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Full Discussion: Capturing some data from a file into a variable
Top Forums UNIX for Dummies Questions & Answers Capturing some data from a file into a variable Post 302076848 by vino on Friday 16th of June 2006 05:30:49 AM
Old 06-16-2006
Code:
[/tmp]$ cat try.ksh
#! /bin/ksh

val=\
"a      b       c       trk_012345678"
echo "$val"
num=${val##*_}
rest=${val%$num}
typeset -Z${#num} final
((num = num+1));
final=$num
echo "$rest$final"
[/tmp]$ ./try.ksh
a       b       c       trk_012345678
a       b       c       trk_012345679

If you want redirect the output to another file, then use
Code:
echo "$rest$final" > test1

 

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LEARN ABOUT DEBIAN

dpmgr

DPMGR(1)						      Quick Database Manager							  DPMGR(1)

NAME

       dpmgr - administration utility for QDBM Depot

SYNOPSIS

       dpmgr create [-s] [-bnum num] name
       dpmgr put [-kx|-ki] [-vx|-vi|-vf] [-keep|-cat] [-na] name key val
       dpmgr out [-kx|-ki] name key
       dpmgr get [-nl] [-kx|-ki] [-start num] [-max num] [-ox] [-n] name key
       dpmgr list [-nl] [-k|-v] [-ox] name
       dpmgr optimize [-bnum num] [-na] name
       dpmgr inform [-nl] name
       dpmgr remove name
       dpmgr repair name
       dpmgr exportdb name file
       dpmgr importdb name file
       dpmgr snaffle [-kx|-ki] [-ox] [-n] name key
       dpmgr version

DESCRIPTION

       This manual page documents briefly the dpmgr commands.

       dpmgr  is  a  utility for debugging Depot and its applications. It features editing and checking of a database. It can be used for database
       applications with shell scripts. This command is used in the above format.  name specifies a database name.  key specifies  the	key  of  a
       record. val specifies the value of a record.

OPTIONS

       A summary of options is included below.	For a complete description, see the file:///usr/share/doc/qdbm-doc/spex.html#depotcli.

       -s     make the file sparse.

       -bnum num
	      specify the number of the elements of the bucket array.

       -kx    treat key as a binary expression of hexadecimal notation.

       -ki    treat key as an integer expression of decimal notation.

       -vx    treat val as a binary expression of hexadecimal notation.

       -vi    treat val as an integer expression of decimal notation.

       -vf    read the value from a file specified with val.

       -keep  specify the storing mode for `DP_DKEEP'.

       -cat   specify the storing mode for `DP_DCAT'.

       -na    do not set alignment.

       -nl    open the database without file locking.

       -start specify the beginning offset of a value to fetch.

       -max   specify the max size of a value to fetch.

       -ox    treat the output as a binary expression of hexadecimal notation.

       -n     do not output the tailing newline.

       -k     output keys only.

       -v     output values only.

SEE ALSO

       qdbm(3), dptsv(1), dpopen(3).

AUTHOR

       QDBM was written by Mikio Hirabayashi <mikio@fallabs.com>.

       This manual page was written by Fumitoshi UKAI <ukai@debian.or.jp>, for the Debian project (but may be used by others).

Man Page							    2005-05-23								  DPMGR(1)
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