Programming :: Using Bash Script To Purge Rotating Tcpdump Files?
Oct 20, 2010
writing a script that would keep the last three versions of tcpdump files.Due to the version of tcpdump I must use -C and cannot use -G. Using -C generates a new file after X MB's have been written and adds a .x after each new one. The problem is that these files are filling up the disk too quickly. The main part of the script will kill tcpdump when a certain condition is met but in the meantime I need to purge and only keep say the three last iterations of the dump file. So for example, there is dump.pcap.1, dump.pcap.2, dump.pcap.3, dump.pcap.4 and dump.pcap.5. I'd like the script to look at the datestamps and delete dump.pcap.1 and dump.pcap2 since the other three are the three newest files. comparing files based on dump.pcap.*, check the dates and only keep the three 'youngest' files?
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Apr 6, 2010
I would like to set up tcpdump to rotate log file every 1 hour and retain files for the lat 14 days but I don't think any combination of -C and -W would allow me to do that (Atleast I haven't been able to figure it out), so I am trying to rotate the files every X number of MB and retain the last 20 files. This seems to be fairly simple with the '-C X -W 20' option but I am having some trouble in customizing the names of the log files. I have tried '-w capture-$(date +%Y-%M-%d-%H:%M-)' thinking that each file would start with the current date and time but all files are using the date and time when the capture was started so the only difference is the number at the end (which is done by -W). if I can customize the names of the file so that it has the date and time when the capture in started. In fact if I can do that, I dont need the numbers that '-W' appends at the end but I dont know how to get rid of them.
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Mar 29, 2010
I can't get my apache2 log files to rotate on an Ubuntu 8.04 64-bit server install.
Does anybody know of logrotate creates an error log somewhere by default?
Here's my /etc/logrotate.d/apache2 file if someone has any insight if I am doing something wrong.
/var/log/apache2/*.log /var/log/apache2/portal/*.log {
weekly
missingok
rotate 52
nocompress
[Code].....
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Oct 10, 2010
how I should go about rotating files that end with a date stamp. This is the configuration I have to rotate my Apache access files, but it is not working:
/var/log/httpd/access_log.* {
compress
daily
rotate 1
copytruncate
missingok
notifempty
}
The files are created with a date extension like the ones below:
[Code]....
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Jul 20, 2010
I went to remove FreeNX from my Ubuntu Lucid machine so I opened the terminal and typed: "sudo aptitude purge freenx" The command worked but when I used the command "locate nx" I got a list of FreeNX associated files (as well as nxserver files). Is it possible to completely remove a program from my system? I thought "sudo aptitude purge" would do it but apparently not. My only concern is that in the future if I decide to install something related to this program it will interfere and cause problems.
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Oct 25, 2010
I am trying to configure logrotate on APP/DB servers.As per my backup policy,logs will compress in daily basis and and will be moved to a Central storage device.
My tomcat generate several application logs with date extension as well as .log extension.For eg app.log,app.log.2010-10-23-14,catalina.out,catalina.2010-10-25.log etc.
Currently my tomcat logrotation /etc/logrote.d/
#cat /etc/logroate.d/tomcat/
/usr/local/tomcat/logs/*log {
[code]....
But its rotating logs only with .log extension..ie app.log.2010-10-23-14 (with date extension) is not rotating.If i put "*" instead of "*log",its rotating all files including rotated files. How can i rotate files which is having date extension.Also i dont want to keep rotated logs for more than 3 days.
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Sep 20, 2010
When I remove an application from YaST does it remove its config files too? If it does not, is there any command by which I can remove the config files for all the uninstalled applications?
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May 2, 2010
Did a fresh install of 10.04 Desktop 86_64 this weekend. One of the first issues I noticed right away was that apt was not function properly. Say for example you install the packages tor and vidalia (assume I'm running everything from root). #apt-get install tor vidalia This command will check and install necessary dependencies, for example 'privoxy'. Now if you decide that you don't want to use privoxy and instead use polipo, you would probably feel inclined to remove privoxy. Well I found that apt-get autoremove, apt-get remove, apt-get purge WILL NOT remove all the files/directories associated with the package. You'll find that after running each of these commands, there will still be directories, scripts, etc. in /etc/init, /etc, and /etc/rc*.d. The only solution I've found to completely removing a package is aptitude purge [package].
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Mar 31, 2011
I need to rename the resulted searched files from a loopI have the following code:
find . -name DOC* | while read i
do
find $i -type f -name '*.txt'
done
basically, I am searching for all txt files inside any folder starting with DOC name.this code is working fine with me.I need to rename those .txt files to .txtOLDOS: Ubuntu 10.4Bash shell
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Dec 8, 2010
I am an uploader to a various hosts, so this tiny script me a lot. I make a rar archive and split files with 100mb. I could get 3-4 or even 76 parts of rar files and it would take me some time to paste all these urls to remote upload function of filehosting sites. For example:
Code:
server:/home/cober/downloads/teevee# ls -al
total 358784
drwxrwxrwx 2 root root 4096 Dec 8 19:38 .
[code]....
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Jul 13, 2011
I have a lot of filenames (strings) following the same convention
m02_+1+7_London_0000$01.cfg
m02_+1+8_London_0000$01.cfg
m02_+1+8_London_0000$01.cfg
[code].....
What I want to do is to create a script that will interpret the following string and save into variables part of its name
m02_+1+7_London_0000$01.cfg as
------X-Y--City---------
X=1
Y=7
City=London
[code]....
then I want to copy the files that go all the files with the same City and X and Y to the same subfolder City/MX.Y I will need some help start doing that. And I think the first would be to get part of the filenames strings into variables.
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Mar 11, 2011
I am trying to find a nightly backup if it was successfully copied over, rename it and curl, but it's always passing the check even if the file is older than specified. From the command line it does as it should. Example is here;
Code:
find /backup -type f -mmin +4440 -exec echo "found" {} ;
- nothing returned (good). Then I change the time
[code].....
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Jun 15, 2011
I'm making a small script for searching and doing some operations with photos, but I'm kinda stuck on this little function:
Code:
function findallformat {
prefix=""
if [ $1 = -pre ] then
[code]....
That function should find for every file with a certain type; and you can specify a prefix using a "-pre" followed by the prefix that you want to search. The format should be "stackable", so you can use as many types that you want, without repeating the same function on the code.
Example: findallformat -pre IMG_ .JPG .CR2 #That should search files that start with "IMG_" and finishes with .JPG and .CR2. My problem it's that, when I try to use it on the script, it says "bash: syntax error near `token' unexpected `}'"
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Jan 26, 2009
I want to catch some outputs in two different log files in bash, file simple.log and all.log So far, the script is started like this:
Code:
xterm -e "(./myscript.sh | tee -a simple.log) >& all.log"
What I want is:
- In simple.log, I want all the stdout but WITHOUT errors.
- In all.log I want BOTH stdout and stderr.
So all is ok, and the output becomes:
all.log
Code:
starting copying files
mv: cannot move ... : permission denied
copying completed
simple log
Code:
starting copying files
copying completed
But, in the new xterm, I'm loosing stdout. There is no output.How can I have the files logged as they are but also have the stdout in the xterm.
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Apr 1, 2010
I'm trying to rename a lot of files getting rid of the space on the names. For that purpose I wrote this very simple bash script, but for some reason is not working.
Code:
for i in "$(ls)"
do
j=$(echo "$i" | sed 's/ /_/g')
mv "$i" "$j"
done But what I get in return for each line is just one long file name with all the file names concatenated. I've tried with echo -e "$i" as well with no results. This has to be something really simple that I'm missing but I just can't see it.
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Nov 6, 2010
I am trying to write a simple script to list all the files in a directory. The script I wrote was as below where the pdb_files is a directory and all the files which I want to list are in that folder.
Code:
files=`ls -F pdb_files/*THERMO*`
for inFiles in $files
do
echo $inFiles
[Code]....
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Mar 21, 2010
I have around 600 empty text files that I need to add the name of this file as part of the data, I meanfiles from "file1.txt to "file599.txt, all of them empty, and I need to get the name inside the file, so, when I open the file show the name as part the data "file1".these files were created on my web site, I am thinking in a small script in bash
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Jan 14, 2011
How can I iterate over all the files in the current directory to check for certain permissions? This is what I have:
Code: #!/bin/bash
for file in *.tar.gz
do if [ -r "$file" ]
then echo "$file is readable"
else echo "$file is NOT readable"
fi done
But this only checks that the current user has read permissions for each file. I want to check that the group "others" has read permissions for each file. How can I do this? Is there a built in function to check if a file has read permissions for the "others" group? Otherwise, I thought I might be able to use this:
Code: $ stat --format=%a file
744 And parse the output "744" and make sure the 3rd number is between 4 and 7 (since the octals 4-7 have read permissions for others).
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Feb 10, 2010
I'm building my first BASH programs and I have a hard time. I can't do a search in a folder and filter only script files without extension, the problem is to differentiate the script files from the others. I tried with ls I tried with find and i don't find a way to make it work.
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Feb 2, 2010
Never mind, I figured it out myself. Firstly, the old version of BASH I'm using doesn't support
Code:
for i in {1..27}
So I had to use
Code:
for i in 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27
Secondly, it was simply
Code:
#!/bin/bash
for i in 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27
do
[code]....
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Jul 22, 2011
I have about 50 files that the script will operate on, they are all located in the same directory.I need a bash script that will operate on all files in a directory. The script needs to add two lines to the beginning of each file based on the file name, and one line to the end of the file.A file named myfile.h should add these two lines to beginning of the file:
Code:
#ifndef MYFILE_H
#define MYFILE_H
[code]....
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Jan 31, 2009
i was wondering if there's a bash script to check the amount of files in a directory with an IF statement..
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Jan 26, 2011
I have wrote a 1 line command that parses a file, locates the IP Address in the file and then trims the output the way I want it, and then sorts numerically and by uniqueness and then >> appends to output.txt
I can get all the IP's into 1 file "output.txt", but what I am really looking for is some type of way to create a text file, for each IP it finds labeled xxx.xxx.xxx.xxx.txt and also put that ip address into that file..
xxx.xxx.xxx.xxx = the ip address it finds
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Nov 9, 2010
However, the ffmpeg command generates a temporary file blahblah.mpg.tmp of about 1GB per hour of transcoded video.My issue is that I can't seem to delete these files automatically from any bash script.Now from the command line, I can cd to the directory and just rm -f *.tmp and they get deleted. However, from my script, that same command doesn't remove those files. I thought maybe the file was in use, so I put a sleep command in for like an hour before the delete happens, but it still fails. I also put rm -f /mnt/mythtv/*.tmp in a root cronjob and it still doesn't delete the files.
If I just rm *.tmp I do get a prompt about "Are you sure you want to delete this write protected file?". But the -f switch seems to work fine as a normal user from the command line and just delete them.Does anyone have an idea how to troubleshoot this problem? The particular filesystem that the tmp files get generated on is on it's own xfs partition mounted as /mnt/mythtv.
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Mar 29, 2010
I have to copy some log files with a cron job; I'd like to copy only the newer files added because I run the script with a weekly cron. all the log files are named like "10-03-29.CVS" and reside in a dir. When I copy I'd like to copy only the files not already copied with the last cron job.
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May 9, 2011
bash script to give sensible names to a large number of photos. I hope to be able to run a script with an argument which will become the filename followed by a number beginning at 1.
Code:
./file_rename.sh Summer2009_
Summer2009_0001
Summer2009_0002
Summer2009_0003
[Code]....
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Feb 3, 2011
i want to find all files with .h or .c extension and print them on the screen. How can i do it with bash script programming?
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Apr 1, 2011
*I'm using Ubuntu 10.10
My issue is I can't handle the files with spaces in their name, I've donde the below script to print each file found inside folder and subbfolders with "find".
I would like to "ls" to each file found with its complete path and with its basename too.
Code:
files=$(find . -type f)
for each in "$files"
do
ls -l "$each" # 1rst option I've tried to list with full path
ls -l "$(/bin/echo "$each")" # 2nd option I've tried to list with full path
ls -l "$(/bin/echo $(basename "$each"))" # 1nd option I've tried to list with it basename
[Code].....
How can I list "ls -l" in both cases (with full path and with basename) when there are files with spaces in their name?
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Oct 19, 2010
I want to delete all files within a specific folder without actually deleting the folder, what is a good bash command for this?. I found this one but encountered some errors even though I am executing it within the specific folder:
useratdebian:/home/user/folder# find . -type f -exec rm -rf {} ;
[1] 5052
useratdebian:/home/user/folder# find: missing argument to `-exec'
[1]+ Exit 1 find . -type f -exec rm -rf
The command as it appears is:
find . -type f -exec rm -rf {} ;
how to delete only the files contained within the folder called "folder" for example?
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Mar 14, 2010
How to build a list of files under a directory that may have any permissible characters in the name, that is anything except NUL? The only possible (?) bash data structure to contain a list of such names is an array because NUL cannot be used as a list item separator so no X-separated list can safely be used; there is no "X" that might not be part of a file name. OK -- but how to populate such an array? Here's what I've tried.
Code:
#!/bin/bash
# Set up test files
dir=$(mktemp -d "/tmp/${0##*/}.XXXXXX")
touch $dir/foo $dir/bar
[code].....
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