String editing using sed? awk? Post: 302370491

Sponsored Content

Homework and Emergencies Homework & Coursework Questions String editing using sed? awk? Post 302370491 by bakunin on Wednesday 11th of November 2009 03:46:47 PM

11-11-2009

Registered User

First off, your estimation about sed being the right tool is correct. It was written with problems like yours in mind.

BUT: i don't think your are on the right track. The reason is: you create a sort of list and this list is almost correct - almost, but not quite so. Now you want to patch this almost-correct list into something which is indeed correct. The problem is: when you are writing software it is most of the times advisable to do it correctly the first time instead of doing it almost correctly and then patch it.

Instead of creating an sed-script to "patch the list to work" create the list correctly immediately. This is easily possible.

You mention an "above find command", but i cannot find that. So: why don't you put your script so far here and we help you to create not an amost-correct but a correct list.

Btw., i have a suspicion that your find-command (if you have used that alone) will not be giving the correct result either because i don't know of any way to solve your problem (even to the almost-correct state you have) with "find" alone - this would be a rather non-trivial task if it could be done at all (and i suspect it is impossible). This also could be corrected if you provide your work so far.

I hope this helps.

bakunin

bakunin

View Public Profile for bakunin

Find all posts by bakunin

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Editing File using awk/sed

Hello Awk Gurus, Can anyone of you help me with the below problem. I have got a file having data in below format pmFaultyTransportBlocks ----------------------- 9842993 pmFrmNoOfDiscRachFrames ----------------------- NULL pmNoRecRandomAccSuccess -----------------------...

2. Shell Programming and Scripting

awk/sed - getting string instead of number

Hi! I am writing a script handling downloading list of files and I have to check whether file is present locally and if not finished than continue downloading. To do so I have to compare sizes of remote file and local file. To check remote file size I have to parse something like this: ...

3. Shell Programming and Scripting

sed or awk editing help

Hi all I use aix (sadly). I've got a file consisting of fields separated by commas, I need a sed or awk command that will delete all spaces between two commas as long as there are only spaces between the commas. eg ,abc, ,sd , ,dr at would become ,abc,,sd ,,dr at I have...

4. Shell Programming and Scripting

Line/Variable Editing for Awk sed Cut

Hello, i have a file, i open the file and read the line, i want to get the first item in the csv file and also teh third+6 item and wirte it to a new csv file. only problem is that using echo it takes TOO LONG: please help a newbie. below is my code: WorkingDir=$1 FileName=`cut -d ',' -f...

5. Shell Programming and Scripting

match string exactly with awk/sed

Hi all, I have a list that I would like to parse with awk/sed. The list is contains entries such as: JournalTitle: Biochemistry JournalTitle: Biochemistry and cell biology = Biochimie et biologie cellulaire JournalTitle: Biochemistry and experimental biology JournalTitle: Biochemistry and...

6. Shell Programming and Scripting

editing file with awk cut and sed

HI All, I am new to unix. I have a file would like to do some editing by using awk, cut and sed. Could anyone help? This file contain 100 lines. There are one line for example: 2,"102343454",5060,"579668","579668","579668","SIP",,,"825922","035885221283026",1,268,"00:59:00.782 APR 17...

7. Shell Programming and Scripting

sed or awk command to replace a string pattern with another string based on position of this string

here is what i want to achieve... consider a file contains below contents. the file size is large about 60mb cat dump.sql INSERT INTO `table1` (`id`, `action`, `date`, `descrip`, `lastModified`) VALUES (1,'Change','2011-05-05 00:00:00','Account Updated','2012-02-10...

8. Shell Programming and Scripting

sed awk to remove the , in a string

Dear All, Can anyone help to remove the , bewteen "" in a string by using sed or awk? e.g. input : 1,4,5,"abcdef","we,are,here",4,"help hep" output:1,4,5,"abcdef","wearehere",4,"help hep" Thanks, Mimi

9. Shell Programming and Scripting

Replace string in XML file with awk/sed with string from another

Sorry for the long/weird title but I'm stuck on a problem I have. I have this XML file: </member> <member> <name>TransactionID</name> <value><string>123456789123456</string></value> </member> <member> <name>Number</name> ...

10. Shell Programming and Scripting

Replace string of a file with a string of another file for matches using grep,sed,awk

I have a file comp.pkglist which mention package version and release . In 'version change' and 'release change' line there are two versions 'old' and 'new' Version Change: --> Release Change: --> cat comp.pkglist Package list: nss-util-devel-3.28.4-1.el6_9.x86_64 Version Change: 3.28.4 -->...

LEARN ABOUT DEBIAN

sm2file

SM2FILE(1)							  ICI executables							SM2FILE(1)

NAME

       sm2file - shared-memory linked list data extraction test program

SYNOPSIS

       sm2file

DESCRIPTION

       sm2file stress-tests shared-memory linked list data extraction by retrieving and deleting all text file lines inserted into a shared-memory
       linked list that is the root object of a PSM partition named "file2sm".

       The operation of sm2file echoes the cyclical operation of file2sm: the EOF lines inserted into the linked list by file2sm punctuate the
       writing of files that are copies of file2sm's original source text file.  The name of each file written by sm2file is file_copy_cycleNbr,
       where cycleNbr is, in effect, the count of EOF lines encountered in the linked list up to the point at which the writing of this file
       began.

       sm2file may catch up with the data ingestion activity of file2sm, in which case it blocks (taking the file2sm test semaphore) until the
       linked list is no longer empty.

EXIT STATUS

       0   sm2file has terminated.

FILES

       No configuration files are needed.

ENVIRONMENT

       No environment variables apply.

DIAGNOSTICS

       can't attach to shared memory
	   Operating system error.  Check errtext, correct problem, and rerun.

       Can't manage shared memory.
	   PSM error.  Check for earlier diagnostics describing the cause of the error; correct problem and rerun.

       Can't create shared memory list.
	   PSM error.  Check for earlier diagnostics describing the cause of the error; correct problem and rerun.

       Can't create semaphore.
	   ION system error.  Check for earlier diagnostics describing the cause of the error; correct problem and rerun.

       Can't open output file
	   Operating system error.  Check errtext, correct problem, and rerun.

       can't write to output file
	   Operating system error.  Check errtext, correct problem, and rerun.

BUGS

       Report bugs to <ion-bugs@korgano.eecs.ohiou.edu>

SEE ALSO

       file2sm(1), smlist(3), psm(3)

perl v5.14.2							    2012-05-25								SM2FILE(1)