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# 1  
Old 10-05-2009
cut and paste

Hi,
Need a help with shell script. I have to search for a string in one of the file, if match found, copy the line to a new file and delete the line from the exisiting file.
eg:
Code:
83510000000000063800000.1800000.1600000.1600000.2400000.1800000.2000000.21
83510000000000064500000.1100000.2800000.1000000.1200000.1900000.1200000.12
83510000000000064500000.1100000.2800000.1000000.1200000.1900000.1200000.13
83510000000000064900001.7800001.0400001.2300001.2600001.0900001.9000001.48
83510000000000065100000.2500000.1400000.2300000.3300000.2300000.2300000.20

if 835100000000000638 is found, i need to replace it with 835100000000000639 and write to a new file. Also I need the 835100000000000638 to be deleted from my exising file.

I tried
Code:
sed -n "s/835100000000000638/835100000000000639/p oldfile > newfile

this will find and write to new file but wont delete from existing file.

Please help.
# 2  
Old 10-05-2009
If your sed support -i option:

Code:
sed  -i.bak "s/835100000000000638/835100000000000639/g" urfile

If your sed don't support -i option, perl will help you:

Code:
perl -i.bak -pe 's/835100000000000638/835100000000000639/g' urfile


Last edited by rdcwayx; 10-06-2009 at 12:28 AM..
# 3  
Old 10-05-2009
Copy this to a text file (strip.awk)

Code:
# strip lines out of file and make new file of lines removed and modified

# set up patterns - any regex will work

BEGIN {
        MY_PAT="835100000000000638"
        NEW_PAT="835100000000000639"
}

# This clause is executed on the opening of each file on the command line
# It first checks to see if this is not the first file and cleans up the
#  previous files and copies the new stripped file to the old file
#  NOTE:  I would prefer if it didn't overwrite the input file...
# It then creates the names and commands it will need later
(FNR == 1) {                    # check if first line of new file
        if ( NR != 1)           # see if this is not first file
        {
                close(FILEOUT)  # if true, then we close previous files
                close(FILELOG)
                system(FILECP)  # do the copy
                system(FILERM)  # remove the work file
        }

        FILEOUT = FILENAME ".strip"     # create striped file name using input file name
        FILELOG = FILENAME ".new"               # create new file

        FILECP = "cp " FILEOUT " " FILENAME     # copy command
        FILERM = "rm " FILEOUT          # remove strip file
}

# This clause executes for every line
# It copies lines from the input file to the appropriate output file
{
        if (  sub(MY_PAT,NEW_PAT) == 0 )      # test for pattern in line
                print > FILEOUT # save to stripped file if pattern not found
        else
                print > FILELOG # save to remove log if pattern match
}

# This clause is executed when the last line of the last file is reached
END {
        system(FILECP)  # clean up last file
        system(FILERM)
}

Then execute:

Code:
awk -f strip.awk <data.file>


It will create a file with .new with the removed lines....
# 4  
Old 10-06-2009
Hope I understand your question correctly.

Code:
$ cat a
83510000000000063800000.1800000.1600000.1600000.2400000.1800000.2000000.21
83510000000000064500000.1100000.2800000.1000000.1200000.1900000.1200000.12
83510000000000064500000.1100000.2800000.1000000.1200000.1900000.1200000.13
83510000000000064900001.7800001.0400001.2300001.2600001.0900001.9000001.48
83510000000000065100000.2500000.1400000.2300000.3300000.2300000.2300000.20

$ sed -i -e 's/835100000000000638/835100000000000639/gw test'  -e '/835100000000000639/d' a

$ cat test
83510000000000063900000.1800000.1600000.1600000.2400000.1800000.2000000.21

$ cat a
83510000000000064500000.1100000.2800000.1000000.1200000.1900000.1200000.12
83510000000000064500000.1100000.2800000.1000000.1200000.1900000.1200000.13
83510000000000064900001.7800001.0400001.2300001.2600001.0900001.9000001.48
83510000000000065100000.2500000.1400000.2300000.3300000.2300000.2300000.20

# 5  
Old 10-06-2009
skmdu, yes. You got it right. So are you asking me to do it in two sed commands?
# 6  
Old 10-06-2009
Code:
It is single sed command. 
$ sed -i -e 's/835100000000000638/835100000000000639/gw test'  -e '/835100000000000639/d'

# 7  
Old 10-06-2009
Got an error message not recognized flag i

Code:
sed: Not a recognized flag: i
Usage:  sed [-n] Script [File ...]
        sed [-n] [-e Script] ... [-f Script_file] ... [File ...]


What should I do?

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