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Diffstat (limited to 'usr.sbin/cron/doc/CONVERSION')
| -rw-r--r-- | usr.sbin/cron/doc/CONVERSION | 85 |
1 files changed, 0 insertions, 85 deletions
diff --git a/usr.sbin/cron/doc/CONVERSION b/usr.sbin/cron/doc/CONVERSION deleted file mode 100644 index f30df7d..0000000 --- a/usr.sbin/cron/doc/CONVERSION +++ /dev/null @@ -1,85 +0,0 @@ -$FreeBSD$ - -Conversion of BSD 4.[23] crontab files: - -Edit your current crontab (/usr/lib/crontab) into little pieces, with each -users' commands in a different file. This is different on 4.2 and 4.3, -but I'll get to that below. The biggest feature of this cron is that you -can move 'news' and 'uucp' cron commands into files owned and maintainable -by those two users. You also get to rip all the fancy 'su' footwork out -of the cron commands. On 4.3, there's no need for the 'su' stuff since the -user name appears on each command -- but I'd still rather have separate -crontabs with separate environments and so on. - -Leave the original /usr/lib/crontab! This cron doesn't use it, so you may -as well keep it around for a while in case something goes wakko with this -fancy version. - -Most commands in most crontabs are run by root, have to run by root, and -should continue to be run by root. They still have to be in their own file; -I recommend /etc/crontab.src or /usr/adm/crontab.src. - -'uucp's commands need their own file; how about /usr/lib/uucp/crontab.src? -'news' also, perhaps in /usr/lib/news/crontab.src... - -I say `how about' and `perhaps' because it really doesn't matter to anyone -(except you) where you put the crontab source files. The `crontab' command -COPIES them into a protected directory (CRONDIR/SPOOL_DIR in cron.h), named -after the user whose crontab it is. If you want to examine, replace, or -delete a crontab, the `crontab' command does all of those things. The -various `crontab.src' (my suggested name for them) files are just source -files---they have to be copied to SPOOLDIR using `crontab' before they'll be -executed. - -On 4.2, your crontab might have a few lines like this: - - 5 * * * * su uucp < /usr/lib/uucp/uudemon.hr - 10 4 * * * su uucp < /usr/lib/uucp/uudemon.day - 15 5 * * 0 su uucp < /usr/lib/uucp/uudemon.wk - -...or like this: - - 5 * * * * echo /usr/lib/uucp/uudemon.hr | su uucp - 10 4 * * * echo /usr/lib/uucp/uudemon.day | su uucp - 15 5 * * 0 echo /usr/lib/uucp/uudemon.wk | su uucp - -On 4.3, they'd look a little bit better, but not much: - - 5 * * * * uucp /usr/lib/uucp/uudemon.hr - 10 4 * * * uucp /usr/lib/uucp/uudemon.day - 15 5 * * 0 uucp /usr/lib/uucp/uudemon.wk - -For this cron, you'd create /usr/lib/uucp/crontab.src (or wherever you want -to keep uucp's commands) which would look like this: - - # /usr/lib/uucp/crontab.src - uucp's crontab - # - PATH=/usr/lib/uucp:/bin:/usr/bin - SHELL=/bin/sh - HOME=/usr/lib/uucp - # - 5 * * * * uudemon.hr - 10 4 * * * uudemon.day - 15 5 * * 0 uudemon.wk - -The application to the `news' cron commands (if any) is left for you to -figure out. Likewise if there are any other cruddy-looking 'su' commands in -your crontab commands, you don't need them anymore: just find a good place -to put the `crontab.src' (or whatever you want to call it) file for that -user, put the cron commands into it, and install it using the `crontab' -command (probably with "-u USERNAME", but see the man page). - -If you run a 4.2-derived cron, you could of course just install your current -crontab in toto as root's crontab. It would work exactly the way your -current one does, barring the extra steps in installing or changing it. -There would still be advantages to this cron, mostly that you get mail if -there is any output from your cron commands. - -One note about getting mail from cron: you will probably find, after you -install this version of cron, that your cron commands are generating a lot -of irritating output. The work-around for this is to redirect all EXPECTED -output to a per-execution log file, which you can examine if you want to -see the output from the "last time" a command was executed; if you get any -UNEXPECTED output, it will be mailed to you. This takes a while to get -right, but it's amazingly convenient. Trust me. - |
