I am having trouble parsing rpm filenames in a shell script.. I found a snippet of perl code that will perform the task but I really don't have time to rewrite the entire script in perl. I cannot for the life of me convert this code into something sed-friendly:
if ($rpm =~ /(*)-(*)-(*)\.(.*)/)... (1 Reply)
Hi,
Please help me to understand the bold segments in the below regex.
Both are of same type whose meaning I am looking for.
find . \( -iregex './\{6,10\}./src' \) -type d -maxdepth 2
Output:
./20111210.0/src
In continuation to above:
sed -e 's|./\(*.\{1,3\}\).*|\1|g'
Output: ... (4 Replies)
I have a file of protein sequences with headers (my source file). Based on a list of IDs (which are included in some of the headers), I'd like to print out only the specified sequences, with only the ID as header.
In other words, I'd like to search source.txt for the terms in IDs.txt, and print... (3 Replies)
I have the following line of code that works wonders. I just don't completely understand it as I am just starting to learn regex. Can you help me understand exactly what is happening here?
find . -type f | grep -v '^\.$' | sed 's!\.\/!!' (4 Replies)
# echo "Teest string" | sed 's/e*/=>replaced=</'
=>replaced<=Teest string
So, in the above code , sed replaces at the start. does that mean sed using the pattern e* settles to zero occurence ? Why sed was not able to replace Teest string.
# echo "Teest string" | sed 's/e*//g'
Tst string
... (6 Replies)
Hi Guys,
Could you please kindly explain what exactly the below SED command will do ?
I am quite confused and i assumed that,
sed 's/*$/ /'
1. It will remove tab and extra spaces .. with single space.
The issue is if it is removing tab then it should be Î right ..
please assist.... (3 Replies)
I am not a big expert in regex and have just little understanding of that language.
Could you help me to understand the regular Perl expression:
^(?!if\b|else\b|while\b|)(?:+?\s+){1,6}(+\s*)\(*\) *?(?:^*;?+){0,10}\{
------
This is regex to select functions from a C/C++ source and defined in... (2 Replies)
I'm trying to get some exclusions into our sendmail regular expression for the K command. The following configuration & regex works:
LOCAL_CONFIG
#
Kcheckaddress regex -a@MATCH
+<@+?\.++?\.(us|info|to|br|bid|cn|ru)
LOCAL_RULESETS
SLocal_check_mail
# check address against various regex... (0 Replies)
Hi,
I need some guidance with understanding this Perl script below. I am not the author of the script and the author has not leave any documentation. I supposed it is meant to be 'easy' if you're a Perl or regex guru. I am having problem understanding what regex to use :confused: The script does... (3 Replies)
Hello All,
While googling on regex I came across a site named Regulex Regulex:JavaScript Regular Expression Visualizer
I have written a simple regex ^(a|b|c)(*)@(.*) and could see its visualization; one could export it too, following is the screen shot.
... (3 Replies)
Discussion started by: RavinderSingh13
3 Replies
LEARN ABOUT DEBIAN
ifdata
ifdata(1)ifdata(1)NAME
ifdata - get network interface info without parsing ifconfig output
SYNOPSIS
ifdata [options] {iface}
DESCRIPTION
ifdata can be used to check for the existence of a network interface, or to get information abut the interface, such as its IP address. Un-
like ifconfig or ip, ifdata has simple to parse output that is designed to be easily used by a shell script.
OPTIONS -h Print out a help summary.
-e Test to see if the interface exists, exit nonzero if it does not.
-p Prints out the whole configuration of the interface.
-pe Prints "yes" or "no" if the interface exists or not.
-pa Prints the IPv4 address of the interface.
-pn Prints the netmask of the interface.
-pN Prints the network address of the interface.
-pb Prints the broadcast address of the interface.
-pm Prints the MTU of the interface.
Following options are Linux only.
-ph Prints the hardware address of the interface.
-pf Prints the flags of the interface.
-si Prints out all the input statistics of the interface.
-sip Prints the number of input packets.
-sib Prints the number of input bytes.
-sie Prints the number of input errors.
-sid Prints the number of dropped input packets.
-sif Prints the number of input fifo overruns.
-sic Print the number of compressed input packets.
-sim Prints the number of input multicast packets.
-so Prints out all the output statistics of the interface.
-sop Prints the number of output packets.
-sob Prints the number of output bytes.
-soe Prints the number of output errors.
-sod Prints the number of dropped output packets.
-sof Prints the number of output fifo overruns.
-sox Print the number of output collisions.
-soc Prints the number of output carrier losses.
-som Prints the number of output multicast packets.
-bips Prints the number of bytes of incoming traffic measured in one second.
-bops Prints the number of bytes of outgoing traffic measured in one second.
AUTHOR
Benjamin BAYART
2006-03-07 ifdata(1)