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Top Forums Shell Programming and Scripting FILE_ID extraction from file name and save it in CSV file after looping through each folders Post 302700651 by princetd001 on Thursday 13th of September 2012 11:39:45 PM
Old 09-14-2012
Code:
sasmm_fsbc_durds_id00020532_t20100313192606.dat.trnsfr.gz sasmm_fsbc_durds_id00020513_t20120913003312.dat.trnsfr.gz
and then you say you want the entire filename to be the second field in your output file and say that that field should be:

Code:
sasmm_fsbc_durds_id00020532_t20100313192606.dat sasmm_fsbc_durds_id00020513_t20120913003312.dat
What happened to the .trnsfr.gz at the end of the filenames?

yeah in each folder , the file name ends with
.dat.trnsfr.gz
but when we enter into CSV file UNDER file_name column , it should omit
.trnsfr.gz
for file_id

it is number, it should be extracted from file name itself

in your code , you have not specified output file as CSV,
are you looping through all files inside all folders in a year?
which code is used for extracting id from file id?

how you specify the coulmn names in out put file?

do you know write same logic in simple Shell, Shell Scripts?

---------- Post updated at 10:18 PM ---------- Previous update was at 09:59 PM ----------

if i use this loop, will it loop through all folders?

FILES=`ls -1`
for FILE in $FILES
do

---------- Post updated at 10:27 PM ---------- Previous update was at 10:18 PM ----------

I ran your script, it says error message

[/work/users/po/prince]$ ./testSBI.sh
./testSBI.sh[8]: id=${id:2}: bad substitution


your code

Quote:
#!/usr/bin/env ksh
find 20[0-1][0-9] -type f | while read path
do
name=${path##*/}
name=${name%.trns*}
id=${name%_*}
id=${id##*_}
id=${id:2}
echo ${id/~(+E)^[0]+/} $name
done >output-file


---------- Post updated at 10:39 PM ---------- Previous update was at 10:27 PM ----------

i removed line of code which causes the error
i executed your script without that, it again throw an error

./testSBI.sh[10]: ${id/~(+E)^[0]+/}: bad substitution
 

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TRUNCATE(1)                                                        User Commands                                                       TRUNCATE(1)

NAME
truncate - shrink or extend the size of a file to the specified size SYNOPSIS
truncate OPTION... FILE... DESCRIPTION
Shrink or extend the size of each FILE to the specified size A FILE argument that does not exist is created. If a FILE is larger than the specified size, the extra data is lost. If a FILE is shorter, it is extended and the extended part (hole) reads as zero bytes. Mandatory arguments to long options are mandatory for short options too. -c, --no-create do not create any files -o, --io-blocks treat SIZE as number of IO blocks instead of bytes -r, --reference=RFILE base size on RFILE -s, --size=SIZE set or adjust the file size by SIZE bytes --help display this help and exit --version output version information and exit The SIZE argument is an integer and optional unit (example: 10K is 10*1024). Units are K,M,G,T,P,E,Z,Y (powers of 1024) or KB,MB,... (pow- ers of 1000). SIZE may also be prefixed by one of the following modifying characters: '+' extend by, '-' reduce by, '<' at most, '>' at least, '/' round down to multiple of, '%' round up to multiple of. AUTHOR
Written by Padraig Brady. REPORTING BUGS
GNU coreutils online help: <http://www.gnu.org/software/coreutils/> Report truncate translation bugs to <http://translationproject.org/team/> COPYRIGHT
Copyright (C) 2017 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>. This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. SEE ALSO
dd(1), truncate(2), ftruncate(2) Full documentation at: <http://www.gnu.org/software/coreutils/truncate> or available locally via: info '(coreutils) truncate invocation' GNU coreutils 8.28 January 2018 TRUNCATE(1)
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