Ubuntu :: General, How To Exec On Ls Results?

Feb 10, 2010

Find a file and need to do something to it, think there must be a single line solution for:

$ ls *.c
$ cat *.c

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General :: Saving The Results Of The Time Command While Discarding The Results Of The Command Being Timed

Apr 6, 2010

I'm timing how long it takes to run a command foo. I'm looking to append the results from the time command to a file, and discard the results from the foo command. I tried the following, but it didn't do what I want:

$ time ./foo > /dev/null >> output_from_time_command.txt

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General :: Using PHP Exec With Java

Feb 17, 2011

izzit possible to use a php exec function to trigger a jar file using -java method?ters/new.png"');However when I run the index.php, it doesn't trigger action.Instead when I run this code in the terminal, it works perfectly well.So is there any configuration needed to perform such action?Oh btw I'm using XAMPP in linux ubuntu and CBSim.jar to convert some images.

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General :: Exec Command With Grep Output?

Feb 15, 2011

I have a requirement to find the files having its name as ack_reply. However, there are many other files in the same directory as these resides. Now I have to remove these files from the folder and retain others after 7 days. So I tried to write the below script with grep command.

find $directory -type f -mtime +7 | grep ack_reply

how can I pass this output to -exec command.

If I am not using grep command my script would be as

find $directory -type f -mtime +7 -exec remove.sh {}\;;

How can I use -exec with grep and find.

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General :: Ssh Exec Command And Exit Session

Jan 13, 2011

is it possible to execute command and terminate session all in one phrase

something like this connect to server hostname and than execute command "ls" and than some command

ssh username"at"hostname ls "something"

without "something" this phrase connects to server and lists directory, I need something that after listing directory, terminates session.

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General :: Unmount The Partition With Exec Permissions?

Aug 9, 2010

My hosting company said: You need to unmount the partition with exec permissions, install memcached and re-mount it with no-exec as a security measure.


[root@server tmp]# pecl install memcache
WARNING: channel "pecl.php.net" has updated its protocols, use "pecl
channel-update pecl.php.net" to update


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General :: /usr/bin/xterm: Could Not Exec /bin/bash: Permission Denied

Sep 24, 2010

I'm in trouble when I log in the fedora as a normal user(not root) today. When I fill the username and the password press enter key. Then pop up a little window locate at top left corner. And have one line message : "/usr/bin/xterm : Could not exec /bin/bash : Permission Denied" Then I log in as root, it's ok. And when I open shell and type "su username" then the console print "su: /bin/bash: Permission denied" I have checked the perms of "/bin/bash" , it's 755. And I have tried all things which suggested from articles searched through Google. like change / or /root and other directory's permissions but failed.


[root@localhost lib]# ldd /bin/bash
linux-gate.so.1 => (0x00687000)
libtinfo.so.5 => /lib/libtinfo.so.5 (0x05846000)


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General :: Use '{}' To Redirect Output Of A Command Run Through Find's -exec Option?

Jan 10, 2011

I am trying to automate an svnadmin dump command for a backup script, and I want to do something like this:

find /var/svn/* ( ! -name dir -prune ) -type d -exec svnadmin dump {} > {}.svn ;

This seems to work, in that it looks through each svn repository in /var/svn, and runs svnadmin dump on it.

However, the second {} in the exec command doesn't get substituted for the name of the directory being processed. It basically just results a single file named {}.svn.

I suspect that this is because the shell interprets > to end the find command, and it tries redirecting stdout from that command to the file named {}.svn.

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General :: Different Results In Du And Df?

Oct 29, 2010

I was checking /opt and then found something unusual. Below are the results of du and df -h,

$sudo du -h /opt/|tail -3
1.1G /opt/IBM


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General :: Different Results From Vmstat And Ps?

Jun 24, 2010

I am trying to determine CPU usage on a radio controller running Linux. We have a script that another member of my work wrote using vmstat which I could not get any consistant results from. So, in an effort to understand what was going on I wrote a script using ps. Sadley after running several tests using both scripts, they do no match up at all, vmstat always gives me a much higher value. However, if I simply run the commands at any given time they do match up, therefore I believe that there is an error in one of the scripts. I am very new to linux and so Here is the vmstat script:

declare -i total
declare -i tries


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General :: Ran "find / -mtime +1 -exec Rm {} ;" - Trying To Clear A Directory ?

Jul 6, 2011

I'm very very tired, worked all night long, and I did't sleep for hours... So I'm like a zombie now... half awake, and half asleep.

I was trying to clear a directory. Then I run the command cd to enter the directory, and then before thinking I run this dangerous command. on my Linux server: "find / -mtime +1 -exec rm {} ;"

I got a lot of:

Could this command have deleted something inside these directories? I'm afraid that the next reboot the server won't startup...

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General :: 64 Bit - Different Commands Shows Different Results?

Jul 10, 2010

The system of my VPS is centos 5. I want to know if it is 32bit or 64bit. > uname -a Thu May 13 13:49:53 EDT 2010 x86_64 x86_64 x86_64 GNU/Linux

looks like 64 bit.
> getconf WORD_BIT
Looks like 32 bit.
Which is correct?

I believe the linux of my VPS is 32 bit. Because I downloaded a 64bit mongodb, found it can't start. And when I downloaded a 32bit instead, it works well.

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General :: When Using Grep From VIM, How To Jump To Results

Feb 22, 2011

When using the grep plugin to VIM, I can search the current directory for all occurrences of a string within a set of files, like this::grep Ryan *.txtThis outputs something like this:

file1.txt:3:Ryan was here
file2.txt:10:Ryan likes VIM
file3.txt:5:superuser.com is a fav of Ryan


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General :: Why Does `du` Not Show Results For All Files

May 22, 2011

I (for curiosity's sake) am running du -a inside /usr/lib/git-core and it does not show results for all the files in that directory. Why does it leave out an arbitrary set of files?this is what cd /usr/lib/git-core; du -a returns:

4 ./git-merge-resolve
972 ./git-config
12 ./git-show-index


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General :: Having Only One Instance Of Search Results?

Oct 6, 2010

having only one instance of my search results

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General :: SU Results In Cannot Execute Bash

Feb 13, 2011

SU results in Cannot execute bash: No such file or directory.

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General :: How To View Results Of Cron Jobs

Mar 21, 2010

I see so many guides on how to run crontab, but what I need right now is to learn how toFind log files about cron jobsConfigure what gets logged

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General :: Running Git-svn With Cron Results In Garbage

Mar 25, 2010

I've setup a git-svn repo with cron to fetch from the svn repo daily. I have a script to do the fetching, and this is what is invoked by cron. Everything is fine with the repo, and the script works fine when executed manually. However, when it runs under cron, empty files get dropped into the .git directory. The files have names that look like they are some base64 output, e.g. juTrvjP6m8 and kcKf3hu3b4. Two of these files show up for every cron run. I thought these might be commit hashes, but they're not, git-show says it's an unknown revision. I set-up the repo as follows:


The last line pushes the repo to a separate (bare) public repo from which others can clone. I'm piping the output from the cron job to a file, which looks like this:


The line "fatal: unable to run 'git-svn'" is alarming, but the fetch seems to go ahead anyway. Where are these empty garbage files coming from, and how to stop them? Am I in for bigger problems in the future?

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General :: Set Ls To Return Colored Results By Default

Sep 14, 2011

In my .bashrc I have the following lines to turn on colors for grep and ls alias ls='ls --color=auto'export GREP_OPTIONS='--color=auto'.I've tried changing the alias to export LS_OPTIONS='--color=auto' but that doesn't work.Is there anyway to use an export instead of alias. And are there actually any benefits to one way over the other?

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General :: Fdisk -l Doesn't Give Any Results

Mar 6, 2010

i'm in need of my hard drive & usb flash drive numbers, but when i do fdisk -l i get no results - it just gives me the prompt as if i've pressed the enter key on my k/board.

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General :: IF Statement - Not Getting Equal Results From All Cases

Jun 6, 2011

I'm a bit stuck with IF statement. There is the code:
# Variables
VAR2="echo $VAR1"

# Case 1
echo Case 1
if [ test == test ]; then
echo "equal"
echo "not equal"
echo ""

# Case 2
echo Case 2
if [ "VAR1" == test ]; then
echo "equal"
echo "not equal"
echo ""

# Case 3
echo Case 3
if [ "VAR2" == test ]; then
echo "equal"
echo "not equal"
echo ""

When executed, why case "2" and "3" differs from case "1"? Where am I wrong and how to solve this trouble? (my aim is to get "equal" from all cases).

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General :: Find -mtime Gives Unexpected Results?

Aug 12, 2010

$ ls -l
-rw-r--r-- 1 username vuser 35553 Aug 9 18:15 note.20100809_1815.sql


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General :: Sort Generates Unexpected Results

Jun 7, 2010

I sorted a large mailing list and the result is in almost sorted order, but not quite.The sort was invoked in the default manner, just "sort".See (below) a segment of the output file.(Note: the actual files have a street address following each name.I have omitted the addresses to avoid complaints about disclosing personal information on-line.) I expect all people named KATZ to be grouped together, but they aren't. This phenomenon occurs elsewhere in the output file, so it has nothing to do with surnames beginning with the character string KATZ.

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General :: What Do Various Colors In Results Of Bash Ls Signify?

Jan 12, 2011

I am at the moment using Ubuntu 10.10 with the default color scheme. If I open a bash terminal and type ls -l / I get the results with most information in white on the standard purple background, most directory names in blue on the normal background, tmp in blue on a green background, a file name in white on the normal background and links in teal on the normal background.

So in this situation I am wanting to figure out what the green background behind tmp signifies. I have searched for information about bash color codes and I find hundreds of links regarding how the CHANGE the colors. I have yet to find one which explains what the colors mean.

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General :: Filter Out Unique Results From Grep Output?

Feb 21, 2010

In linux, I can grep a string from a file using grep mySearchString myFile.txt.
How can I only get the result which are unique?

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General :: Tomcat - Why Does 'ls' Command Return Some Results In [squarebrackets].jar

Nov 25, 2010

Below is an example output of what I see when I run the 'ls' command on some directories in linux (this is from a tomcat/common/lib directory). However I'm not clear on why some of the filenames are appearing inside [square brackets]

-rw-r--r-- 1 root root 1038825 Aug 30 2006 [ant].jar
-rw-r--r-- 1 root root 566376 Apr 1 2008 [commons-collections].jar
-rw-r--r-- 1 root root 107392 Aug 18 2006 [commons-dbcp].jar


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General :: Unix - Cat Command To Save Results Of Other Commands

Nov 26, 2010

This question may be silly and super easy for linux connaisseurs, but I was just wondering, for instance, I want to use the >find command to search for a file and send the results to a text file

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General :: Find And Sort Results By Date Modified

Jun 7, 2011

so I was wondering how I could do a simple find which would order the results by most recently modified. Here is the current fine I am using. (I am doing a shell escape in php, so that is the reasoning for the variables. find '$dir' -name '$str'* -print | head -10

How could I have this order the search by most recently modified. (Note I do not want it to sort 'after' the search, but rather find the results based on what was most recently modified)

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General :: Edit A Clisp Script To Print Results To Txt?

Jul 11, 2011

I am looking to edit a great script made and posted by wje_1q Here I would like to be able to save results to a txt file is this possible

(defparameter *character-set* "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ")
;(defparameter *character-set* "ABC") ; < --- this line is for testing
(defparameter *word-length* 10)


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General :: Print Some Results In Text File Using Script

Feb 27, 2011

I am writing a script which would just print following kind of result into a text file (result.txt)

XYZ test Results
ID: <unique-id> Date: <date>
| Task | Result | Time |
| <task1> | <Result1> | <time1> |
| | | |
AD No: <adn> Generated Date: <tdate>

Above all the values of <something> are dynamic or predefined.

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