Not able to store command inside a shell variable, and run the variable
Hi,
I am trying to do the following thing
Above command substitutes date for and in turn runs the date command and i am getting the todays date value.
I am trying to do the same thing as following, but facing some problems,
I have stored the sed command in unique_host_pro variable and going to use the variable in multiple places of my script, so i dont have to use the command in multiple places, and also trying to avoid updates to the command in multiple places.
once assigning the above value, i am trying to run the command using
Getting the following exception
Please let me know how to correct this error also let me know if the approach is correct.
Last edited by radoulov; 11-19-2010 at 06:07 AM..
Reason: Use code tags, please!
I have the results of a grep with -n store in a shell variable
ie
VAR=`grep -n -e 'PATTERN' file`
How ever I am missing the line breaks in the variable , How do I store the resualts of grep with many lines in to a variables. I want the varable should be the sawmway as we do the grep
grep... (3 Replies)
Hi all..
I got a problem..
Its easy to redirect o/p to a file.. But Is it possible to redirect the O/P to a variable?
For example:
I've a command in my script:
string1=cut -d ':' -f2 file.txt
When I do:
echo $string1
The value is empty... Pls suggest me how to store the value... (7 Replies)
I have a variable A
echo $A
5060
I am exporting the value X,Y,Z and it id fetching right thing and When I run
C=`${X} -l ${Y} ${Z} "trap '' INT;. ~/.profile >/dev/null 2>/dev/null; netstat -na | grep \$A`"
here it is going to same directory and also running netstat -na | grep 5060
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I want to do a very simple operation within my script.
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Hello Experts
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Hi
How to use a variable to store the filename of a file which was found by the 'find' command.
can this be practical-->var = find . -name "filename.dat"
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Hello All
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I want to check whether the file has header or not
The header will contain the string
DATA_ACQ_CYC_CNTL_ID
So I am running the command
head -1 $i | grep DATA_ACQ_CYC_CNTL_ID
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Is it possible to store a command inside a variable?
i want this piece to be stored inside a variable, so i can use it later in a different command
$u | cut -d " " -f 2
var="$u | cut -d " " -f 2"
eval $var
I tried to use eval but I receive this error:
-f 2: command not found
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