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help writing logon script to access and update a database
I am trying to write a php script to access a database a and write user info into a table upon login. Currently I appended the script to the bottom of the profile file in /etc/profile. However, it doesn't appear to be working when I log in. Below is the script that i have.
# /etc/profile # System wide environment and startup programs, for login setup # Functions and aliases go in /etc/bashrc pathmunge () { if ! echo $PATH | /bin/egrep -q "(^|:)$1($|:)" ; then if [ "$2" = "after" ] ; then PATH=$PATH:$1 else PATH=$1:$PATH fi fi } # ksh workaround if [ -z "$EUID" -a -x /usr/bin/id ]; then EUID=`id -u` UID=`id -ru` fi # Path manipulation if [ "$EUID" = "0" ]; then pathmunge /sbin pathmunge /usr/sbin pathmunge /usr/local/sbin fi # No core files by default ulimit -S -c 0 > /dev/null 2>&1 if [ -x /usr/bin/id ]; then USER="`id -un`" LOGNAME=$USER MAIL="/var/spool/mail/$USER" fi HOSTNAME=`/bin/hostname` HISTSIZE=1000 if [ -z "$INPUTRC" -a ! -f "$HOME/.inputrc" ]; then INPUTRC=/etc/inputrc fi CLASSPATH=/usr/lib/jdk1.6.0_07/lib:. PATH=$PATH:/usr/lib/jdk1.6.0_07/bin:. export PATH USER LOGNAME MAIL HOSTNAME HISTSIZE INPUTRC CLASSPATH for i in /etc/profile.d/*.sh ; do if [ -r "$i" ]; then . $i fi done unset i unset pathmunge <? //make connection $connection = pg_connect("dbname=postgres user=postgres host=localhost"); //report status if(!connection){ print("Connection Failed."); exit; } //insert data into userstats //insert data into userstats pg_exec($connection, "INSERT INTO userstats VALUES ('$USER','localhost')"); ?> Can somebody help me find a way to solve this problem? |
First, I'll recommend you place your script in its own file for execution. Then call or source this script from within the correct shell startup script.
/etc/profile, ~/.bash_profile, and ~/.profile is used by login shells ~/.bashrc is used by interactive shells Login shell startup scripts are for doing things once per login (to the system, not just a new terminal window) Interactive shell startup scripts are for doing things for every shell that is invoked The problem may be that your shell is not a login shell, and you certainly don't want your command script running on every shell launch. A login shell will have a - (dash) in front of its command name in ps output. Place unique echo commands in each of ~/.bashrc and ~/.bash_profile to convince yourself which one(s) is read and sourced. |
Thank you Mr. C. I was able to establish that the script need to be run from /etc/bashrc after using your suggestion of entering the echo commands into the different files. Now I am having trouble getting my script to execute.
Below is my script which I have saved in the /etc directory <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"> <html> <head></head> <body> <?php //make connection $connection = pg_connect("host=localhost dbname=postgres user=postgres"); //report status if(!connection){ print("Connection Failed."); exit; } //insert data into userstats //insert data into userstats pg_exec($connection, "INSERT INTO userstats VALUES ('$USER','localhost','now()')"); //close connection pg_close($connection); //close connection pg_close($connection); ?> </body> </html> The error that is printing is : ./loginscript: line 1: syntax error near unexpected token `newline' ./loginscript: line 1: `<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN">' |
The "script: is an HTML document, not a shell script. Do you expect a browser window to open?
Since the content is not directly executable, instead launch the browser with the document as an argument. Eg: firefox mydoc.html |
Ok, thanks for letting me know that. My goal is simply to write a script that will update my database on login. I do not really desire to open up the web browser. Do you know how I can revise the "script" to accomplish this task? Thanks for your help.
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You can use any of the following to implement your script:
*) bash - using postgresql command line programs *) PHP command line, using a php script file *) perl or python, with their postgresql bindings Pay attention to their return values. Your script is very close already to being a PHP script - just remove the HTML code, and place the line : #!/path/to/your/php as line 1 in the file. Change the file to executable (chmod a+x /path/to/script) and then run it (/path/to/script). |
Mr. C,
Thanks for the help. I managed to get communication with the database have the script add rows. It was tricky because there where two versions of php installed and I was trying to call the wrong version so it was not recognizing some functions. I am still having trouble though. Currently, I call the script from bashrc. This runs the script each time a new shell is started. However,sometimes it can't run because the script is in the root directory. What I want to due is have the script run and update the database as soon as users login to NX. I tried putting the script in .profile and that did not seem to update the database. Do you think you know how to solve my problem? Thanks again, K.out |
Create your script. If other users are going to use it upon login, install it in /usr/local/bin or /usr/local/sbin.
Then, in each of the /etc/profile variants for all the user shells your users use (how's that for a mouthful of users!), call your /usr/local/{s}bin/script. Each shell has its set of files that are scanned for existence and sourcing on either creation of a new login shell, or a non-login interactive shell. Check INVOCATION in man bash, and similar locations for other shells you use. |
I placed the script in /usr/local/bin directory and called it from the /etc/profile file. This works for communicating with the database on login; however, it writes 15 entries to the database each time there is a login. Do you know what would cause this? Also, if you do, can you help me fix this problem as well?
Thank you, K.out |
Most likely what is happening is the file /etc/profile is being read by each shell started to launch some GUI app that comprises your desktop environment (I'm assuming you're using a GUI). The file /etc/profile is used for login shells, but unfortunately different distributions configure their user startup environments differently, and I don't keep track of which disto does what anymore.
Can you give details on your distribution, version, and GUI or non-GUI environment? |
When I log in I see a fedora 8 desktop. However, when I type env in the command line of the terminal, I see nothing refering to fedora 8. I only see stuff referring to GNOME. This would be version 2.20.3 from the Red Hat Distributor. I am not sure if this helps or makes sense.
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See my post #10 here, particularly the pdf file referenced that gives you the correct locations for post-login script running in GDM.
http://www.linuxquestions.org/questi...ghlight=zenity |
In your .profile file append the command - "./runupdate.sh"
and the runupdate.sh should contain a sql insert script that will insert the desired values to the database. This should do the trick. Debian Kernel |
I think the OP wanted a *global* solution:
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Could you try running the script (from my example earlier - execute /runupdate.sh from the command prompt). See if this does an insert into table. If it doesn't then voila ... you have identified the root cause of the issue.
:) |
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