Hi,
i want to use grep to extract users with at least 4 characters in their username, i've tried who | grep \{4,\} but thats not working!!!!!!
Thanks (4 Replies)
Hi there,
I need to split one huge file into separate files if the condition is fulfilled according to that the position between 97 and 98 matches with “IT” at the segment MAS. There is no delimiter file is fix-width with varous line length.
Could you please help me how I do split the file... (1 Reply)
Hi ,
a:) i have configuration file with pattren
<Range start no>,<Range end no>,<type of records to be extracted from the data file>,<name of the file to store output>
eg:
myfile.confg
9899000000,9899999999,DATA,b.dat
9899000000,9899999999,SMS,a.dat
b:) Stucture of my data file is... (3 Replies)
Here is a data file, which I believe is in YAML. I am trying to retrieve just the 'addon_domains" section, which doesnt seem to be as easy as I had originally thought. Any help on this would be greatly appreciated!! I have been trying to do this in awk and mostly bash scripting instead of perl... (3 Replies)
I'm extremely new to scripting and linux in general, so please bear with me. The class I'm taking gives virtually no instruction at all, and so I'm trying to learn everything off the web.
Anyway, I'm trying to extract characters that follow after a specific pattern ( '<B><FONT FACE="Arial">' ) but... (3 Replies)
I want to extract the string TC from the string TC10, the string can have any characters
out of .
I used the following code but didnt get the right output. Please guide
nuc=match(val,/*/)
seq=substr(val,RSTART,RLENGTH)
---------- Post updated at 09:40 PM ---------- Previous update was... (0 Replies)
Im trying compare values between files and if they match I want to extract some characters in between those values for many files. They are in two directories and have the name filename but one ends in .enr. They look like this.
cat bat.1.enr
name,start,end
bat.1,231, 234
and another... (5 Replies)
Discussion started by: verse123
5 Replies
LEARN ABOUT XFREE86
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)