Category

automated

• 06.11.10
  hex2bin preserving endianness in C automated | pfortuny | (0)

  I cannot help copying this snippet. Assume f is a (char *) of length L, containing an hex string like '0aabdda' (without the leading "0x", like something coming from a sha function ---or like the sha1 stored by Leopard in the password files, which is the origin of this problem). You want to transform it into the corresponding sequence of bytes (that is, assuming the string is of even length, otherwise, we add a trailing, yes, trailing, at the end, '0'). We shall store the result in t, which points to a (char *) of length L/2. The following C code ...
• 02.16.09
  Perl for accents and spaces in html hrefs automated, scripts, shell | pfortuny | (0)

  Despite the title looking like spam, it uses all the relevant keywords in a problem which I guess is more common than it looks like, especially in non-English speaking countries. I had created (automatically, not by hand) a set of html, pdf and rtf files of the 477 items of a regional catalogue of industrial estate (sorry, no references because it belongs to other people and they have not published it yet). Then I made the index.html page listing and linking to all those files. It looked like a list of lines like the following one (notice that what follows looks ...
• 02.04.09
  Batch convert RTF to PDF automated, scripts, shell | pfortuny | (0)

  You've got the full details here (the OpenOffice Forum site). After following the instructions there, I was able to convert a bunch of some 500 rtf files into pdf's with the following single 'line of code' (although there must be a newline after the first quote ') $ find /Users/pedrofortunyayuso/Desktop/fichitas -name "*rtf" | while read -r i ; do /Applications/NeoOffice.app/Contents/MacOS/soffice -invisible "macro:///Standard.MyConversions.SaveASPDF($i)" ; done All the above shows my computer as an evident OS X, but this works on Windows (the referred site does the job on Windows, using, obviously a different shell construct) and, as far as I know, on ...
• 12.18.08
  Cron job every 5 minutes automated, cmd, security | pfortuny | (0)

  $ cat < /var/cron/tabs/pfortuny */5 * * * * /usr/bin/my_task The specified task is run every 5 minutes.
• 12.02.08
  Quiet grep automated, shell | pfortuny | (0)

  Usually during an cron job, one needs to check for an expression in a log file, or in the output of a command, without generating any cumbersone new output (such as a standard grep would do): this is exactly the use of the -q option of grep. For example: for i in `grep -v '^#' /etc/passwd | cut -f1 -d:` grep $i /var/log/samba/log.smbd | grep -q 'failed to authenticate' if [ $? == 0 ] ; then mail -s 'Error in samba' $i <<EOM ...
• 10.17.08
  DHCP, inverted commas and ssh with RSA automated, security | pfortuny | (1)

  There is a server I manage (called alex) which has not a fixed IP. As you know, I have a shell at the best Unix server out there (by the way, it is almost free. The problem is to keep an up-to-date record of the first server's IP address. I do it as follows (and yes, I know timtowtdi). What I did was: Create an RSA public/private key pair at alex: alex $ ssh-keygen -N'' -f 'id_alex' -t rsa which creates the files id_alex and id_alex.pub. Create a cron job for my account at alex which looks like 5,10,15,20,25,30,35,40,45,50,55,0 * * * * /usr/bin/ssh -i ...