12-03-2007
formatting a file using shell script
Hi
I have to do the following.I have to format a file test.t
The contents are
# Header 1231
xyz
asdf
asdapsdcsd
//string1 = "pqrs"
//string1 = "abcd"; //info
//string1 = "*pqrs"; //add
string1 = "#123"; //sub
//string1 = "#1234567890"
data = check(string1)
//string1 = "#1234567890"
//string2 = "pqrs"
//string2 = "abcd"; //info
//string2 = "*pqrs"; //add
string2 = "#123"; //sub
print "abcd ";
return xy
I want to modify this as
# Header 1231
xyz
asdf
asdapsdcsd
string1 = "#987";
data = check(string1)
string2 = "#21 43 65 87 59";
print "abcd ";
return xy
The requirement is I have to remove all the lines starting with string1 or //string1 or string2 or //string2 and add two new lines
string1 = "#987"; //mult and string2 = "#21 43 65 87 59"; //sub
in its place. How do i do that using a shell script?
"#987 is a default string , but 21 43 65 87 59 is input to the file as
1234567895,ie, if the script is test.sh, i would call that as
./test.sh 1234567895. and i should get this output.
Please help..
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LEARN ABOUT ULTRIX
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)