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Full Discussion: Bad Substitution
Top Forums Shell Programming and Scripting Bad Substitution Post 302106273 by D_Redd74 on Wednesday 7th of February 2007 02:27:26 PM
Old 02-07-2007
Question Bad Substitution
Need Help... I am getting a bad substitution error on my script on a Solaris Server. However the script has been proven to work on HPUX and Solaris servers...


#!/usr/bin/sh
#
# Set the location of the tzupdater.jar file
#
JAR=/tmp/tzupdater.jar # <<<<< UPDATE THIS LINE >>>>>
#
# Clear out log files if they exist

if [[ -f /tmp/${0##*/}.all_javas ]]; then
rm -f /tmp/${0##*/}.all_javas
fi
if [[ -f /tmp/${0##*/}.old_javas ]]; then
rm -f /tmp/${0##*/}.old_javas
fi
if [[ -f /tmp/${0##*/}.cur_javas ]]; then
rm -f /tmp/${0##*/}.cur_javas
fi

# Find all the files named java on the system
# and save the list in a log of all java files
find / -fstype nfs -prune -o -fstype autofs -prune -o -name java -type f -print -o -name java -type l -print | tee /tmp/${0##*/}.all_javas | \
while read JAVA; do
exec 2>/dev/null # Ignore error messages
$JAVA -version >/dev/null 2>/dev/null # Check how java responds
if (( $? == 0 )); then # If RC=0, it is vaid
# Find out the version of Java this is
VERSION=$($JAVA -version 2>&1 | awk 'NR==1 {print substr($3,4,1)}')
if (( $VERSION > 3 )); then
# If the version is greater than 1.3, go ahead and update it
print "$($JAVA -version 2>&1 | awk 'NR==1 {print $3}')\t$JAVA" >> /tmp/${0##*/}.cur_javas # Save list of current Javas
# Check whether this java has been updated or not
$JAVA -jar $JAR -t >/dev/null 2>&1
if (( $? > 0 )); then # If not updated, update it
print "Updating $JAVA"
$JAVA -jar $JAR -u
else # Otherwise, print a message already updated
print "$JAVA already updated"
fi
else # This cmd is an old version of Java
print "$($JAVA -version 2>&1 | awk 'NR==1 {print $3}')\t$JAVA" >> /tmp/${0##*/}.old_javas # Save list of old Javas
fi
fi
done
#
 

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LEARN ABOUT DEBIAN

smrsh

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

NAME

       smrsh - restricted shell for sendmail

SYNOPSIS

       smrsh -c command

DESCRIPTION

       The smrsh program is intended as a replacement for sh for use in the ``prog'' mailer in sendmail(8) configuration files.  It sharply limits
       the commands that can be run using the ``|program'' syntax of sendmail in order to improve the over all security of your system.   Briefly,
       even  if  a  ``bad guy'' can get sendmail to run a program without going through an alias or forward file, smrsh limits the set of programs
       that he or she can execute.

       Briefly, smrsh limits programs to be in a single directory, by default /usr/adm/sm.bin, allowing the system administrator to choose the set
       of  acceptable commands, and to the shell builtin commands ``exec'', ``exit'', and ``echo''.  It also rejects any commands with the charac-
       ters ``', `<', `>', `;', `$', `(', `)', `
' (carriage return), or `
' (newline) on the command line to prevent ``end run''  attacks.	It
       allows ``||'' and ``&&'' to enable commands like: ``"|exec /usr/local/bin/filter || exit 75"''

       Initial	pathnames  on programs are stripped, so forwarding to ``/usr/ucb/vacation'', ``/usr/bin/vacation'', ``/home/server/mydir/bin/vaca-
       tion'', and ``vacation'' all actually forward to ``/usr/adm/sm.bin/vacation''.

       System administrators should be conservative about populating the sm.bin directory.  For example, a reasonable  additions  is  vacation(1),
       and  the  like.	No matter how brow-beaten you may be, never include any shell or shell-like program (such as perl(1)) in the sm.bin direc-
       tory.  Note that this does not restrict the use of shell or perl scripts in the sm.bin directory (using the ``#!'' syntax); it simply  dis-
       allows  execution  of  arbitrary  programs.   Also,  including mail filtering programs such as procmail(1) is a very bad idea.  procmail(1)
       allows users to run arbitrary programs in their procmailrc(5).

COMPILATION

       Compilation should be trivial on most systems.  You may need to use -DSMRSH_PATH="path" to adjust the default search  path  (defaults	to
       ``/bin:/usr/bin:/usr/ucb'') and/or -DSMRSH_CMDDIR="dir" to change the default program directory (defaults to ``/usr/adm/sm.bin'').

FILES

       /usr/adm/sm.bin - default directory for restricted programs on most OSs

       /var/adm/sm.bin - directory for restricted programs on HP UX and Solaris

       /usr/libexec/sm.bin - directory for restricted programs on FreeBSD (>= 3.3) and DragonFly BSD

SEE ALSO

       sendmail(8)

							   $Date: 2004/08/06 03:55:35 $ 						  SMRSH(8)
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