The shell script:

for fle in `ls *.msg`
do
    # copy file first so as can keep permissions and ownership identical
    cp -p $fle test_$fle
    # replace entire 2nd line with a new 2nd line
    sed -f t.sed $fle > test_$fle
done

Which calls this sed command file, named t.sed:

2c\
\To: dummy.email@me.com

The result is that the 2nd line in each file reads:

To: dummy.email@me.com

On HP blade servers:

/usr/sbin/hpacucli controller all show status
/usr/sbin/hpacucli controller slot=0 logicaldrive all show

On other servers:

cat /proc/mdstat

So it is important to not use 01.* times in your cron entries, for anything which runs on a Sunday.

Newer versions of unix try to deal intelligently with the time change. They attempt to run the Spring 01.* crons at a suitable time after 2am, and make sure not to run Autumn 01.* crons twice.

You can see what the behaviour of your version of unix is by looking at ‘man cron’ and ‘man crontab’. If they contain information like the below, then they attempt to deal intelligently with time changes, if not, not.  The below is from ‘man cron’ in current HP-UX:

Spring and Autumn Time Transitions

On the days of daylight savings (summer) time transition (in time zones and countries where daylight savings time applies), cron schedules commands differently from normal.

In the following description, an ambiguous time refers to an hour and minute that occurs twice in the same day because of a daylight savings time transition (usually on a day during the Autumn season).  A nonexistent time refers to an hour and minute that does not occur because of a daylight savings time transition (usually on a day during the Spring season).  DST-shift refers to the offset that is applied to standard time to result in daylight savings time.  This is normally one hour, but can be any combination of hours and minutes up to 23 hours and 59 minutes (see tztab(4)).

When a command is specified to run at an ambiguous time, the command is executed only once at the first occurrence of the ambiguous time.

When a command is specified to run at a nonexistent time, the command is executed after the specified time by an amount of time equal to the DST-shift.  When such an adjustment would conflict with another time specified to run the command, the command is run only once rather than running the command twice at the same time.

Commands that are scheduled to run during all hours (there is a * is in the hour field of the crontab entry) are scheduled without any adjustment.

Britain, and the rest of Europe, always switch 1-2am, but other countries, including parts of the US, can switch at different times, so you may need to watch a different time range there.

Ftp access is normally controlled by the ‘vsftpd’ line, e.g.:

vsftpd: 138.134.116. 138.134.117.

That would allow ftp connections from IP addresses like 138.134.116.x and 138.134.117.x.

If your IP address is not in the allow list, ftp attempts will fail with an error like this:

421 service not available.
Connection closed by remote host.

Domain names can also be specified in these files as well as IP addresses.

Changes take effect immediately, there is no need to restart any services.

dsmc

or, for more complex configurations, specify an optfile:

dsmc -optfile=/opt/tivoli/tsm/client/ba/bin/dsm-ora.opt

List backup files:

tsm> q backup "/oracle/*" -subdir=yes -inactive

Restore:

tsm> restore "/oracle/mydb/*" /oracle/ -subdir=yes -pick

Note how the second mention of directory path ommits the lowest directory.

tsm> +   # to select all
tsm> o   # ok, start restore

Old versions of unix find do not have the -delete option, so instead:

#  Delete files older than 15 minutes
find /ORA_DISK/redoarch/ -name 'arch_*.dbf' -mmin +15 -exec rm {} \;

#Delete files older than 2 days
50 8 * * * find /ORA_DISK/redoarch/ -name 'arch_*.dbf' -mtime +2 -exec rm {} \;

ps -ef | grep dsm  #here look to see if 'optfile' is set
cd /mydir
dsmc -optfile=/opt/tivoli/tsm/client/ba/bin/dsm-ora.opt
tsm> restore /mydir/*.dbf -inactive -pick
tsm> 1   #here choose which file number you want
tsm> 2   #choose another file if needed
tsm> o   #o='ok'
tsm> quit

You should specify an ‘optfile’ at line 3 only if you saw it in the output of line 1.

Other useful options:

List backup files:

tsm>q backup "/opt/fc-lun1/*" -inactive -subdir=yes

Restore (note how second mention directory name is shorter):

tsm> restore "/opt/fc-lun1/MYDB/mydb/*" /ORA_DISK/MYDB/infprod/ -subdir=yes –pick

Select all files:

tsm> +   # to select all files

du -sk * | sort -n

I often put it into a function so I can call it quickly:

g () {
  du -sk * | sort -n
}

df -h (df -k on old machines) shows the filesystem disk utilisation.