Script to clear filesystem Post: 302997273

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Operating Systems HP-UX Script to clear filesystem Post 302997273 by MadeInGermany on Wednesday 10th of May 2017 02:14:51 PM

05-10-2017

Registered User

Your script does not work for several reasons.
The du -x ... is run in the current directory.
root's home directory is / so it takes very long to traverse all the files. Then, the du output consists of numbers and directories. The for loop cycles through all of them. The code in the loop is run over and over again.
Now you know why it takes so long.
--
Once upon a time I created a script that rotates HP-UX system log files.
Useful on systems that are not regularly rebooted.
It is run by the crontab entry:

Code:

10 3 1 * * /usr/lib/newsyslog

And the executable /usr/lib/newsyslog looks like this

Code:

#!/bin/sh
# idea from Sun's newsyslog script
# HP-UX version
#
MIN_BLOCKS=2048 # rotate if >1MB
MAX_HIST=3 # .0 through .3
#
# access rotated files with
# last -f /var/adm/wtmp.0
# last -Xf /var/adm/wtmps.0
# lastb -f /var/adm/btmp.0
# lastb -Xf /var/adm/btmps.0
#
pgrepx(){
UNIX95=1 ps -C "$1" -o pid=
}
#
testlog(){
 for _i do
  [ -s "$_i" ] &&
   [ -n "`find "$_i" -prune -type f -size +"$MIN_BLOCKS"`" ] &&
   return
 done
}
#
rotatelog(){
 log=$1
 method=${2:-mv}
 i=$MAX_HIST
 while [ $i -gt 0 ]
 do
  j=`expr $i - 1`
  test -f $log.$j && mv $log.$j $log.$i
  i=$j
 done
 $method $log $log.0
 > $log
}
#
umask 22
LOGS="
/var/adm/syslog/syslog.log
/var/adm/syslog/mail.log
"
action=""
for log in $LOGS
do
 if testlog $log
 then
  rotatelog $log "mv"
  action=1
 fi
done
[ -n "$action" ] &&
 chmod 644 /etc/syslog.pid &&
 kill -HUP `cat /etc/syslog.pid`
#
LOGS="
/var/opt/omni/log/inet.log
/var/opt/omni/log/debug.log
"
action=""
for log in $LOGS
do
 if testlog $log
 then
  rotatelog $log "mv"
  action=1
 fi
done
#
umask 2
LOGS="
/var/adm/wtmps
/var/adm/wtmp
/var/adm/btmps
/var/adm/btmp
/var/adm/sulog
/var/adm/lp/lpd.log
"
# rotate all non-zero files or none
action=""
if testlog $LOGS
then
 for log in $LOGS
 do
  if [ -s $log ]
  then
   rotatelog $log "cp -p"
   action=1
  fi
 done
fi
#
# finally rotate the cron logs
umask 22
LOGS="
/var/adm/cron/log
"
action=""
cronstart=/sbin/init.d/cron
[ -f $cronstart ] && {
for log in $LOGS
do
 if testlog $log
 then
  rotatelog $log "mv"
  action=1
 fi
done
# restart cron a bit time-shifted
[ -n "$action" ] &&
 sleep 1 &&
 sh $cronstart stop &&
 sleep 1 &&
 sh $cronstart start
}
#

If you have understood it, you can add more things to the LOGS= strings.

Last edited by MadeInGermany; 05-10-2017 at 04:57 PM..

MadeInGermany

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LEARN ABOUT OSF1

llconvert

llconvert(8)						      System Manager's Manual						      llconvert(8)

NAME

       llconvert - Modify lastlog records from DIGITAL UNIX releases 4.0x and prior to new format

SYNOPSIS

       /usr/lbin/llconvert [-vnrp?h] input_file [output_file]

OPTIONS

       Restore new format to old format.  Verbose. Display lines while converting.  Do not preserve contents of input file.  Formatted print only.
       Do not convert. (May be used with the -r option).  Display usage message.

DESCRIPTION

       The llconvert command reads records from the lastlog file, such as /var/adm/lastlog, and converts the record format to the  updated  struct
       lastlog	format.  If  no  output file is specified or if the output file path is identical to the input file path, llconvert makes a backup
       copy of the original input file using the following algorithm: If filename.orig exists.	Where n is a unique number.

       The llconvert command attempts to detect an input file that is in the wrong format (for example, input file is already a new format  file).
       A warning message is issued in this case, but conversion continues.

RETURN VALUES

       Success.  An error occurred.

EXAMPLES

       To convert an old format accounting file to the new format: llconvert /var/adm/lastlog.prev

	      Upon  completion	of  this  command,  /var/adm/lastlog.prev  will have been converted to the new format. The original /var/adm/last-
	      log.prev is renamed to:

	      /var/adm/lastlog.prev.orig To convert a lastlog file in new format to the old format: llconvert -r  /var/adm/lastlog  /var/adm/last-
	      log.old

FILES

       Lastlog header file that defines the format for the lastlog file.  The active lastlog file.

SEE ALSO

       Commands: finger(1)

																      llconvert(8)

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