I've a script to do some snapshots but the time it does so is very different...
once i got a snapshot under 1 sec, on the other hand it took 3 sec, but nothing else changed, i didnt even move the cursor or something.
I put the script on a ramdisk and its faster, but still swing from under 1... (1 Reply)
Pl help to me to write the below code in a simple way ...
i suupose to use this code 3 to 4 places in my makefile(gnu) ..
****************************************
@for i in $(LIST_A); do \
for j in $(LIST_B); do\
if ;then\
echo "Need to sign"\
echo "List A = $$i , List B =$$j"\
... (2 Replies)
Hi,
I have to assign a value for a varaiable based on a Input. I have written the below code:
if
then
nf=65
elif
then
nf=46
elif
then
nf=164
elif
then
nf=545
elif
then
nf=56
elif
then (3 Replies)
Here is my code. What it does is it reads an input file (input.txt which contains roughly 2,000 search phrases) and searches a directory for files that contains the search phrase. The directory contains roughly 1900 files and 84 subdirectories. The output is a file (output.txt) that shows only the... (23 Replies)
Hi,
I need a shell script to determine if a no. is either even, greater than 4, less than 8
SHELL : ksh
OS : RHEL 6
this is the if block of the script
mod=`expr $num % 2`
if || ||
then
echo "No. is either even or greater than 4 or less than 8"
fi
this code works... (2 Replies)
Hello,
I'm wondering if there is a quicker way of doing this.
Here is my mv script.
d=/conversion/program/out
cd $d
ls $d > /home/tempuser/$$tmp
while read line ; do
a=`echo $line|cut -c1-5|sed "s/_//g"`
b=`echo $line|cut -c16-21`
if ;then mkdir... (13 Replies)
Hi guys,
I feel a bit comfortable now doing bash scripting but I am worried that the way I do it is not optimized and I can do much better as to how I code.
e.g.
I have a whole line in a file from which I want to extract some values.
Right now what I am doing is :
STATE=`cat... (5 Replies)
Hi All,
I have written a new script to check for DB space and size of dump log file before it can be imported into a Oracle DB.
I'm relatively new to shell scripting.
Please help me optimize this script further. (0 Replies)
Discussion started by: narayanv
0 Replies
LEARN ABOUT REDHAT
smrsh
SMRSH(8) System Manager's Manual SMRSH(8)NAME
smrsh - restricted shell for sendmail
SYNOPSIS
smrsh -c command
DESCRIPTION
The smrsh program is intended as a replacement for sh for use in the ``prog'' mailer in sendmail(8) configuration files. It sharply limits
the commands that can be run using the ``|program'' syntax of sendmail in order to improve the over all security of your system. Briefly,
even if a ``bad guy'' can get sendmail to run a program without going through an alias or forward file, smrsh limits the set of programs
that he or she can execute.
Briefly, smrsh limits programs to be in a single directory, by default /etc/smrsh, allowing the system administrator to choose the set of
acceptable commands, and to the shell builtin commands ``exec'', ``exit'', and ``echo''. It also rejects any commands with the characters
``', `<', `>', `;', `$', `(', `)', `
' (carriage return), or `
' (newline) on the command line to prevent ``end run'' attacks. It allows
``||'' and ``&&'' to enable commands like: ``"|exec /usr/local/bin/procmail -f- /etc/procmailrcs/user || 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 ``/etc/smrsh/vacation''.
System administrators should be conservative about populating the /etc/smrsh directory. Reasonable additions are vacation(1), procmail(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 /etc/smrsh
directory. Note that this does not restrict the use of shell or perl scripts in the sm.bin directory (using the ``#!'' syntax); it simply
disallows execution of arbitrary programs.
FILES
/etc/smrsh - directory for restricted programs
SEE ALSO sendmail(8)
$Date: 2002/04/25 13:33:40 $ SMRSH(8)