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Full Discussion: Help with a shell script to modify one line and copy the next 9 to same file
Top Forums Shell Programming and Scripting Help with a shell script to modify one line and copy the next 9 to same file Post 302366656 by Teroc on Friday 30th of October 2009 04:53:25 AM
Old 10-30-2009
I doesn't work GhostDog, well it probably does, but not in my case.
I did something like that:

Code:
NR==FNR {a[$2]=$1;next} #I read a first file to get the search pattern
{if ($3 in a)
    {$3=a[$3]
    print
    d=9
    next}
    d--&&d>=0
}

But it does only print the first line.

Here is an example of my files.
The first file where I read the values looks like this:
Code:
a1 b1
a2 b2
a3 b3

Then the second file looks like: (there is also other stuff in the file not related)
Code:
....
/begin MEASUREMENT b1
   "comment" 
   UWORD 
   ident 
   1 
   100
   0 
   65535 
   ECU_ADDRESS 0x4000582C
  /end MEASUREMENT 
....

I want to check if $3==b1, then replace it with a1 and copy the others lines at the end of the file, and do it for each bi of the first file.

thanks for your help.

---------- Post updated at 08:53 AM ---------- Previous update was at 08:42 AM ----------

Found a solution doing this:

Code:
NR==FNR {a[$2]=$1;next}
{if ($3 in a)
    {$3=a[$3]
    print
    d=9
    while (d>0)
    {getline; print; d--}
    }
}

 

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LEARN ABOUT CENTOS

unsquashfs

UNSQUASHFS(1)						  uncompress squashfs filesystems					     UNSQUASHFS(1)

NAME

       mksquashfs - tool to uncompress squashfs filesystems

SYNOPSIS

       unsquashfs [OPTIONS] FILESYSTEM [directories or files to extract]

DESCRIPTION

       Squashfs  is  a	highly compressed read-only filesystem for Linux. It uses zlib compression to compress both files, inodes and directories.
       Inodes in the system are very small and all blocks are packed to minimize data overhead. Block sizes greater than 4K are supported up to  a
       maximum of 64K.

       Squashfs  is  intended for general read-only filesystem use, for archival use (i.e. in cases where a .tar.gz file may be used), and in con-
       strained block device/memory systems (e.g. embedded systems) where low overhead is needed.

OPTIONS

       -v, -version
	   print version, licence and copyright information.

       -d PATHNAME, -dest PATHNAME
	   unsquash to PATHNAME, default "squashfs-root".

       -n, -no-progress
	   don't display the progress bar.

       -no, -no-xattrs
	   don't extract xattrs in file system.

       -x, -xattrs
	   extract xattrs in file system (default).

       -p NUMBER, -processors NUMBER
	   use NUMBER processors. By default will use number of processors available.

       -i, -info
	   print files as they are unsquashed.

       -li, -linfo
	   print files as they are unsquashed with file attributes (like ls -l output).

       -l, -ls
	   list filesystem, but don't unsquash.

       -ll, -lls
	   list filesystem with file attributes (like ls -l output), but don't unsquash.

       -f, -force
	   if file already exists then overwrite.

       -s, -stat
	   display filesystem superblock information.

       -e EXTRACT_FILE, -ef EXTRACT_FILE
	   list of directories or files to extract. One per line.

       -da SIZE, -data-queue SIZE
	   Set data queue to SIZE Mbytes. Default 256 Mbytes.

       -fr SIZE, -frag-queue SIZE
	   Set fragment queue to SIZE Mbytes. Default 256 Mbytes.

       -r, -regex
	   treat extract names as POSIX regular expressions rather than use the default shell wildcard expansion (globbing).

   Decompressors available
       gzip

       lzo

       xz

SEE ALSO

       mksquashfs(1)

HOMEPAGE

       More information about unsquashfs and the squashfs filesystem can be found at <http://squashfs.sourceforge.net/>.

AUTHOR

       squashfs was written by Phillip Lougher <plougher@users.sourceforge.net>.

       This manual page was written by Daniel Baumann <daniel.baumann@progress-technologies.net>.

4.2								    2012-06-30							     UNSQUASHFS(1)
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