Programming :: Using Sed To Modify Command Output?

Jun 13, 2010

The output of a command changed and I need to extract the data and print it out in a different fassion:

Code:
abcd1=aaaa xx
abcd 2 aaa xx bbb
abcd2=aaaa xy
ab 2 xx aaa bbb ccc xxx
should be transformed to:

[Code]...

Currently I used sed "search1|search2|search3" to get the lines that need to be transformed. But I also need to search for substrings in those lines and I need to print those substrings in a specific order together with other characters. How is this done with sed?

View 7 Replies


ADVERTISEMENT

General :: Modify The Output Of Df Command?

Mar 20, 2010

this is the output of df command on my system

Filesystem 1K-blocks Used Available Use% Mounted on
/dev/sda8 18073924 4911628 12244184 29% /
udev 642140 308 641832 1% /dev

[code]....

View 14 Replies View Related

Programming :: Modify Output Of Shell Script

Dec 3, 2010

I'm running RHEL5.5 and nagios 3.2.0. The real question deals with how to change the printed output so nagios will work with it.I have made a script that will calculate network throughput on interfaces. The script is going through and finding all interfaces (eth, bond, lan) and doing the math to calculate throughput.The output is mainly for nagios to report and trend the values. As nagios wants to see nothing but perf data after the '|' character, I somehow need to have only one '|' character for all of the output.

View 2 Replies View Related

Programming :: Show The Output Of Shell Command Into A Textbox, Ex Ps -efc Command?

Oct 20, 2010

I am using gtk to program GUI. How can I show the output of shell command into a textbox, ex ps -efc command ?

View 3 Replies View Related

Programming :: Bash Ambiguous Redirect - Redirect One Command Output Which Will Be Treat As A Content Of File For Another Command?

Mar 9, 2011

I am trying to grep multiple numbers from file, grep does have the -f option for that.

Code: grep -f <`seq 500 520` /etc/passwd I know this could be done with

Code: for i in `seq 500 520`; do grep "$i" /etc/passwd; done But my question is fare more behind this example. It is possible to redirect one command output which will be treat as a content of file for another command ?

View 2 Replies View Related

Programming :: Echo Two Command Output In The Same Line?

Jan 25, 2011

I try to write script and echo two command at the same line .

echo "A"
echo "B"

How can I pipe above two command at the same line in text file . So, in the output text file , you can see below ? Code: A B not Code: A B

View 4 Replies View Related

Programming :: Diverting IDL Output To The Command Line?

Jul 14, 2010

I'm troubleshooting a batch of scripts I'm modifying, including an IDL script called by a .csh script. the IDL scripts were provided to me by a coworker and my .csh script is intended to automate a lengthy set of extremely tedious and time consuming processing tasks.

I am currently in the process of debugging, and can't get the IDL to print any messages other than critical failures to the screen. Is there any easy way to redirect the stdout to either a logfile or the screen?

View 2 Replies View Related

Programming :: Giving Output Of A Command As The Input To Another

Sep 7, 2010

While making a shell ,there is the following problem Im facing:

I am expecting the user to enter commands in the following format :

I am to separate these and the output of ls -l should be given as input to grep and the output of both to more.

But I am allowed (by our instructor) to use dup/dup2 or any other command(but not pipe or tees).

How to connect the file descriptors after successful execution of each command?

View 5 Replies View Related

Programming :: Get String From System Command Output ?

May 15, 2010

I have found this from a site [url]

Code:

But it does not work for me, segfault.

View 7 Replies View Related

Programming :: Store Output Of Command With Pipes?

Jan 20, 2011

I need to find one RUNNING word in latest created logs.
and as soon as i will get RUNNING WORD , i have to execute another Unix Command.

I wrote following script code...

View 3 Replies View Related

Programming :: Omit Specified Characters From The Output Of A Command?

Nov 18, 2010

After typing "man cut" in my terminal I can't seem to find this answer.

I am trying to write several shell scripts and want to remove the 'lp:<package name>' from the beginning of each line of the output of "bzr ls" as well as any notices at the beginning of the output, leaving only file and folder paths.

View 6 Replies View Related

Programming :: Using Bash Command To Execute Output Of Awk?

Mar 24, 2011

I am trying to process a column separated data file, with a few bash command. For example, I have

Code:

file1 aaaa yes
file2 aaaa no
file3 bbbb yes

Let say I want to create new file with the output of first column and do something else with the output of 3rd column. Of course there are many ways to process this data file, but I wish to know by using awk, how could I do it. I'm trying:

Code:

awk '{system("touch $1")}' datafile

but the shell command will not able to get the awk '$1' output. How do I get this done ? And for another question, if the data file contains the variable name of a shell variable, how could I make use of it during a awk output ? For example I have a datafile1:

Code:

server1 yes
server2 no

And in another server declaration data file, I got this datafile2:

Code:

server1=xxx1
server2=yyy1

And in my awk script, I want to achieve something like (the syntax is definitely wrong, just to demonstrate what I assume it will like):

[code]....

View 12 Replies View Related

Programming :: Assigning Output Of A Command To An Array In Perl?

Nov 25, 2010

I 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]...

View 10 Replies View Related

Programming :: Receive Command Output And Store It To A Variable?

Apr 3, 2010

Suppose 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?

View 5 Replies View Related

Programming :: Direct Standard Output From Find Command?

Mar 26, 2010

I'm trying to pull out sections from a bunch of files. For one file, I use:

Code:
sed '/string1/,/string2/ !d' <filename.ext >newfilename.ext
to pull out everything between two strings in the original file and put them in a new file.

[code]....

View 3 Replies View Related

Programming :: Organize Bash Script Output Of Which Is Like On Top Command

Sep 12, 2010

Is it possible to organize bash script output of which is like on top command i.e. monitoring every let's say 1 sec and old information would cleared?

View 3 Replies View Related

Programming :: Retrieving And Organizing Data From Command Output?

Mar 31, 2011

I was messing around with Bash scripting just now and was wondering if there was a way to organize the output of a command into an array. Like the Bash equivalent of the PHP explode() function.

View 3 Replies View Related

Programming :: Sort Command Output Differs When Encounters?

Mar 18, 2010

Here is what I am doing I have a file, a.txt for example, with following contents:

Code:
coreutils install
cpio install
cpp install
cpp-4.3 install
dbus install

[Code]...

So it seems like the sorting algo. for dpkg --get-selections is different than sorting algo. of 'sort' command when it encounters "-" (hyphen). How can I sort the original file (a.txt) in such a way that it produces the output file ,b.txt, exactly the same.

View 6 Replies View Related

Programming :: Reading Command Output By Line In Bourne Script?

Feb 13, 2010

I have a command which generates the following output:

Code:
$ sudo vnconfig -l
vnd0: not in use

[code]...

View 6 Replies View Related

Programming :: Creating Array From Command Output (Bash Shell Script)

Jan 26, 2011

I have a command that outputs n lines of text, and I want to place each line into an array element, but I can't seem to get the syntax correct

So my command is this:
cat $configfile | sed -n '/cluster:'$clustername'/,/cluster/ p' | awk /host/

Which produces many lines depending on the value of $clustername. I'd like to get each line as elements of an array.

View 5 Replies View Related

General :: Modify Loop Code (For And While) To Get Output Returned

Jul 20, 2010

Filename.txt

Code:
My First Line
My Second Line
::::While Loop:::
Program:

Code:
while read line
do
echo "$line"
done < Filename.txt
output:

Code:
My First Line
My Second Line

Is it possible to use for loop to get the same output. I have tried executing below code but I get every word of my file being displayed one below above.Is there any way I can modify the for loop code to get the output returned by while loop?

:::For Loop:::
Program:

Code:
for line in $(cat Filename.txt)
do
echo $line
done
output:

Code:
My
First
Line
My
Second
Line

View 8 Replies View Related

Programming :: Find Command With Standard Error Output And Mail Error File

Nov 11, 2010

We make everyday a DB Mysql backup on Linux redhat Enterprise. We are using a bash shell script (and putting it in the crontab) to execute it automatically everyday. We added a line to this script telling, once the backup has completed, to find old backup files (stored on hard disk after each backup) older than x days to remove them. We use the find command (search for file type) with the mtime option and in combination with rm command. Everything runs ok but we also want to add some new code to the same line: If find command cannot find anything or fails, for example if it cannot delete file or fails, send the error message (standard error output) to an error file (like error000001 and increasing) and mail the errorxxxx file to an email address for example to admin@companyname.com. What would be the code for this issue to add it to our find command in the same bash shell script??

View 2 Replies View Related

Programming :: Storing Output Of "time" Command To A Variable

Jan 21, 2011

In my script, I need to get execution time of a command (say 'ls') in mili seconds level. For this i tried using "time" command to retrieve the total execution time in milli seconds. But, the problem is that, how to save the output of time command in a variable. The format of the command is like "time ls -R /opt" Going further, the o/p of 'time' command is:

real 0m0.003s
user 0m0.004s
sys 0m0.000s

Here, in my script, I would like to use only middle line "user 0m0.004s" saved to the variable but unable to find out the way.

View 1 Replies View Related

Programming :: Send The Output Of A Command In A File Defined By A Eval $"$var1"?

Jul 7, 2010

Here is the block of code : (The red part is the code that doesn't work) The file is not created and see the output after the code. # i loop create environment structure and k loop create std procedure sub structure.

for i in TRAX2 TRAX BENCH PROD
do
eval mkdir $"acsayul02501_${i}"
eval chmod 2770 $"acsayul02501_${i}"

[code]....

View 3 Replies View Related

General :: How To Modify Rm Command

Jun 22, 2010

When we execute rm command then the target files or directories are permanently removed from our computer.

Is there any way my which when we execute rm command then the files or directories moved to Trash.

View 13 Replies View Related

General :: Command Syntax To Modify Multiple Files

Sep 26, 2009

I have a program I use, rrdtool. I need to modify a ds value on every file at the same time. However, using a wildcard (*) to try this operation of all files does not work and instead only updates one file.

Here is the command syntax:
rrdtool tune <file> --maximum traffic_in:100000000000 && rrdtool tune <file> --maximum traffic_out:100000000000
So, how can I do this on every file in the directory?

View 5 Replies View Related

General :: Append Command Output To File By Giving Command In Terminal?

Jul 3, 2009

I am using openSUSE 10.3.When I install software from tarball then to record time required I send output of date to beg.txt(when installation begins) and end.txt (when installation finishes).How can I append output of date to a file so I don't need two files?

View 4 Replies View Related

General :: Redirecting Command Output To Input Of Another Command?

Jul 2, 2011

I want to run gsettings list-schemas (which return a list of about 100 names separated by spaces)and somehow direct each name one at a time as the input to this command:gsettings list-recursivelyI've tried it with awk, and standard | piping and also as a string variable strvar=$(gsettings list-schemas) and using the $strvar as the input butam missing something in between I'm sure like for - while or proper syntax of awk etc

View 3 Replies View Related

General :: Use Output Of Previous Command As Parameter To Another Command?

Nov 13, 2010

I want to use the output of a previous command as a parameter to another command. For example: to know where "nice" is stored i typed: which nice output: /usr/bin/nice now the second command i typed is: ls -l /usr/bin/nice Is there a way to have a single command like: ls -l which nice ?

View 4 Replies View Related

Programming :: How To Modify System Kernel

Dec 7, 2010

For my work, I have to modify the routing lookup process at Linux kernel.

The details is below:

A-----B.

We have pcA, pcB (using Linux OS kernel 2.6.26.5) connect together. We need to modify the source code of kernel at B in order to if A sends the packets with destination IP address as C, pcB still receives this packet and send to transport layer (that means, it bypass the routing lookup process at kernel).

The solution I used as the following code...

View 12 Replies View Related







Copyrights 2005-15 www.BigResource.com, All rights reserved