The substr() function takes 3 arguments, the string, offset (position, start from 0), and length. For example, substr("Hello", 1, 2) will return the string "el". The details can be obtained from the man page "man perlfunc".
Hi All ,
I'm trying to do a simple math expression ...but unsuccessfull :-(
Anyone can help me?
days=23
amount=`expr ${days} / 30 \* -125`
echo $amount
but as result i got 0 when i expect 95.833333
Another question...how i can limit only to two or three decimal fields?
Thanks in... (1 Reply)
Hi all,
Just a little question relative to signals.
I know that if an application is in the sleep state, When a signal is catched, it will be processed by the handler. But what happens if it's processing something? Does the processing stops??
The following code should illustrate this case
... (2 Replies)
Hi All,
When i have run the below command its showing 90% which is critical for production. for this i need the answer of some below question please help me for that.
1) i want to delete some unwanted files. how can i know the unwanted files ?Is it there any way of knowing this??
2)and... (2 Replies)
awk "/^<Mar 31, 2012 : /,0" /app/blah.log
can someone please help me figure out why the above command isn't pulling anything out from the log?
basically, i want it to pull out all records, from the very first line that starts with the date "Mar 31, 2012" and that also has a time immediately... (4 Replies)
If I run a script called 'abc.sh' and then execute the following :
ps -ef | grep 'abc.sh'
I always get two rows of output, one for the executing script, and the other for the grep command that I have triggered after the pipe.
Questions: Why does the second row turn up in the results. My... (10 Replies)
awk -F ";" 'FNR==NR{a=$1;next} ($2 in a)' server.list datafile | while read line
do
echo ${line}
done
when i run the above, i get this:
1 SERVICE NOTIFICATION: nagiosadmin skysmart-01.sky.net ....
instead of:
SERVICE NOTIFICATION: nagiosadmin skysmart-01.sky.net ....
can... (4 Replies)
I have a number, say 174. I need to write bash code that will find the first larger number that ends in 99. That would be 199 in this case. If the number were 1263, I would be looking for 1299, for 175438, I would want 175499, etc.
If the numbers were always three digit, I could just grab the... (11 Replies)
We have huge file with control A as delimiter. Somehow one record is corrupted. This time i figured it out using ETL graph. If future , how to print only bad record.
Example Correct record:... (2 Replies)
Can such Puzzle solve through UNIX script? if yes, what could be the code?
This has been solve in C language. we were trying to solve this through shell but could not because of not able to pass 1st argument with multiple value. we are not expert in unix scripting. Below is the puzzle
John is a... (4 Replies)