Reading a file with while into variable and using in another process
I would appreciate some help, please.
I have a file cutshellb.txt, which contains four report names (but it could be any number from 1 to x. The report suffix is not necessarily consecutive:
report3785
report3786
report3787
report3788
I have a shell script which attempts to read the names and use them as a parameter in another script to run a mail package:
The script contains:
I would appreciate some pointers - even if it is just that this is not possible.
I found this format MYPRT=$(`echo "$line"`) on a website which suggested that there are difficulties with passing variables between parent and child processes with pipes especially within ifs and whiles.
Last edited by pludi; 11-06-2009 at 01:43 PM..
Reason: code tags, please...
I am missing something here, I have a file which contains only one line and that is either a number or character string. I am trying to read the file and assign that value to a variable and here it seems I am missing something and not getting the expected results... Here is the code :
#!/bin/ksh... (2 Replies)
hi,
I'm using HP unix tru64 & Win XP.
i'm download a file from winxp to unix using ftp.
how to know whether a remote file is currently being used by the process or not? (my loaction unix server) (7 Replies)
Hi,
Here is the output of lpstat. I would like to read value of Queue which is(abxxxxb1)and status that is DOWN in first line. i dont care what is in second line. any one can help me.thanks
Queue Dev Status Job Files User PP % Blks Cp Rnk
------- ----- ---------... (5 Replies)
Hi,
I am doing :
while read line
do
printf "%s\n" ${line}
done <datafile.txt
but I am not getting each single line from the data file assigned to the variable line (but only tokens/fields at a time). I also tried while IFS= read -r lineI want the whole line assigned or read into the... (2 Replies)
Hi,
I have a situation where I need to read a variable from another file. But the problem is that the variable in the other file is starting with $.
E.g.
file1:
$var1=out
temp_ss.sh:
. file1
echo "Print : $var1"
It works fine if the file1 is having var1=out (note that it is... (6 Replies)
Hello,
I need to read a variable value from script.
Below is the scenario
I am reading a value from an external file say a.txt
a.txt:
Jan
Feb
Mar
I need the corresponding value of the months in in numerics such as Jan -->1,
Feb-->2 etc.
I have this mapping in another file... (1 Reply)
HI all,
I have a parameter file with entries like
$$Name =Abhinav
$$CUTOFF_DATE = 11/11/2209
I am reading a variable from this file using a awk command like :
var2=`awk -F"" "/CUTOFF_DATE/{f=$1;}{print f;}" InputFIleName`
but facing an error like
awk: cmd. line:1:... (3 Replies)
Hi folks,
I'm using bash and would like to do the following. I would like to read some values from the file and store it in the variable and use it.
My file is 1.txt and its contents are
VERSION=5.6
UPDATE=4
I would like to read "5.6" and "4" and store it in a variable in shell... (6 Replies)
I need to know how the the string constant from Input File should be read and provide as input data for the script .
INPUT FILE
CONST VARIABLE
myname=/root/dir/syslog/myname1
myname=/root/dir/syslog/myname2
myname=/root/dir/syslog/myname3
urname=/root/dir/syslog/urname1... (6 Replies)
Hello,
I have a text file named "foreach.txt" which reads like ---
foreach cal ( 1 2 3 4 5 )
I am using a simple script which looks like ---
#!/bin/tcsh
foreach cal (1 2 3 4 5)
echo "$cal"
end
Is it possible to modify the script in such a way that instead of writing
foreach cal (1... (6 Replies)
Discussion started by: Indra2011
6 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)