is it possible to escape the \ character in sed?
right now I'm trying to replace all occurances of \ with \\
sed \"s|test|test_replacement|g\" file1 > output; #this works fine
sed \"s|\\|\\\|g\" file1 > output; #this generates the following error:
sed: -e expression #1, char 17:... (1 Reply)
I want to replace a string which contains "/" in vi but what is the escape character for forward slash?
e.g. I have a text file with the contents below and I want to replace "/Top/Sub/Sub1" with "ABC".
/Top/Sub/Sub1
The replace command I am using is ... (4 Replies)
Hi
I'm trying to split a dir listing
eg
/home/foo1/foo2
I'm using ksh
I've tried
dir=/home/foo1/foo2
splitit=`echo $dir | awk -F '\/' '{print $1}'`
echo $splitit
nothing is output!
I have checked the escape character. The only one I have found is \
BTW `pwd` | awk -F \/... (8 Replies)
Hi ,
I want to change space to ' in my script.
I tried doing this,
sed 's/ /\'/g' filename
but i could not get it.
can some one help me please.
Thanks,
Deepak (4 Replies)
Hello,
I wanted to display command with echo like this in tcsh.
output should be "//'test.test1.test2'"
(" at both ends also required in output)
Please help me. (1 Reply)
Hello experts
I am trying to write a shell script which will add ' ' to a unix variable and then pass it to oracle for inserting to a table.
I am running the script as root and I have to do a su -c .
The problem is the character ' is not recognised inside sed even after adding escape... (1 Reply)
I want to know how to, given a string like W87151WR71C, if the 4th and 5th character (in this case 15) are greater than 45, then to add 1 to the 3rd character (in this case 7) and assign the revised string the variable name MODSTRING.
Thanks in advance. This is ultimately to grab info from... (6 Replies)
Hi all,
I've got a problem with sed. Want to use it to add escape character \ before $ and ' symbols so
condition='1'$some will become condition=\'1\'\$some
echo "condition='1'$some" | sed 's/\($\)/\\\1/g'
is not working properly. Can somebody help me with this please?
Regards,... (7 Replies)
i have string as below
str=".<date>"
in which i need to replace < with /< , when i tried with sed , got the output.
--> echo $str | sed 's/</\\</g'
.\<date>
when i tried to assign it to a variable , i am not getting the same
--> a=`echo $str | sed 's/</\\</g'` ; echo $a... (4 Replies)
Hi,
How to use * in call to pl/sql block from shell script?
The line "select * from" is causing all files and directiores to show up in email notification but if I give all column names then it works,
Please let me know how to use '*' instead of giving all column names, in other wirds how to... (2 Replies)
Discussion started by: sandy162
2 Replies
LEARN ABOUT V7
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)