Gentoo Archives: gentoo-user

From: Tanstaafl <tanstaafl@×××××××××××.org>
To: gentoo-user@l.g.o
Subject: Re: [gentoo-user] Using date/time variables in cronjobs?
Date: Sun, 05 May 2013 18:08:19
Message-Id: 51869FF6.3000308@libertytrek.org
In Reply to: [gentoo-user] Using date/time variables in cronjobs? by Tanstaafl
1 Ok, some of those variables were wrong (copy pasted from my first
2 brain-dead attempt)...
3
4 I now have a rudimentary bash script with contents:
5
6 #!/bin/bash
7 BACKUP_DIR="/home/user/mypg_backups"
8 PGUSER="superuser"
9 PGtt=`date '+%H:%M'`
10 PGhr=`date '+%H'`
11 PGdd=`date '+%a'`
12 PGmm=`date '+%b'`
13 PGyy=`date '+%Y'`
14 /usr/bin/pg_dumpall -U $PGUSER -o | gzip >
15 $BACKUP_DIR/$PGyy/$PGmm/$PGdd/pg_all-$PGtt.gz
16
17 Running this results in:
18
19 # ./mypg_pgdumpall.sh
20 ./mypg_pgdumpall.sh: line 10:
21 /home/user/mypg_backups/2013/May/Sun/pg_all-13:54.gz: No such file or
22 directory
23
24 So, it is expanding the variables properly, but apparently won't
25 automatically create the directories? Is there some kind of flag I can
26 add to the command to do that?
27
28 Running the bare command without the variables works as expected, so it
29 is just a matter of getting the directories auto created if they don't
30 already exist.
31
32 Is there a reasonably easy way of doing this?
33
34 On 2013-05-05 12:56 PM, Tanstaafl <tanstaafl@×××××××××××.org> wrote:
35 > Ok, another little thing...
36 >
37 > Is there a simple way to use date/time variables in cronjobs? Or do I
38 > need to use a bash script for this? I prefer simple, and just using the
39 > variables directly in the cron command would be easier if it works, so
40 > figured I'd ask first...
41 >
42 > I'm trying to schedule a dump of my databases like so:
43 >
44 > pg_dumpall --username=username -o -f
45 > /home/user/mypg_backups/hourly/\%y/\%m/\%d/\%t.sql.gz
46 >
47 > But trying to run this command fails with:
48 >
49 > pg_dumpall: could not open the output file
50 > "/home/user/mypg_backups/hourly/%y/%m/%d/%t.sql.gz": No such file or
51 > directory
52 >
53 > Tried escaping the variables and not, same error...
54 >

Replies

Subject Author
Re: [gentoo-user] Using date/time variables in cronjobs? Neil Bothwick <neil@××××××××××.uk>
Re: [gentoo-user] Using date/time variables in cronjobs? Tanstaafl <tanstaafl@×××××××××××.org>