Login or Register to Ask a Question and Join Our Community


Shell Programming and Scripting

ignore space regular expression

Login to Discuss or Reply to this Discussion in Our Community

 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting ignore space regular expression
# 1  
Old 08-21-2012
ignore space regular expression
I just wrote a modsecurity rule that blocks execution on "cat /etc/passwd" from webshell. But when I use
Code:
cat       /etc/passwd

it works. Ie when I add space after cat. What I need is a regular expression to ignore additional space than the first single space after cat.
# 2  
Old 08-21-2012
For which regex engine do you want a pattern? In perl:
Code:
/cat\s+\/etc\/passwd/

This User Gave Thanks to balajesuri For This Post:
anil510
# 3  
Old 08-21-2012
balajesuri

It worked. I work with the regex engine that comes with modsecurity.
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Difference between space and [[:space:]] in regular expression

May I know the difference between space in keyboard and ] in regular expression I entered the following find . -type f -print | xargs grep -n 'dt=' | cut -d":" -f3 | sed 's/^ *dt=/dt=/g' After "^" there is a space. and the result is... dt=`date +%Y%m%d%H%M%S` dt=`date +%Y%m%d`... (6 Replies)
Discussion started by: bobbygsk
6 Replies

2. Shell Programming and Scripting

AWK FS with ignore space option

Hi, i have in a situation to get the variables which are having a "|" delimiter and each variable may or may not have spaces, so how can i skip the spaces on the string and print the string as it is. For example: line = "|Hello world|Hello|Hi Guys| read x y z <<<$(echo "$line" | awk -F"|"... (5 Replies)
Discussion started by: tprabhaker
5 Replies

3. UNIX for Advanced & Expert Users

sed: -e expression #1, char 0: no previous regular expression

Hello All, I'm trying to extract the lines between two consecutive elements of an array from a file. My array looks like: problem_arr=(PRS111 PRS213 PRS234) j=0 while } ] do k=`expr $j + 1` sed -n "/${problem_arr}/,/${problem_arr}/p" problemid.txt ---some operation goes... (11 Replies)
Discussion started by: InduInduIndu
11 Replies

4. Programming

Perl: How to read from a file, do regular expression and then replace the found regular expression

Hi all, How am I read a file, find the match regular expression and overwrite to the same files. open DESTINATION_FILE, "<tmptravl.dat" or die "tmptravl.dat"; open NEW_DESTINATION_FILE, ">new_tmptravl.dat" or die "new_tmptravl.dat"; while (<DESTINATION_FILE>) { # print... (1 Reply)
Discussion started by: jessy83
1 Replies

5. Shell Programming and Scripting

Integer expression expected: with regular expression

CA_RELEASE has a value of 6. I need to check if that this is a numeric value. if not error. source $CA_VERSION_DATA if * ] then echo "CA_RELESE $CA_RELEASE is invalid" exit -1 fi + source /etc/ncgl/ca_version_data ++ CA_PRODUCT_ID=samxts ++ CA_RELEASE=6 ++ CA_WEEK_NO=7 ++... (3 Replies)
Discussion started by: ketkee1985
3 Replies

6. Shell Programming and Scripting

Regular expression

Hi, How can I traverse backward in a string. I want second last directory in a path. For eg, /home/devel/scripts/shell/2009/test.sh I want 2009 here (6 Replies)
Discussion started by: gentleDean
6 Replies

7. Shell Programming and Scripting

Regular Expression For Space

Hi all, I want a regular expression that will check for the space. I mean, it should accept everything but no space should be there in the variable. e.g. var1="aaaa" >>> OK var2='aaa vv' >> Not OK So it should not validate the second variable. Please help. Thanks in Advance.... (3 Replies)
Discussion started by: patelamit009
3 Replies

8. Linux

Regular expression to extract "y" from "abc/x.y.z" .... i need regular expression

Regular expression to extract "y" from "abc/x.y.z" (2 Replies)
Discussion started by: rag84dec
2 Replies

9. Shell Programming and Scripting

Trick to ignore space in folder name

Hello All, I am getting error while passing a folder name that has space to the cmd line argument. sh log_delete2.sh "/home/kumarpua/TESTARTIFACTS/atf-chix/ATF-subversion-dev/ssenglogs/A RM" log_delete2.sh: line 17: cd: /home/kumarpua/TESTARTIFACTS/atf-chix/ATF-subversion-dev/ssenglogs/A:... (3 Replies)
Discussion started by: pulkit
3 Replies

10. Shell Programming and Scripting

Regular Expression + Aritmetical Expression

Is it possible to combine a regular expression with a aritmetical expression? For example, taking a 8-numbers caracter sequece and casting each output of a grep, comparing to a constant. THX! (2 Replies)
Discussion started by: Z0mby
2 Replies
Login or Register to Ask a Question