I'm running Debian on a ThinkPad X1/2G and all seems to be running well.
However, it's got a SSD that needs the trim command run at regular intervals.
I'm implementing this using cron and a shell script, as recommended.
The cron job entries are as follow:
And the script is:
I seem to be having a problem getting the parameters from cron
to be recognised by fstrim as parameters in the shell script even though bash
seems to recognise the parameters.
If I run the script './trim /' as root at the command line it works as expected with
bash and fstrim recognising the variables.
Other things tried...
Hard-coding the parameters seems to work.
Checked permissions on script 0755.
Can anybody help me out in sending parameters from sql*plus script to unix shell script without using flat files..
Initially in a shell script i will call sql*plus and after getting some value from some tables, i want that variable value in unix shell script. How can i do this?
Please tell me... (2 Replies)
I want to call script2 from script1 passing parameters. I want to read the parameters list in script1, check the local directory (for example - lpath1|lpath2|lpath3|lpath4|lpath5|) for the existance of files and set the` lcount` to the number of files in this folder (`... (2 Replies)
Hello,
On Aix 5.2, we changed the parameters tcp_keepinit, tcp_keepintvl and tcp_keepidle with the no command.
tunrestore -R is present in inittab
in the directory /etc/tunables we can clearly see the inclusion of parameters during reboot, including the file lastboot.log
... (0 Replies)
Hello,
I have this awk script that I want to execute by passing parameters through a shell script.
I'm a little confused. This awk script removes duplicates from an input file.
Ok, so I have a .sh file called rem_dups.sh
#!/usr/bin/sh... (4 Replies)
Hello,
I extracted a list of files in a directory with the command ls . However this is not my computer, so the ls functionality has been revamped so that it gives the filesizes in front like this :
This is the output of ls command : I stored the output in a file filelist
1.1M... (5 Replies)
I have a requirement where I need to process both options and parameters.
command line call
ie xxx.ksh -sid TEST1 -search_str LOCKED user1 user2 .....
I am using the following peice of code but I am usure how I can loop through all my parameters user1, user2, ... Note at the minium... (2 Replies)
Hello Experts,
I have a requirement to pass some parameters to Linux cron tab.
For ex: My default cron entry looks like this as below:
-------------------------------
55 10 * * --... (7 Replies)
Hi All,
I have a script which intends to create as many variables at runtime, as the number of parameters passed to it. The script needs to save these parameter values in the variables created and print them
abc.sh
----------
export Numbr_Parms=$#
export a=1
while
do
export... (3 Replies)
I need to write a shell script which send an alert if a particular script scheduled in cron is not triggered.
My concern is that particular script which is scheduled in crontab, runs at night but it requires a file from upstream system as a feed prior to execution. it waits for that file upto 4... (2 Replies)
Discussion started by: Ankit Srivastav
2 Replies
LEARN ABOUT MOJAVE
crontab
CRONTAB(1) BSD General Commands Manual CRONTAB(1)NAME
crontab -- maintain crontab files for individual users (V3)
SYNOPSIS
crontab [-u user] file
crontab [-u user] { -l | -r | -e }
DESCRIPTION
The crontab utility is the program used to install, deinstall or list the tables used to drive the cron(8) daemon in Vixie Cron. Each user
can have their own crontab, and they are not intended to be edited directly.
(Darwin note: Although cron(8) and crontab(5) are officially supported under Darwin, their functionality has been absorbed into launchd(8),
which provides a more flexible way of automatically executing commands. See launchctl(1) for more information.)
If the /usr/lib/cron/cron.allow file exists, then you must be listed therein in order to be allowed to use this command. If the
/usr/lib/cron/cron.allow file does not exist but the /usr/lib/cron/cron.deny file does exist, then you must not be listed in the
/usr/lib/cron/cron.deny file in order to use this command. If neither of these files exists, then depending on site-dependent configuration
parameters, only the super user will be allowed to use this command, or all users will be able to use this command. The format of these
files is one username per line, with no leading or trailing whitespace. Lines of other formats will be ignored, and so can be used for com-
ments.
The first form of this command is used to install a new crontab from some named file or standard input if the pseudo-filename '-' is given.
The following options are available:
-u Specify the name of the user whose crontab is to be tweaked. If this option is not given, crontab examines ``your'' crontab, i.e.,
the crontab of the person executing the command. Note that su(1) can confuse crontab and that if you are running inside of su(1) you
should always use the -u option for safety's sake.
-l Display the current crontab on standard output.
-r Remove the current crontab.
-e Edit the current crontab using the editor specified by the VISUAL or EDITOR environment variables. The specified editor must edit
the file in place; any editor that unlinks the file and recreates it cannot be used. After you exit from the editor, the modified
crontab will be installed automatically.
FILES
/usr/lib/cron/cron.allow
/usr/lib/cron/cron.deny
DIAGNOSTICS
A fairly informative usage message appears if you run it with a bad command line.
SEE ALSO crontab(5), compat(5), cron(8), launchctl(1)STANDARDS
The crontab command conforms to IEEE Std 1003.2 (``POSIX.2''). The new command syntax differs from previous versions of Vixie Cron, as well
as from the classic SVR3 syntax.
AUTHORS
Paul Vixie <paul@vix.com>
BSD December 29, 1993 BSD