|
|
Sponsored Content
Top Forums
Shell Programming and Scripting
How to store the return value of a command into a variable?
Post 302569509 by navienavnav on Monday 31st of October 2011 02:07:54 PM
10-31-2011
|
|
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
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)
Discussion started by: smartbuddy
7 Replies
2. Shell Programming and Scripting
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} ${Z} "trap '' INT;. ~/.profile >/dev/null 2>/dev/null; netstat -na | grep \$A`"
here it is going to same directory and also running netstat -na | grep 5060
... (4 Replies)
Discussion started by: madhusmita
4 Replies
3. Shell Programming and Scripting
I want to instert Category:XXXXX into the 2. line
something like this should work, but I have somewhere the wrong sytanx. something with the linebreak goes wrong:
sed "2i\\${n}Category:$cat\n"
Sample:
Titel Blahh Blahh abllk sdhsd sjdhf
Blahh Blah Blahh
Blahh
Should look like... (2 Replies)
Discussion started by: lowmaster
2 Replies
4. Shell Programming and Scripting
I am sure it has been answered in some form or the other in this forum but trust me I have spent last couple of hours looking for an answer but can't find it.
I want to do a very simple operation within my script.
Let's say I have 4 files with the names file1.log, file2.log, file3.log and... (6 Replies)
Discussion started by: sssccc
6 Replies
5. Shell Programming and Scripting
Hi,
I am trying to do the following thing
var='date'
$var
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,
unique_host_pro="sed -e ' /#/d'... (3 Replies)
Discussion started by: gvinayagam
3 Replies
6. Shell Programming and Scripting
Hello Experts
I am newbie to unix and writing one script to make archive files
Problme i am facing is : I have used find command to find the type of files and I am storing find command results in a variable.
When I echo the variable I can see that path is printed properly but when i am... (5 Replies)
Discussion started by: mitsyjohn
5 Replies
7. Shell Programming and Scripting
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"
Please help.. (1 Reply)
Discussion started by: ayyappaas
1 Replies
8. Shell Programming and Scripting
I wrote this script
#!/bin/bash
var=`du -sch /var/log/messages;du -sch /var/log/maillog`
echo $var
I am getting result as follows.
# sh my.sh
2.1M /var/log/messages 2.1M total 296K /var/log/maillog 296K total
I need it like below
2.1M /var/log/messages
296K... (3 Replies)
Discussion started by: anilcliff
3 Replies
9. Shell Programming and Scripting
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
... (5 Replies)
Discussion started by: velos
5 Replies
10. Programming
I am trying to store output of python command in variable. Could you please help how I can do that ?
For example I am executing the following command - "CentOS" in server_desc
The output would be True or False
I would like to store the output in a variable say outPut and use condition... (4 Replies)
Discussion started by: atanubanerji
4 Replies
LEARN ABOUT HPUX
fdiml
fdim(3M) fdim(3M) NAME
fdim(), fdimf(), fdiml(), fdimw(), fdimq() - positive difference functions SYNOPSIS
HP Integrity Server Only DESCRIPTION
The function determines the positive difference between its arguments. Integrity Server Only is a version of it takes arguments and returns a result. is a version of it takes arguments and returns a result. is an version of it takes arguments and returns an result. is equivalent to on HP-UX systems. USAGE
To use this function, compile either with the default option or with the and options. To use (for Integrity servers) or compile with the option. Make sure your program includes Link in the math library by specifying on the compiler or linker command line. RETURN VALUE
The function returns the positive difference between x and y. If x y, returns x y (and raises any exceptions resulting from the subtraction). If x y, returns +zero. If x or y is NaN, returns NaN. If both arguments are NaNs, returns NaN. returns a positively signed infinity in lieu of a value whose magnitude is too large, and raises the overflow and inexact exceptions. ERRORS
No errors are defined. SEE ALSO
fdim(3M), fmin(3M), math(5). STANDARDS CONFORMANCE
: ISO/IEC C99 (including Annex F, ``IEC 60559 floating-point arithmetic'') fdim(3M)