Tagged Questions
1
vote
2answers
56 views
linux + match IP ADDRESS with 3 octets or with 4 octets
how to match IP address with 4 octets or with 3 octets in one command?
target - match xxx.xxx.xxx or xxx.xxx.xxx.xxx ( syntax should fit for Linux and Solaris )
how to merge the following commands ...
0
votes
3answers
130 views
Regular Expression for finding double characters in Bash
I am looking for a regular expression that finds all occurences of double characters in a text, a listing, etc. on the command line (Bash).
Main Question: Is there a simple way to look for sequences ...
1
vote
2answers
138 views
Regular expression problem(s) in Bash: [^negate] doesn't seem to work
When I execute ls /directory | grep '[^term]' in Bash I get a regular listing, as if the grep command is ignored somehow. I tried the same thing with egrep, I tried to use it with double and single ...
2
votes
2answers
102 views
changing pattern by removing spaces?
file :
hi hello,new york, , ,brazil site ,brazil
january,month is feb , , ,indiana jones
task:
delete all horizontal space (spaces and tab) between any two comas (like , ,) if ...
1
vote
3answers
121 views
Recursively edit files based on parent directory's name
I'm facing an issue I'm not quite sure how to overcome. I have a large directory with hundreds of folders, all following the naming scheme "a_b_x", with x being a random word. In every one of these ...
-1
votes
1answer
45 views
Doing regex in python [closed]
I had a directory "/pcap_test" which contains several log files. Each file has a pattern like:
Pkt: 1 (358 bytes), LIFE: 1, App: itunes (INTO), State: TERMINATED, Stack: /ETH/IP/UDP/itunes, Error: ...
-2
votes
1answer
76 views
0
votes
1answer
196 views
What does ^> mean in a grep pattern?
What does this command do?
grep "<[^>]*>" inuux.xml
What is searching for?
4
votes
1answer
607 views
What does \bi\b mean in a grep pattern?
What does this command do?
grep "\bi\b" linux.txt
What is it searching for?
3
votes
2answers
328 views
Replace a substring of filenames in a directory
There exists a directory, which includes several levels of sub-directories. Under these directories, there are a set of files whose names include a common word, e.g, .cc. How can I replace the .cc ...
2
votes
2answers
187 views
perl regex replacing globally when global not selected
I'm using Ubuntu 11.04 and wrote a small script that searches within text files for certain "tokens" and replaces with some a prewritten snippet from a template file of the same name.
The text files ...
4
votes
1answer
510 views
Is there a tool in linux that allows multi-line regex expressions?
I'm wanting to find the results of a multi-line regular expression in linux. I tried grep, but like most linux utilities it's line based.
Is there something similar that allows me to search across ...
1
vote
1answer
203 views
Easy Regex on Apache Logs
I'm struggling to create a regex for Apache logs. It's for ignoreregex on Fail2ban.
I'd really like to be able to put something like /house to catch all files in that directory or ...
1
vote
4answers
809 views
Processing control characters
I have a log file which contains a bunch of non visible control characters such as hex \u0003.
I would like to replace this using something like SED, but can't get the first part of the regex to ...
