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Top Forums Shell Programming and Scripting Script to find string based on pattern and search for its corresponding rows in column Post 303037204 by as7951 on Thursday 25th of July 2019 02:42:45 PM
Old 07-25-2019
Hi @Scrutinizer.. issue is, in output file each line has to start with string containing 9K like below .

Code:
GL_0BC_901_1AG_A_CASR9KTR176,BGL_KMR_919_1AC_B_CASR920R899
BGL_0BC_901_1AG_A_CASR9KTR176,BGL_CHT_903_1AC_B_CASR920R879,BGL_BAM_912_2AC_B_CASR920R879,BGL_BAM_912_1AC_B_CASR920R879,BGL_BAM_907_1AC_B_CASR920R879

For example, consider below sample input file :

Need to grep row whose string contains 9K in column 1 and then grep its corresponding row in column 2. Suppose check for 9K1 then grep A1, check for A1 in column 1 if not, output result as shown in below expected output file
Then again check for 9K1, grep A2, look for A2 in column1, if found grep its corresponding row value B2.
Now check for B2 value in column 1, then grep for C2 instead of A2 as we have already considered previously in lookup. Now look for C2 in column and grep D2 instead of B2.
This needs to be checked for all rows in column 1 that contains 9K, as there can be rows with value 9K2, 9K3, 9K4 in column 1 with corresponding data in column2.

Sample Input File :
Code:
9K1,A1
9K1,A2
9K1,A3
9K1,A4 
9K1,A5 
A2,B2
B2,A2
B2,C2
C2,B2
C2,D2
A5,B5
B5,C5
B5,A5
9K1,A6
A6,B6
B6,A6
B6,C6

Output required :

Code:
9K1,A1
9K1,A2,B2,C2,D2
9K1,A3
9K1,A4
9K1,A5,B5,C5
9K1,A6,B6,C6

But below is output returned by code.(which is not as expected output required)

Code:
9K1,A3
9K1,A4
9K1,A5
9K1,A6,B6,C6


Last edited by as7951; 07-25-2019 at 11:18 PM..
 

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CG(1)																	     CG(1)

NAME
cg - Recursively grep for a pattern and store it. SYNOPSIS
cg [ -l ] | [ [ -i ] pattern [ files ] ] DESCRIPTION
cg does a search though text files (usually source code) recursively for a pattern, storing matches and displaying the output in a human- readable fashion. It is intended to give some of the functionaly of AT&T's cscope(1) tool, with the advantages of simplicity and not being language-specific. The script will colorize output if configured as such. It is typically run with a Perl regular expression to search for. The search can be made case insensitive by using the -i option. A list of files may also be specified with an additional argument after the pattern. Put the files pattern in quotes to make it be matched by Perl rather than by the shell. Running the script with no arguments will recall the results of the previous search. After the search, entries found can be edited using the vg(1) script. The -l option shows the last log made. SOME EXAMPLES
cg - alone recalls the previous search results. cg -i pattern - search the default list of files for all files matching the pattern (and case-insensitively). cg pattern '*.c' - search recursively for pattern in all *.c files. This automatically converts '*' to '.*' and '.' to '.' for you and does a Perl pattern match on all files in the tree. cg pattern *.c - search through the shell-expanded list of *.c files, so not done recursively (in other words, only the files your shell pass to the script as arguments). cg -l - show the last log made. COMMAND-LINE OPTIONS -i Do a case-insensitive search. -l Show the last log made. -p Toggle the default pager option. cg has a bulit-in pager function, which can be enabled or disabled by default (in .cgvgrc). If the default is enabled, this option disables the pager; if the default is disabled, this option enables it. -P Force the built-in pager to be disabled. FILES
${HOME}/.cglast Log file of the last search. ${HOME}/.cgvgrc Per-user configuration file (if the defaults are not desireable). ${HOME}/.cgvg/* Log files in $HOSTNAME.shell_pid form with the log of the last search. SEE ALSO
vg(1), perl(1), find(1), grep(1), cscope(1) AUTHOR
cg was written by Joshua Uziel <uzi@uzix.org>. 13 Mar 2002 CG(1)
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