the problem is while replacing the old string with new one with the help of SED i am unable to replace the special characters with new strings. how can i do that?
i dont want the user to be given the trouble to write '\' before every special characters like * , . , \ , $ , &.
sed... (4 Replies)
Hi,
I am writing a Perl script that reads in many lines, if a line meets the criteria I want to edit, it. For example, the script will return the following example line... test=abc123
All I want to do is strip off the "test=" and just be left with the abc123. In my script I can easily... (3 Replies)
Hi All,
How to remove a box like special character which appears at the end of a string/line/record. I have no clue what this box like special character is. It is transparent square like box. This appears in a .DAT file at the end of header.
I'm to compare a value in header with a parameter.... (16 Replies)
I would like to remove characters from column 7 so that from an input file looking like this:
>HWI-EAS422_12:4:1:69:89 GGTTTAAATATTGCACAAAAGGTATAGAGCGT U0 1 0 0 ref_chr8.fa 6527777 F DD
I get something like that in an output file:
... (13 Replies)
ps -eaf | grep “oracleTRLV (LOCAL=NO)” | while read ora_proc
do
echo $ora_proc
done
I would like to modify the above shell so that if character 13 and 14 equal "12" to do something.
Sorry I'm new to shell:( (14 Replies)
Hi,
I am beginner to Shell Scripting.
I have a String like this "testabcdef", i need the first character as it is and the remaining character should be replaced by the the '*' character. e.g(t***********)
PLZ Suggest me. (5 Replies)
Hi,
I have a unix file with contents as below
Line1: ABC MNN X$$QWERTY$$ JKL
Line2: HELLO $$HOW$$ ARE $$YOU$$ DOING
i want to extract the string between $$ and $$ ie i want the output as QWERTY
HOW YOU
i want those strings seperated by some character say |
desired output is... (7 Replies)
Hello
I have string (string can have more sections)
LINE="AA;BB;CC;DD;EE"I would like to assigne each part of string separated by ";" to some new variable.
Can someone help? (4 Replies)
Hi Folks -
I'm trying to extract the string between two special characters, the "-" and "." symbols.
The string format is as such:
_PBCS_URL_PRD=https://plan-a503777.pbcs.us6.ocloud.com
_PBCS_URL_TST=https://pln-test-a503777.pbcs.us6.ocloud.comIn the above case, I need to extract "a503777".... (7 Replies)
Discussion started by: SIMMS7400
7 Replies
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)