General :: Sed: Assigning Its Output To A Variable?
Feb 3, 2011Kernel 2.6.21.5, GNU/Linux (Slackware 12.0).In this script,
Code:
semoi@darkstar:~$ cat rename4.sh
#!/bin/bash
INPUT="k3b_audio_0_04"
[code]...
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General :: Assigning "find" Operation Output To A Variable?
Jan 7, 2011I am assigning "find" operation output to a variable. I also need to have error info / stderr if nothing is found in the same variable itself.
e.g.
a=`find . -name "hello.txt" -type f`
I do not want any temp files to be in between infact, redirection.
General :: Assigning Value To A Variable In Shell Script?
Nov 22, 2010Why doesn't "var1=`echo $var2 | grep pattern`" work ?
View 8 Replies View RelatedGeneral :: Assigning Query Result Into A Variable/file?
May 25, 2011I am connecting to MySQL DataBase using shellscript and writing a select statement like select attachmentid from attachments where pageid=10175 I want to store the output of the select statement into a shellvariable or a file. How can i do it using shellscript.
View 4 Replies View RelatedProgramming :: Assigning Variable Is Messing Up?
Nov 5, 2010I am trying to run this and was into issues
function() {
node=echo "10.11.12.13" | awk '{split ($0, a, "."); print a[1]}'
}
[code]....
Programming :: Assigning A Variable For Later Use In Shell Script ?
May 4, 2010Using things like awk/sed, but have managed to cobble together what I needed so far without a problem. The only thing I'm struggling with is to assign the content of a particular line as a variable, and then to use it again throughout the file.
For example, if what I want is the first line of the file to become the variable "from1", and then to replace the word "Subject" in the file with the string "Message from [from1]". What I thought would work
I tried a few diff combinations but nothing seems to work. All I get is the terminal hanging indefinitely.
Programming :: Assigning Bash Variable With The System Command In Awk?
Mar 1, 2011I am having all sorts of trouble trying to assign a variable within an awk script with the system command. I know there is a lot of ways around this problem, but for efficiency reasons, I would like to, within my awk script, do something like
system(x=3)
or
system(x=NR)
and, latter on the shell script which calls the awk script, use the variable $x. But nothing is passed to x. I have already tried things like
command = "x=3"
system(command)
and also used a pipeline within the system to pipe it to /bin/sh In fact tried a lot of stuff like that, using $(( )) etc etc etc I can create directories e write to files (yes, i could write to a file and read from there, but I dont think it is efficient, plus I am puzzled).
Programming :: Assigning Structure Object's Variable Outside Main() Gives Parse Error
Sep 2, 2010Kindly take a look at the code below :
Code:
#include <stdio.h>
struct test
{
int i;
int j;
[Code]....
why i am getting this error. I know the error is occuring because i have assigned values to obj.i and obj.j outside main(). But i want to know why do that result in an error. From my part i have created an object 'obj' of stucture 'test' and assigned values to its variables.
Programming :: Assigning Output Of A Command To An Array In Perl?
Nov 25, 2010I am trying to execute a Unix Command in perl and assigning its output to an array:
Code:
@File_List=exec("ls -1 /tmp");
but it is not working. I have tried the perl function system() also but its return code is
[code]...
General :: Any Way To Store Output Of Command Into Variable?
Mar 3, 2010I tried using the tail command in my shell script and storing that value in a variable a but an error keeps coming. Is there any other way to store the output of a command into a variable. Cannot Read text from text file and store it in a variable using shell script. The thing is I need a number from the file new.txt and use that number in my script
#!/bin/bash
a = `tail -1 new.txt|head -n 1`
echo $a
General :: Assign A Variable To The Output Value Of A Program?
Feb 6, 2011so i wrote myself a very simple hellworld program in c++
...the usual stuff
int main()
{
[code]...
General :: Need To Store Output Of Bitset() In A Variable / Possible In C++?
Mar 5, 2010I need to store the output of bitset() in a variable ... is it possible in c++?
View 1 Replies View RelatedGeneral :: Can't Save Grep Output Into Variable / Solution For This?
Feb 3, 2010I would like to grep two numbers out of a text file, and divide them.
Here is the script code...
It feels like grep saves a new line too? or what is happening? i simply can't divide them, as it handles the variables as they are empty (and prints the two numbers although they were not printed
General :: Does The Output Of The Previous Command Get Stored In Any Variable
Mar 26, 2011For example, when using bash you can use
Code:
to execute the previous command or
Code:
!<number> to execute the Nth command(use history to see the list). Or you can use
Code:
cd !-2:1
to cd into the value in the first field that was executed 2 commands ago Anyhow, say I run a command and the output is a path. Any way to cd and then some variable where OUTPUT of the previous command was stored? A variable that always stores the OUTPUT of the last command.
General :: Storing A Variable In A Shell Script After Awk Output?
Feb 8, 2010On command line I have no problem storing a variable e.g
Code:
:~/bin$ process=`ps -ef | awk ' $8 == "idesk" { print $2 }'`
:~/bin$ echo $process
26736
:~/bin$
When I try to incorporate this into a shell script I get a blank.
Code:
:~/bin$ cat process_idesk
#!/bin/bash
process=`ps -ef | awk ' $8 == "idesk" { print $2 }'`
[code]....
The process_idesk script has been chmoded to be executable by the user. I'm sure there must be a silly omission on my behalf.
General :: Count The Number Of Lines Inside A File And Put The Output Into A Variable?
Feb 1, 2011i need to count the number of files and put the output into a variable. i used wc -l filename but i couldnt find an option to put the output to variable. example if the number o line is 5, i need the output of echo $x is 5.
View 3 Replies View RelatedGeneral :: Create A Single Line Of Output From Multiple Variable Lines Of Input
Feb 3, 2010I need to create a single line of output from multiple and variable lines of input in a Linux bash shell script.
My input file looks like this:
Where there may be any number of umsecondaryphonenumber lines; if there is not a umsecondaryphonenumber line for a telephonenumber, I don't want to write any output.
So, the output file should look like:
The script I have so far is:
My question is - how do print each of the elements of an array in one record - i.e. what do I put in place of howdoiprintarray?
Programming :: Piping Cat Output To Variable?
Jan 10, 2010New to ubuntu and shell scripting in general... currently I stored some data into a text file. Right now, I would like to output the data from the text file and store it into a variable. Here's what I have so far:
READ_FILE=$(cat $FILE_NAME)
This definitely works and READ_FILE has the necessary data. However, this command will trigger an output to std output and I will see data on the screen, which is not what I want. I tried:
cat $FILE_NAME | $READ_FILE
and various other variants of this. It does not output to std output but neither does anything gets stored into $READ_FILE. I tried:
cat $FILE_NAME >> $READ_FILE
and it arrived at an error of "ambiguous redirect".
Ubuntu :: C++ - Can't Pass System Output To Variable ?
Sep 8, 2010I have a line that looks something like this:
Code:
How do i put its output in a variable?
Programming :: Retain The Eol In Bash Variable Or Ssh Output?
Jan 17, 2011I have to save the result of ssh/grep into a file to keep the eol ("/n"):
ssh $SSH_OPTIONS $USER@$NODE "cd $LOG_DIR; grep -h '$pattern' log.*" > $file
So that when I grep on the local file again later, it can be printed out with original log lines. Otherwise, the log lines will be dropped and lines becomes concatenated into a single line, e.g., if I rewrite the script in this way, echoing the $result is not a good idea..
result=`ssh $SSH_OPTIONS $USER@$NODES "cd $LOG_DIR; grep -h '$pattern' log.*"`
is there some workaround that I can save it to a variable rather than file but still keep the eol? That will simplify my script and don't need to do all those I/Os!
Programming :: Java Output Into Bash Variable?
Feb 20, 2011I have a bash script that calls a java class method. The method returns a string to the linux console when run independently. how can I assign the value from the java method to a variable in a bash script?running the script: java -cp /opt/my_dir/class.method [parameter]
output: my_string if added in a bash script:
read parameter
java -cp /opt/my_dir/class.method [parameter] | read the_output
echo $the_output
the above doesnt work, I also tried unsuccessfully:
the_output=java -cp /opt/my_dir/class.method [parameter]
the_output=`java -cp /opt/my_dir/class.method [parameter]`
java -cp /opt/my_dir/class.method [parameter] 2>&1
How can i get the output stored into the_output variable?
Ubuntu :: Cannot Pipe Gdialog Output To Variable / Sort It?
Mar 20, 2010I'm trying to use the output from gdialog's input box in another command with no success. code...
View 3 Replies View RelatedProgramming :: Receive Command Output And Store It To A Variable?
Apr 3, 2010Suppose I want to account number of files beginning with abc , I can use "ls 'abc* | grep abc | wc -l", this will return me a number.
I want to store this number in a variable, say var1, so I tried
1. "ls 'abc* | grep abc | wc -l |read var1", but this didn't work as var1 has no value somehow.
2. var1='ls 'abc* | grep abc | wc -l', this just assign the entire string "ls 'abc* | grep abc | wc -l" to var1, which is not I wanted.
I don't want to store the value to a temporary file and then read the value from that file. I think there should be a direct way to get the value, but don't know how. I know in tcsh, one can just use set var1='ls 'abc* | grep abc | wc -l', but it also doesn't work in bash. Can anyone give any clue about this?
Programming :: Python : Pass Output Of System Commands To Variable?
Jan 25, 2011I'm trying to write a python script that will use the current user's name when interacting. Ex: when started, it should say "hello daweefolk" when I am logged in.
I've tried
Code:
username=os.system("echo $USER")
but the variable remains empty.
What is the correct code?
General :: Assign Local Variable Values To Global Variable?
Feb 17, 2011how to assign a local variable value to a global variable....
View 2 Replies View RelatedProgramming :: Storing Grep Output To Feed Awk To Retrieve Entire Records Matching Variable
Jul 28, 2010I have two files :
FileA
prot1
prot5
prot9
prot15
[Code]....
What I need to do is to extract from fileB the fields containing only the strings in fileA.
I thought awk could do the job easily with :
Code:
awk 'BEGIN { RS = "###" } /'$variable'/' fileB > output
where variable would maybe be the output of grep from fileA. So can I store the output of grep in a variable to use it afterwards with awk ?
something like that:
Code:
result=`grep prot. fileA` ; awk 'BEGIN { RS = "###" } /'$result'/' fileB > output
but that doesn't work. I'm always getting the entire fileB.
The output of grep get stored in the variable, I verified that with echo. So there is something that I just don't get... It seems to me that the above line should work.
General :: Create An Environment Variable With The PRINTER Variable?
Apr 16, 2011I am supposed to create an environment variable with the PRINTER variable, which should resolve to the word sales. Would the command be like this?: env PRINTER - NAME=SALES (is this the command to create that variable with resolving the word sales to it?)
View 3 Replies View RelatedDebian Multimedia :: Conky Execp / Execpi To Parse Output Of Scroll Variable Generated From Shell Or PHP Scripts
Sep 11, 2015I am having a hard time getting conky execp/execpi to correctly parse output of the scroll variable generated from shell or PHP scripts.
Code: Select allDebian 8.0
Xfce 4.10
Conky 1.9.0-6
This is a simplified minimal conky configuration file used to show the same problem:
Code: Select allalignment bottom_middle
background no
border_width 1
default_color white
default_outline_color white
default_shade_color white
double_buffer yes
[Code] ....
Here is the output I'm getting:
Code: Select all ABC /*doesn't scroll, UNEXPECTED, shows 10 spaces before ABC*/
ABC --||--
abcdefghijklmnopABC /*doesn't scroll, WORKS AS EXPECTED as scroll length is 25 which is longer than text "abcdefghijklmnop" */
abcdefghijklmnopABC --||--
abcdefghijklmnopABC /*WORKS, everything before ABC scrolls 5 characters at a time*/
General :: RHEL5 Not Assigning Partition For Usb Key
Dec 16, 2010I'm trying to mount a USB key in a RHEL5 box to upload some file. I found doc online and followed it and mounted it fine the first time. Then I unplugged it and found that I have another file to upload so I plugged it back in. However this time it's not assigned a partition (last time was sdb1) and I can't mount it anymore. I think the USB key is recognized and the driver is installed properly:
[code]....
General :: Assigning Admin Rights To Apps?
Sep 30, 2010I am using linux mint and have installed Netbeans on it but whenever I run netbeans from accounts other than root it throws an error for not having permission to start glassfish server of netbeans. I also tried running this application using run as administrator option but then the application does not start.
So is there a way to assign netbeans admin rights permanently so that whenever I start this application from other accounts I should not face this error?