In one of my programs another process is called using the system command e.g.
lv_error = system("myproc");
where lv_error is declared as an int.
myproc would be returning 0 for success and 1 for failure. e.g.
if (success)
{
return(0);
}else{
return(1);
}
When the return code... (3 Replies)
Hey guys,
Hopefully a simple question for you.
In csh I have an alias that looks like:
alias ff 'find . -name \!* -print'
and can therefore perform a search for a file by typing:
ff filename
The same comand does not work in ksh
alias ff="find . -name \!* -print"
I get:
find:... (3 Replies)
I created a simple script and attempted to run it. All that the scrip contained was "ls -l".
At first I received the message "ksh: run_dir: not found"
I then tried typing "csh run_dir" This time the script worked.
typing echo $SHELL produced /bin/ksh
I would like to understand why this... (4 Replies)
Helloo...
I am not much familiar with python..I found this small script in python I even do not have python on my computer...can anyone help me out to convert this into ksh or sh..
PLEASE any help I will appreciate..
here is python code..
#!/usr/bin/env python
import random # Get a... (3 Replies)
Hi there,
in near future I have to change my work surrounding from HP UNIX to Windows Vista (great to get rid of old hardware :), but bad to loose UNIX :( ). As I heavily use KSH scripts to do my job, I was wondering, if there is any HowTo available, supporting me in re-writing the scripts to... (4 Replies)
I have this code using csh and want to convert it to ksh to include this thinking into my ksh scripts. while ( $iarg < $narg )
MATH iarg = $iarg + 1
set arg = $argv
set opt=` echo $arg | awk 'BEGIN { FS="=" } { print $1 }' `
set par=` echo $arg | awk 'BEGIN { FS="=" } {... (2 Replies)
Hi,
I have a csh:
set NODES = `cat $HOST_FILE`
set NODELIST = $TMPDIR/namd2.nodelist
echo group main >! $NODELIST
foreach node ( $NODES )
echo host $node >> $NODELIST
end
@ NUMPROCS = 2 * $#NODES
I am very frustrated to translate it to bash:
NODES = `cat... (3 Replies)
Hi, all of you!!!
I have this code and I won to build-in some more code.
I know this is a lot of code.
if ; then
if ; then
SYSROOT="$1"
S_SCRIPT="cd $1 ; ./etc/rc.sysinit 2>&1 &"
fi
else
... (22 Replies)
Hi!
I need to translate those line in csh (to initialise variable) into ksh construct.
Any help would be appreciated! I don't know how to replace them :(
Thanks
Hulu
setenv TestHul "$0 $*"
setenv JG `setenvp "JG" "" "$*"`
setenv A_1 `setenvp "A_1" "NA" "$*"`
Please use next time... (2 Replies)
Hi. Can somebody please explain the following lines of KSH code for me? The code checks all sub directories in a specific location which are numbered (E.g. test_01, test_02 ... etc.), then finds the one with highest number and extracts that number from the dir name into the variable num. I'd just... (9 Replies)
Discussion started by: user052009
9 Replies
LEARN ABOUT CENTOS
escape
escape(1) Mail Avenger 0.8.3 escape(1)NAME
escape - escape shell special characters in a string
SYNOPSIS
escape string
DESCRIPTION
escape prepends a "" character to all shell special characters in string, making it safe to compose a shell command with the result.
EXAMPLES
The following is a contrived example showing how one can unintentionally end up executing the contents of a string:
$ var='; echo gotcha!'
$ eval echo hi $var
hi
gotcha!
$
Using escape, one can avoid executing the contents of $var:
$ eval echo hi `escape "$var"`
hi ; echo gotcha!
$
A less contrived example is passing arguments to Mail Avenger bodytest commands containing possibly unsafe environment variables. For
example, you might write a hypothetical reject_bcc script to reject mail not explicitly addressed to the recipient:
#!/bin/sh
formail -x to -x cc -x resent-to -x resent-cc
| fgrep "$1" > /dev/null
&& exit 0
echo "<$1>.. address does not accept blind carbon copies"
exit 100
To invoke this script, passing it the recipient address as an argument, you would need to put the following in your Mail Avenger rcpt
script:
bodytest reject_bcc `escape "$RECIPIENT"`
SEE ALSO avenger(1),
The Mail Avenger home page: <http://www.mailavenger.org/>.
BUGS
escape is designed for the Bourne shell, which is what Mail Avenger scripts use. escape might or might not work with other shells.
AUTHOR
David Mazieres
Mail Avenger 0.8.3 2012-04-05 escape(1)