I'm working with expect scripting in order to ssh into a device and pull information off of it. However, I'm facing issues parsing the expect_out(buffer) for the data from the commands I send.
This is the contents of my expect_out(buffer):
"mca-cli-op info\r\n\r\nModel: UAP-AC-Lite\r\nVersion: 6.0.21.13673\r\nMAC Address: 10:9f:5r:20:c5:7e\r\nIP Address: 123.123.1.123\r\nHostname: UAP-AC-Lite\r\nUptime: 152662 seconds\r\n\r\nStatus: Connected (http://base_controller<url;>/inform)\r\nUAP-AC-Lite-BZ.6.0.21# "
Right now I'm trying to get the Model (UAP-AC-LITE) without the Model tag.
So the regex expression I'm using is,
expect -re {(?=(Model: ))+[.*\$]}
set model "$expect_out(0,string)"
puts $model
The command doesn't work, but my thought process was that I would perform a look ahead for the Model tag, then match only the subsequent characters after it to the new line. I've tried replacing the "$" with \r\n but that doesn't work either. Can anyone explain what I'm doing wrong? Thanks for the help!
Note: If possible, I wouldn't want to include the newline either, as it might mess up commands that I run which use these variables.
You're close, but the regex is incorrect. Try
expect -re {Model:\s+([^\r]+)}
set model $expect_out(1,string)
The 1 in $expect_out(1,string) means the first set of capturing parentheses.
Regexes are documented at http://www.tcl-lang.org/man/tcl8.6/TclCmd/re_syntax.htm
I am trying to build a connection string that requires pulling 3 IP addresses from another config file. When I get those values, I need to replace the port on each. I plan to replace each port using simple Bash find and replace ${string/pattern/replacement} but my problem is I'm stuck on the best way to parse the pattern out of the IP.
Here is what I have so far:
myFile.config:
ip.1=ip-ip-1-address:1234:5678
ip.2=ip-ip-2-address:1234:5678
ip.3=ip-ip-3-address:1234:5678
Copying some other simple process, I found I can pull the value of each IP like this:
IP1=`grep "ip.1=" /path/to/conf/myFile.config | awk -F "=" '{print $2}'`
which gives me ip.1=ip-ip-1-address:1234:5678. However, I need to replace 1234:5678 with 6543 for example. I've been looking around and I found this awesome answer that detailed using Bash prefix substitution but that relies on knowing the parameter. for example, I would have to do it this way:
test=${ip1##ip-ip-1-address:}
which results in $test being 1234:5678. That's fine but maybe I don't know the IP address as the parameter, so I'm back to considering regex unless there's a way for me to use * as the parameter or something, but I have been unsuccessful so far. For regex, I have tried a bunch such as test=${ip1/(?<=:).*/}.
Note that ${ip1/(?<=:).*/} you tried is an example of string manipulation syntax that does not support regex, only specific patterns.
You seem to want
x='ip.1=ip-ip-1-address:1234:5678'
echo "${x%%:*}:6543" # => ip.1=ip-ip-1-address:6543
The ${x%%:*} takes the value of x and removes all chars from the end till the first : including it. :6543 is added to the result of this manipulation using "${x%%:*}:6543".
To extract that value, you may also use
awk '/^ip\.1=/{sub("^[^:]+:", "");print}' myFile.config
The awk command finds lines starting with ip.1= and then removes all text from the start till the first colon including the colon and only prints these values.
after several hours of searching and experimenting, I'm hoping someone can either help me or rub my nose in a post I've missed which acctually would be helpful as well come to think of it...
Problem:
I've made a quick&dirty fix in several dozens of php scripts (we use to enhance smarty capabilities) with security checks.
Example of input(part1):
///// SMARTY AUTH /////
$auth['model'] = isset($params['model']) ? $params['model'] : null;
$auth['requiredLevel'] = isset($params['requiredlevel']) ? $params['requiredlevel'] : null;
$auth['baseAuthorizationLevel'] = isset($params['_authorizationlevel']) ? $params['_authorizationlevel'] : null;
$auth['defaultRequiredLevel'] = AuthorizationLevel::AULE_WRITE;
$auth['baseModel'] = $smarty->getTemplateVars('model');
///// SMARTY AUTH /////
...which i'd like to replace with a much cleaner solution we've come up with. Now here's the rub; in one section of the file there's a block of lines, luckily with very distinct delimiter lines, but in one of those lines is a piece of code that needs to be merged with a replacement string which replaces a second pattern in a line which follows the before-said block, with optionally a variable number of lines in between.
I'm having trouble figuring out how to piece this nested code together as the shorthand code of sed is quite confusing to me.
So far I've tried to assemble the code needed to capture the first block, but sed keeps giving me the same error each time; extra characters after command
here are some of the attempts I've made:
sed -n 'p/^\/\/\/\/\/ SMARTY AUTH \/\/\/\/\/\\n.*\\n.*\\n.*\\n.*AULE_\([A-Z_]*\);$^.*$^^\/\/\/\/\/ SMARTY AUTH \/\/\/\/\/$/' function.xls_form.php
sed -n 'p/\(^.*SMARTY AUTH.*$^.*$^.*$^.*$^.*AULE_\([A-Z_]*\);$^.*$^.*SMARTY AUTH.*$/' function.xls_form.php
the second part is relatively easy compared to the first;
sed -ei'.orig' 's/RoleContextAuthorizations::smartyAuth(\$auth)/$smarty->hasAccess(\$params,AuthorizationLevel::AULE_\1)/' *.php
where \1 would be the matched snippet from the first part...
Edit:
The first codeblock is an example of input part 1 which needs to be removed; part 2 is RoleContextAuthorizations::smartyAuth($auth) which needs to be replaced with $smarty->hasAccess($params, AuthorizationLevel::AULE_<snippet from part1>)
/edit
Hoping somebody can point me in the right direction, Many thanks in advance!!!
The hold space is going to be key to solving this. You can copy material from the pattern space (where sed normally works) into the hold space, and do various operations with the hold space, etc.
You need to find the AuthorizationLevel::AULE_WRITE type text within the block markers, and copy that to the hold space, and then delete the text within the block markers. And then separately find the other pattern and replace it with information from the hold space.
Given that the markers use slashes, it is also time to use a custom search marker which is introduced by a backslash. The following could be in a file script.sed, to be used as:
sed -f script.sed function.xls_form.php
When you're sure it's working, you can play with -i options to overwrite the original.
\%///// SMARTY AUTH /////%,\%///// SMARTY AUTH /////% {
/.*\(AuthorizationLevel::AULE_[A-Z]\{1,\}\).*/{
s//$smarty->hasAccess($params,\1);/
x
}
d
}
/RoleContextAuthorizations::smartyAuth($auth)/x
The first line searches for the start and end marker, using \% to change the delimiter to %. There's then a group of actions in braces. The second line searches for the authorization level and starts a second group of actions. The substitute command replaces the line with the desired output line. The x swaps the pattern space and the hold space, copying the desired output line to the hold space (and copying the empty hold space to the pattern space — it's x for eXchange pattern and hold spaces). This has saved the AuthorizationLevel information. The inner block ends; the outer block deletes the line and continues the execution. Note that there's no need to escape the $ symbol most of the time — it would matter if it was at the end of a pattern (there's a difference between /a\$/ and /a$/, but no difference between /b$c/ and /b\$c/).
The last line then looks for the RoleContextAuthorizations line and swaps it with the hold space. Everything else is just let through.
Given a data file containing:
Gibberish
Rhubarb
///// SMARTY AUTH /////
$auth['model'] = isset($params['model']) ? $params['model'] : null;
$auth['requiredLevel'] = isset($params['requiredlevel']) ? $params['requiredlevel'] : null;
$auth['baseAuthorizationLevel'] = isset($params['_authorizationlevel']) ? $params['_authorizationlevel'] : null;
$auth['defaultRequiredLevel'] = AuthorizationLevel::AULE_WRITE;
$auth['baseModel'] = $smarty->getTemplateVars('model');
///// SMARTY AUTH /////
More gibberish
More rhubarb - it is good with strawberries, especially in yoghurt
RoleContextAuthorizations::smartyAuth($auth);
Trailing gibbets — ugh; worse are trailing giblets
Finish - EOF
The output from sed -f script.sed data is:
$ sed -f script.sed data
Gibberish
Rhubarb
More gibberish
More rhubarb - it is good with strawberries, especially in yoghurt
$smarty->hasAccess($params,AuthorizationLevel::AULE_WRITE);
Trailing gibbets — ugh; worse are trailing giblets
Finish - EOF
$
I think that's what was wanted.
You can convert the file of sed script into a single line of gibberish, but that's left as an exercise for the reader — it isn't very hard, but GNU sed and BSD (macOS) sed have different rules for when you need semicolons as part of a single line command; you were warned. There are also differences in the rules for the -i option between the GNU and BSD variants of sed.
If you have to preserve some portions of the RoleContextAuthorizations::smartyAuth line, you have to work harder, but it can probably be done. For example, you can add the hold space to the current pattern space with the G command, and then edit the information into the right places. It is simplest if every place the line occurs needs to look the same apart from the AULE_XYZ string — that's what I've assumed here.
Also, note that using x rather than h or g is lazy — but doesn't matter if there's only one RoleContextAuthorizations::smartyAuth line. Using the alternatives would mean that if a file has multiple RoleContextAuthorizations::smartyAuth lines, then you'd be able to make the same substitution in each, unless there's another ///// SMARTY AUTH ///// in the file.
Friends:
I have to process a CSV file, using Perl language and produce an Excel as output, using the Excel::Writer::XSLX module. This is not a homework but a real life problem, where I cannot download whichever Perl version (actually, I need to use Perl 5.6), or whichever Perl module (I have a limited set of them). My OS is UNIX. I can also use (embedding in Perl) ksh and csh (with some limitation, as I have found so far). Please, limit your answers to the tools I have available. Thanks in advance!
Even though I am not a Perl developer, but coming from other languages, I have already done my work. However, the customer is asking for extra processing where I am getting stuck on.
1) The stones in the road I found are coming from two sides: from Perl and from Excel particular styles of processing data. I already found a workaround to handle the Excel, but -as mentioned in the subject- I have difficulties while processing zeroes found in CSV input file. To handle the Excel, I am using the '0 way which is the final way for data representation that Excel seems to have while using the # formatting style.
2) Scenario:
I need to catch standalone zeroes which might be present in whichever line / column / cell of the CSV input file and put them as such (as zeroes) in the Excel output file.
I will go directly to the point of my question to avoid loosing your valuable time. I am providing more details after my question:
Research and question:
I tried to use Perl regex to find standalone "0" and replace them by whichever string, planning to replace them back to "0" at the end of processing.
perl -p -i -e 's/\b0\b/string/g' myfile.csv`
and
perl -i -ple 's/\b0\b/string/g' myfile.csv
Are working; but only from command line. They aren't working when I call them from the Perl script as follows:
system("perl -i -ple 's/\b0\b/string/g' myfile.csv")
Do not know why... I have already tried using exec and eval, instead of system, with the same results.
Note that I have a ton of regex that work perfectly with the same structure, such as the following:
system("perl -i -ple 's/input/output/g' myfile.csv")
I have also tried using backticks and qx//, without success. Note that qx// and backticks have not the same behavior, since qx// is complaining about the boundaries \b because of the forward slash.
I have tried using sed -i, but my System is rejecting -i as invalid flag (do not know if this happens in all UNIX, but at least happens in the one at work. However is accepting perl -i).
I have tried embedding awk (which is working from command line), in this way:
system `awk -F ',' -v OFS=',' '$1 == \"0\" { $1 = "string" }1' myfile.csv > myfile_copy.csv
But this works only for the first column (in command line) and, other than having the disadvantage of having extra copy file, Perl is complaining for > redirection, assuming it as "greater than"...
system(q#awk 'BEGIN{FS=OFS=",";split("1 2 3 4 5",A," ") } { for(i in A)sub(0,"string",$A[i] ) }1' myfile.csv#);
This awk is working from command line, but only 5 columns. But not in Perl using #.
All the combinations of exec and eval have also been tested without success.
I have also tried passing to system each one of the awk components, as arguments, separated by commas, but did not find any valid way to pass the redirector (>), since Perl is rejecting it because of the mentioned reason.
Using another approach, I noticed that the "standalone zeroes" seem to be "swallowed" by the Text::CSV module, thus, I get rid off it, and turned back to a traditional looping in csv line by line and a spliter for commas, preserving the zeroes in that way. However I found the "mystery" of isdual in Perl, and because of the limitation of modules I have, I cannot use the Dumper. Then, I also explored the guts of binaries in Perl and tried the $x ^ $x, which was deprecated since version 5.22 but valid till that version (I said mine is 5.6). This is useful to catch numbers vs strings. However, while if( $x ^ $x ) returns TRUE for strings, if( !( $x ^ $x ) ) does not returns TRUE when $x = 0. [UPDATE: I tried this in a devoted Perl script, just for this purpose, and it is working. I believe that my probable wrong conclusion ("not returning TRUE") was obtained when I did not still realize that Text::CSV was swallowing my zeroes. Doing new tests...].
I will appreciate very much your help!
MORE DETAILS ON MY REQUIREMENTS:
1) This is a dynamic report coming from a database which is handover to me and I pickup programmatically from a folder. Dynamic means that it might have whichever amount of tables, whichever amount of columns in each table, whichever names as column headers, whichever amount of rows in each table.
2) I do not know, and cannot know, the column names, because they vary from report to report. So, I cannot be guided by column names.
A sample input:
Alfa,Alfa1,Beta,Gamma,Delta,Delta1,Epsilon,Dseta,Heta,Zeta,Iota,Kappa
0,J5,alfa,0,111.33,124.45,0,0,456.85,234.56,798.43,330000.00
M1,0,X888,ZZ,222.44,111.33,12.24,45.67,0,234.56,0,975.33
3) Input Explanation
a) This is an example of a random report with 12 columns and 3 rows. Fist row is header.
b) I call "standalone zeroes" those "clean" zeroes which are coming in the CSV file, from second row onwards, between commas, like 0, (if the case is the first position in the row) or like ,0, in subsequent positions.
c) In the second row of the example you can read, from the beginning of the row: 0,J5,alfa,0, which in this particular case, are "words" or "strings". In this case, 4 names (note that two of them are zeroes, which required to be treated as strings). Thus, we have a 4 names-columns example (Alfa,Alfa1,Beta,Gamma are headers for those columns, but only in this scenario). From that point onwards, in the second row, you can see floating point (*.00) numbers and, among them, you can see 2 zeroes, which are numbers. Finally, in the third line, you can read M1,0,X888,Z, which are the names for the first 4 columns. Note, please, that the 4th column in the second row has 0 as name, while the 4th column in the third row has ZZ as name.
Summary: as a general picture, I have a table-report divided in 2 parts, from left to right: 4 columns for names, and 8 columns for numbers.
Always the first M columns are names and the last N columns are numbers.
- It is unknown which number is M: which amount of columns devoted for words / strings I will receive.
- It is unknown which number is N: which amount of columns devoted for numbers I will receive.
- It is KNOWN that, after the M amount of columns ends, always starts N, and this is constant for all the rows.
I have done a quick research on Perl boundaries for regex ( \b ), and I have not found any relevant information regarding if it applies or not in Perl 5.6.
However, since you are using and old Perl version, try the traditional UNIX / Linux style (I mean, what Perl inherits from Shell), like this:
system("perl -i -ple 's/^0/string/g' myfile.csv");
The previous regex should do the work doing the change at the start of the each line in your CSV file, if matches.
Or, maybe better (if you have those "standalone" zeroes, and want avoid any unwanted change in some "leading zeroes" string):
system("perl -i -ple 's/^0,/string,/g' myfile.csv");
[Note that I have added the comma, after the zero; and, of course, after the string].
Note that the first regex should work; the second one is just a "caveat", to be cautious.
EDIT: I am using Cygwin. I am unsure whether this is of relevance and it was a detail I missed during writing this question.
EDIT2: Have tried replacing the "TAB" char people pointed out with the RegEx \s which covers spacing chars (spaces and tabs primarily) and this did not affect the expression at all, meaning that it is not the tabs causing the issue, especially since the expression runs once without errors anyway.
So far this script has been causing me a ton of trouble.
I DID have an issue before but I resolved that while I was writing a question here (lucky imo) but this one I've been stuck on for at least an hour now and I've tried varying solutions, none of which actually work or told me something I didn't already try.
I have a rather cool seeming FTP log fetcher script and part of this script replaces the 600MB of errors in this logfile to nothing, essentially removing them. Unfortunately this script also gets rid of parts of other errors too, so I've had to edit it. This is where I'm getting stuck.
Through base research I managed to find out that sed could do what I want, and through three hours of playing so far it does most of what I tell it to, minus one thing. One, and ONLY one, of the sed statements I have built only replaces the first instance of the string I've given it despite having the g modifier attached to the end.
I am working with a test script right now as to avoid potential permanent damage to my original FTP script, and the test script copies over an example file with a few of the errors I need replacing.
Walkthrough of the scripts INTENDED behaviour before showing:
1. Sets a prefix which happens on ALL lines in the file, pretty important part of the script.
2. Copies the example file to a file named test2.log
3. Replace all instances of the UNIX newline char \n with [loll] (first thing that came to my mind)
4. Remove all instances of battle error type 1 and 2.
5. Return all [loll] strings with the UNIX \n for newlines, therefore returning the logfile to its original state minus the errors.
Script:
#DTP="\[([0-9]+-[0-9]+-[0-9]+-[0-9]+|latest)\.log\] \[[0-9]+:[0-9]+:[0-9]+\] \[Server thread/(INFO|WARN)\]: "
echo "${DTP}"
DTP1="\[[0-9]*:[0-9]*:[0-9]*\]\s\[Server\sThread\/\(WARN\|INFO\)\]:\s"
DTP="\[loll\]\[[0-9]*:[0-9]*:[0-9]*\]\s\[Server\sThread\/\(WARN\|INFO\)\]:\s"
echo "${DTP}"
echo "1"
cp test.log test2.log
#cat test.log >test2.log
sed -i ':a;N;$!ba;s/\n/\[loll\]/g' test2.log #| egrep -i "" >test2.log
sed -i 's/'${DTP1}'Caught error in battle. Continuing...'${DTP}'java.lang.NullPointerException'${DTP}' at com.pixelmonmod.pixelmon.battles.controller.participants.PixelmonWrapper.useAttack(PixelmonWrapper.java:173)'${DTP}' at com.pixelmonmod.pixelmon.battles.controller.participants.PixelmonWrapper.takeTurn(PixelmonWrapper.java:330)'${DTP}' at com.pixelmonmod.pixelmon.battles.controller.BattleControllerBase.takeTurn(BattleControllerBase.java:276)'${DTP}' at com.pixelmonmod.pixelmon.battles.controller.BattleControllerBase.update(BattleControllerBase.java:157)'${DTP}' at com.pixelmonmod.pixelmon.battles.BattleRegistry.updateBattles(BattleRegistry.java:63)'${DTP}' at com.pixelmonmod.pixelmon.battles.BattleTickHandler.tickStart(BattleTickHandler.java:12)'${DTP}' at cpw.mods.fml.common.eventhandler.ASMEventHandler_20_BattleTickHandler_tickStart_WorldTickEvent.invoke(.dynamic)'${DTP}' at cpw.mods.fml.common.eventhandler.ASMEventHandler.invoke(ASMEventHandler.java:51)'${DTP}' at cpw.mods.fml.common.eventhandler.EventBus.post(EventBus.java:122)'${DTP}' at cpw.mods.fml.common.FMLCommonHandler.onPostWorldTick(FMLCommonHandler.java:255)'${DTP}' at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:929)'${DTP}' at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:429)'${DTP}' at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:776)'${DTP}' at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:639)'${DTP}' at java.lang.Thread.run(Thread.java:745)//gI' test2.log
echo "2"
sed -i 's/'${DTP1}'Caught error in battle. Continuing...'${DTP}'java.lang.NullPointerException\[loll\]//gI' test2.log
echo "3"
sed -i 's/\[loll\]/\n/g' test2.log
I've set them to also run case insensitive checks on the provided strings as sometimes I write with all lower case, however for most of this I copied and pasted it directly.
Sample input:
http://pastebin.com/3KPB33X2
Outputs:
Expected:
meow
Test message
WOOF MEOWLOL
Actual: http://pastebin.com/pnvDwkxz
It's been killing my mind for a while now because I had this issue even before the other one, except I barely noticed it. I can't find any predictable behaviour in the script, and as far as I am aware it SHOULD be working perfectly fine and giving me the output I expect.
Any help would be appreciated, because as soon as I can get this bug sorted out I'll be able to enter in the rest of the script and replace this with the existing battle-error replacement script in my log-fetcher.
Knowing me it's something small and stupid but I've tried literally everything I came across, including adding the :a;N;$!ba; to the start of the bit which isn't working properly (and realising that failed horribly).
Thanks.
~BAI1
Are you looking for something like this:
sed -n ':a;s/\[.*Server thread\/\(INFO\|WARN\).*//i;/^$/!p;n;b a' battle.log