Thank you for the reply!
I'm not really sure of what you mean with "catalog", but the main thing is that I have to figure out what "uniq" and "xargs" commands do.
In the meantime, in my way, I accomplished the task; maybe it's not so elegant, but at least it works! :P
Code:
#!/bin/bash
tot1=`ls /var/cache/apt/archives | grep -c deb`
echo apt-get autoclean...
sleep 1
sudo apt-get autoclean
echo installed packages back-up...
sleep 1
cd /var/cache/apt/archives
sudo mkdir cache-backup
for c in `ls | sed 's/_.*//'`;
do for s in `dpkg --get-selections`;
do case $c in
$s) echo backing-up $c && sudo cp -r $c*deb --target-directory=cache-backup;
esac
done
done
sleep 1
tot2=`ls /var/cache/apt/archives | grep -c deb`
bup=`ls /var/cache/apt/archives/cache-backup | grep -c deb`
echo ---------------------------
echo "total packages in cache were: $tot1"
echo "packages after auto-cleaning: $tot2"
echo "installed packages to retain in cache: $bup"
echo ---------------------------
sleep 2
echo removing entire cache...
sudo rm *.deb
sleep 2
echo restoring backed-up packages...
sudo cp /var/cache/apt/archives/cache-backup/*.deb /var/cache/apt/archives
sudo rm -r /var/cache/apt/archives/cache-backup
sleep 2
echo closing...
sleep 2
exit
...all stuffed with a lot of useless echoes, since I know exactly what the script does: removing from the cache in "/var/cache/apt/archives" all not installed packages.
I'm sure I'm doing something wrong but as I am new to bash shell scripting I'm not sure what:
Here's the code
webalizer.conf is sitting in the same directory as this file which is named webalizer.sh. Can someone tell me if I've got the syntax right -- it that's correct? I'm executing the... (3 Replies)
Hi guys, I'm new to the forum so forgive me if I'm sounding ... daft.
I currently work in a Tech Support role. Every day we have to generate data by running around 10 .sh scripts. I was thinking instead of having to ./filename 10 times is it possible to right a new script that will run these for... (16 Replies)
I am writing a shell script in bash one of the thing I want to show is size of export /home
du -sk /export/home/oracle | cut -c 1-5
echo "kbytes"
when I run the script kbytes shows up in the second line, How can I append kbytes on the same line, such as
61233 kbytes
please guide
thanks (2 Replies)
So I need a script that does the following:
If a certain user is logged in
Run `command`
Else
Echo “incorrect user”
This is my first stab...which doesn't work:
#!/bin/bash
X="user=`ls -l /dev/console | cut -d " " -f 4`"
Y="foobar"
echo $X
echo $Y (4 Replies)
I have a bash script, but it needs to have a simple protection with password.
So if a user wants to run the script , there should be a kdialog to asks for a password.If the password is correct the script starts to run.
It should not be the passord of root or another admin user.Just a password in... (2 Replies)
I want to write a bash script to:
1. Send an email from localhost to an external gmail account. (gmail then automatically forwards the message back to a pop account on the same server.
2. Script waits 3 minutes then checks to see if the email arrived, and if not, it sends an email to... (9 Replies)
to gather the cpu utilization from a system in 5 minute intervals and direct output to file.
I'm new at scripting and while this seems like an easy task I'm confused on where to start. thanks for any help (1 Reply)
Hello All,
First and foremost, if I have posted this question in the wrong forum/section, I apologize.
Okay so here is my dilemma. I have written a BASH script that automatically restarts a tomcat on a given server. That part was simple enough. However, now I would like to not only restart... (14 Replies)
Hello all!
This is my first post and I'm very new to programming. I would like help creating a simple perl or bash script that I will be using in my work as a junior bioinformatician.
Essentially, I would like to take a tab-delimted or .csv text with 3 columns and write them to a "3D" matrix:
... (16 Replies)
I've put together a very simple bash script to check for software patches and bounce the server, once complete. This is on a Mac server. The script works just fine upon execution, however, cron responds with:
/bin/sh: /usr/local/bin/softwareupdates.sh: No such file or directory
Crontab:
... (6 Replies)
Discussion started by: Nvizn
6 Replies
LEARN ABOUT LINUX
rbash
RBASH(1) General Commands Manual RBASH(1)NAME
rbash - restricted bash, see bash(1)RESTRICTED SHELL
If bash is started with the name rbash, or the -r option is supplied at invocation, the shell becomes restricted. A restricted shell is
used to set up an environment more controlled than the standard shell. It behaves identically to bash with the exception that the follow-
ing are disallowed or not performed:
o changing directories with cd
o setting or unsetting the values of SHELL, PATH, ENV, or BASH_ENV
o specifying command names containing /
o specifying a file name containing a / as an argument to the . builtin command
o specifying a filename containing a slash as an argument to the -p option to the hash builtin command
o importing function definitions from the shell environment at startup
o parsing the value of SHELLOPTS from the shell environment at startup
o redirecting output using the >, >|, <>, >&, &>, and >> redirection operators
o using the exec builtin command to replace the shell with another command
o adding or deleting builtin commands with the -f and -d options to the enable builtin command
o using the enable builtin command to enable disabled shell builtins
o specifying the -p option to the command builtin command
o turning off restricted mode with set +r or set +o restricted.
These restrictions are enforced after any startup files are read.
When a command that is found to be a shell script is executed, rbash turns off any restrictions in the shell spawned to execute the script.
SEE ALSO bash(1)GNU Bash-4.0 2004 Apr 20 RBASH(1)