Hi all,
Does anyone know how to ammend the .cshrc file in $HOME for your session to display the path as part of the command line? So that I dont need to keep on typing pwd to see where I am?
thanks
Ocelot (2 Replies)
Hi
I really hope someone can help with the below question.
Lets say that I have a file called output.txt and I want to display all of the lines which contain the word ‘disconnect'. I know that this can easily be obtained by using the following command:
grep -i disconnect output.txt
However,... (6 Replies)
Hi,
I have a file split.txt with the following contents
one
two
three
four
five
Suppose if i want to display contents of line 3, I know this could be achieved using the command
sed -n '3p' split.txt
But I need the line number to be decided dynamically like
a=3
sed -n '$ap'... (2 Replies)
Within AWK, how do you display a field of NR? Here's my code:
awk '(NR>1) && (P1=$1-w)>=100000 {print "increase of" " " P1*.0000179," " "kW at" " " 'NR*60/431900' " " "minutes" "\n" "change from" " " 'NR-10($1)' " " "kW to" " " 'NR+70($1)' "\n"}{w=$1}' filename
I can change NR and print... (3 Replies)
Hello all
I have a query (SQL) that returns a rather long field from an Oracle database. The field in question is defined on 400 characters but all these 400 cannot be displayed by the echo command. Thus when I launch the following command:
echo "SELECT FIELD01 FROM TABLE_NAME;" | sqlplus -s... (9 Replies)
Hi all - I'm completely stumped by a script I'm working on...
The short version is I have a file called 'lookup' and in it are hundreds of names (first and last). I have a script that basically allows the user to enter a name, and what I need to have happen is something like this:
Record... (8 Replies)
Hi,
I have an array, that works well. But, I want to have it display every other line. Like so, 1, 3, 5, 7, etc, etc.
Here is the relevant code:
I'm sorry for the pastebin link. For some reason, I can't get the code to format properly with the code tags.
code tags work fine... everyone... (4 Replies)
Discussion started by: ignatius
4 Replies
LEARN ABOUT DEBIAN
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)