General :: Writing A Bash Shell Script For Website Backup
Aug 10, 2010
I am about to write my first shell script for backing up my server.
These are the steps I have identified so far.
Copy files to be backed up to /srv/backup/ run mysqldump and copy the file to srv/backup/databases run duplicity to backup /srv/backup/* to another folder on my machine
I am writing a bash shell scrip that will be run everyday, and will carry out the three tasks mentioned above.
Note: point 3 (backing up to a local folder) is only a temporary measure - to allow me to understand what I'm doing, since all the tools I am using, are new to me. Once I can backup and restore correctly, I will use duplicity to compress and encrypt the files and upload them offsite.
If my understanding of duplicity is correct (according to the documentation here), the first time I run the script, a FULL backup will be done. Every subsequent backup will then be incremental. I will then force a FULL back on say a weekend.
First things first though - I have a few questions:
I would like to use backup rotation for the 'scheme' described above - I would like some recommendations on what kind/type of rotation to use. Once I have implemented the backup rotation, how can I restore from a particular day back in time (assuming the backup exists of course). ?
I am running Ubuntu 10.0.4
View 1 Replies
ADVERTISEMENT
Jan 5, 2011
I have been trying to write a simple snip of bash shell code to import from 1 to 100 records into a Bash array.
I have a CSV file that is structured like:
record1,item1,item2,item3,item4
record2,item1,item2,item3,item4
record3,item1,item2,item3,item4
record4,item1,item2,item3,item4
And would like to get this data into corresponding arrays as such:
$record1[item1-4]
$record2[item1-4]
$record3[item1-4]
$record4[item1-4]
View 9 Replies
View Related
Jul 28, 2010
I am trying to write input to a shell and get the shell to parse the input that I am writing to it as if a user was typing in commands.
Thus far I have tried echoing some text into the shell's FD for STDIN in /proc/<pid>/fd Whilst this displays the text that I echo, the shell that I am writing to never tries to execute the command that I pass to STDIN. What is the difference between a shell taking STDIN from the user and data written to STDIN by another process e.g. echo ? It appears I am missing something fundamental.
View 5 Replies
View Related
May 6, 2011
When you are performing time consuming operations in bash like installing new software, is it possible to write text that will appear at the prompt when the operation has finished.
E.g
Imagine running:
apt-get install eclipse-platform
Then it will use quite a while to finish while you see the installation log, meanwhile I want to create new folders (workspaces) which Eclipse later will use.
Is this possible without opening a new terminal (or tab)?
View 5 Replies
View Related
Dec 7, 2009
I was assigned to write a bash script in backtrack which will reveal the active IP Addresses on a /30 network. Normally I would not have a problem with this, but I just dont understand because would you not need the entire prefix (ex: 192.168.1) in order to ping sweep for a certain IP range?basically what I'm asking is...How do I nmap a list of IP's for a "/30 network" as that's all that we're given.
View 3 Replies
View Related
Sep 2, 2010
I was working on a shell and got some weird exceptions in my program.Just as a reference, I want to save all that is there on my shell to a text file. I do not just want the command history but also all the results that those commands produced at the shell.Is there some built-in utility to do this? I have kept the shell open for now, so that I can take the backup. Also, I am using xterm and it does not allow selecting all the way upto the top of the shell, so the ultimate way is to take the backup one screen at a time.
View 2 Replies
View Related
Apr 3, 2011
How to made a simple website in linux using bash scripting.
View 3 Replies
View Related
Jun 20, 2011
I have a problem need help, I want to do a schedule with using shell script with crontab in linux SuSE SLES 10.
1. I have many server that want to do backup mysql all from that server everyday. I need advice for for write shell script to backup all mysql in different server to server backup everyday and create auto folder as date example 27102009, 28102009..........for a month will has 30 folder in server backup.
2. Also need to write shell script to delete all folder but keep only one week last example from 1 to 30 it will has 30 folder in sever backup but i want to keep only 7 folder last and want to set schedule delete it every saturday night.
3. used that shell script with crontab in linux.
View 3 Replies
View Related
Mar 14, 2010
I want to change my default shell to tcsh. I used
Code:
usermod -s /bin/tcsh username
command as given at url
But if I open a new shell, it is still a bash shell.
How do I make my default shell as tcsh?
View 6 Replies
View Related
Mar 25, 2010
I used c-shell previously in unix. One of the useful command I used frequently is foreach.> foreach a (`cat list`)>> echo $a need to use bash shell now instead, and realized that I can't use foreach anymore. The command is not found. Does anyone knows if there is similar command / function in bash shell?
View 9 Replies
View Related
May 11, 2011
So I open firefox from my bash shell with:
Code:
firefox google.ca
it opens firefox, I can browse, etc.
Now if I alt-tab back into my shell, i can't enter any commands in the shell.
I know that i can do this if I close firefox, but I want to keep working in my shell with firefox still open.
Is this possible?
View 6 Replies
View Related
Feb 6, 2011
I want to perform an action with a shell script and then log the event in a file in /var/log. However, I keep getting permission denied error messages.
View 5 Replies
View Related
May 4, 2010
Is there a way to define an unlimited history in Bash ?
View 3 Replies
View Related
Aug 18, 2010
Possible Duplicate: Can history files be unified in bash? I have bash running in an ssh session, call this session A. I leave the office, go home, ssh to the same box, call this session B. From session B, I'd like to be able to look at the history of session A.
View 1 Replies
View Related
Oct 4, 2010
How can I get/filter history entries in a specific range?I have a large history file and frequently usehistory | grep somecommandNow, my memory is pretty bad and I also want to see what else I did around the time I entered the command.For now I do this:get match, say 4992 somecommand, then I do history | grep 49[0-9][0-9]this is usually good enough, but I would much rather do it more precisely, that is see commands from 4972 to 5012, that is 20 commands before and 20 after. I am wondering if there is an easier way? I suspect, a custom script is in order, but perhaps someone else has done something similar before.
View 2 Replies
View Related
Oct 26, 2010
Currently the terminal prompt looks like this:[karlis@karlis-desktop current_folder]$How can I minimize the prompt, so that it only shows $ or # without extra info in square brackets?I checked the preferences for the default Gnome-Terminal and Terminator - there are no settings for this. It is pretty hard to use terminal when working in directories with long names.
View 1 Replies
View Related
Apr 12, 2011
I've written a bash shell script (code provided below) that gives the user 4 options. However I'm having a little trouble with the code. Right now when they select option 3, to show the date.It loops over and over again.I have to close the terminal window to stop it because it's an infinite loop. How would I prevent this? Also quit doesn't seem to be working either.
#!/bin/bashe
echo -n "Name please? "
read name
echo "Menu for $name[code]............
View 2 Replies
View Related
Aug 3, 2011
In linux how do I to get the ascii decimal/hex/oct code from a char or a ascii char from a decimal/hex/oct code. I see from the gnu sed user manual that I can use the d# o# x# to specify a character but I am not sure how to use that. If some one has a better way to get the the ` and ' chars through I want to sed with the backtick '`' character and ''' single quote character.
sed '/`/p'
these don't work
sed '/'/p'
sed '/`/p'
View 3 Replies
View Related
Feb 27, 2011
I am working on a simple script that should take two command line arguments, a [number] and a [name]. The first thing the script should do is check to make sure that no more and no less than two command line arguments have been entered when calling the script - an error message should be delivered if the condition is not true.
If two args have been entered, then the message 'processing "scriptname"' should appear, where scriptname is the name of the script being called. The script should then write to the screen "Hi [name]!", and should write this phrase [number] of times. For example, the command $ myscript 2 joe would produce the output: I have read the manual many times looking for examples, and I am very close by virtue of my own efforts. Further, I have searched these forums and others for good examples, which have also gotten me very close. Still my script is not completing the objective, and I am wondering if someone could point me in the right direction. Script:
[Code]...
View 13 Replies
View Related
Apr 30, 2011
i have a script where i need to pass an argument "1234:-)"if i run this as ./shell.sh 1234:-)it wont work because invalid character. i need to handle this with expect utility so if i pass it as ./shell.sh "1234:-)"no issue in bash but expect does not recognize this.
View 7 Replies
View Related
Dec 30, 2010
how do i use bash shell scripts inside php.I am just trying to call a simple cp command using php. Its not doing anything.
View 2 Replies
View Related
Jun 25, 2010
Is there some type of functional way to read things in the Python shell interpreter similar to less or more in the bash (and other) command line shells?
Example:
Code:
>>> import subprocess
>>> help(subprocess)
...
[pages of stuff to read]
...
I'm hoping so as I hate scrolling and love how less works with simple keystrokes for page-up/page-down/searching etc.
View 4 Replies
View Related
Mar 26, 2010
I need help creating a script that makes a log file in wich to save information about every user that uses the ftp command (information like username and date) and the server to wich he is trying to connect.
View 2 Replies
View Related
Apr 24, 2010
I just wonder the distinction calling the function between $(one_function) and one_function in bash shell script.
When I set the variable PS1 in ~/.bashrc, I can't invoke the function by one_func
ex:
export PS1="
[e[31m] $(one_func) # it works
export PS1="
[e[31m] one_func # it doesn't work
View 3 Replies
View Related
May 9, 2011
I am wondering is it possible to echo values like below described? The situation is - there are too many "doc" files named like "PLCI507_01234567.doc", and there is a Form in a text file named "form.txt" looks like below:
I am already able to create files in the same format for each documents but now I want all the information in a single form and the form should be updated with file informations ie. file name, created date, md5sum etc.
The updated form.txt should be like below.
View 2 Replies
View Related
Oct 4, 2009
I have a CentOS dedicated server running ProFTP. I have created user accounts which are meant for FTP access only but the users cannot connect to the FTP unless their shell access is /bin/bash
Here is an example line that is outputted when I use this command:
This user can access the FTP fine, but he can also access SSH which I don't want to allow him to do. If I set his shell access to /bin/false then he can't connect to the FTP.
What can I use in instead of /bin/bash to allow FTP but don't allow SSH?
View 2 Replies
View Related
Jun 21, 2010
I have a user that has been used for long time now that runs o C Shell... now there is a need to change it to Bash Shell? Can I cause a problem changing his shell from C to bash? I mean apps or variables?
View 2 Replies
View Related
Jan 21, 2010
I am unable to use clear or cls command on bash shell. I have recently installed Cygwin and am using that for practicing unix commands.
I see that I can use Ctrl + L to clear the screen. I created an alias in my .bashrc to do the same as
alias cls='^L'
This is how i defined other aliases e.g.
And they work. Hence I assume cls will work too but this is what I get when I try to give cls on command prompt. Am i missing something? Is there a way to do this?
Then someone suggested, You cannot alias keystrokes to commands or vice versa. You could just alias cls to an echo command: echo -en "x0c"
And I added the following to .bashrc,
Sourced the .bashrc file. No errors but cls still does not clear the screen. Infact when I typed the echo -en "x0c on command prompt as well, nothing happened. What does this command do?
View 3 Replies
View Related
Mar 15, 2011
I would like to evaluate a postfix string using bash shell script,but I do not know how to start.
View 1 Replies
View Related
Sep 18, 2010
Any one tell me online bash login using putty [ssh port] for practicing a linux.
View 6 Replies
View Related
