ->handler is guaranteed to be called once, in the thread that the task was registered in, some time after control
returns to the ivykis main loop but before ivykis will sleep for more events, with ->cookie as its first and sole argument. When this hap-
pens, the task is transparently unregistered.
Tasks are mainly used for scheduling code for execution where it is not appropriate to directly run that code in the calling context (for
example, because the current context might be run as a callback function where the caller expects certain conditions to remain invariant
after the callback completes).
The application is allowed to change the ->cookie and ->handler members at any time.
A given struct iv_task can only be registered in one thread at a time, and a task can only be unregistered in the thread that it was regis-
tered from.
There is no limit on the number of tasks registered at once.
See iv_examples(3) for programming examples.
SEE ALSO ivykis(3), iv_examples(3)ivykis 2010-08-15 iv_task(3)