12-25-2017
Squence number manipulation in Shell
Hello Forum,
I am receiving a file daily like ASAD but at the end there is a counter like 0012 (4 digits) so my every next file +1
I want to write a control script and check the last sequence number.Let's say If I receive a file ASAD0012 then after receiving this file I wan to say that next seq_number is "0013"
How can manipulate this logic?
Thx All
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RECEIVE(1) General Commands Manual RECEIVE(1)
NAME
receive - receive files from the sendfile spool
SYNOPSIS
receive [ -d ] [ -r ] [ -k ] [ -P ] [ -S ] [ -Z spool ] [ -q ] [ -ffrom ] file [...]
receive -n [ -d ] [ -r ] [ -k ] [ -P ] [ -S ] [ -Z spool ] [ -q ] file-number [...]
receive [ -s ] [ -l ] [ -L ] [ -R ] [ -ffrom ]
receive -b user[@host] [ -k ] [ -f"from" ] file [...]
receive -b user[@host] [ -k ] [ -f"from" ] -n file-number [...]
receive -b user[@host] [ -k ] -a
DESCRIPTION
receive files from the sendfile spool which has been sent to you.
If there is already a file with the same name you will be prompted for overwriting or renaming.
Allowed wildcards in file names are: * ? [abc] [^abc]
CAUTION: you have to put wildcards and other special characters in '' quotes to hide them for interpretation by your shell.
OPTIONS
-n receive file number(s)
-d delete instead of receive
-a receive (or delete or bounce) all files
-r rename before receiving
-k keep files in spool after receiving
-P pipe files to stdout
-S receive only pgp-signed files
-s list files in short format
-l list files
-L list files and look inside archives, too
-R renumber files in spool
-b bounce (forward) files to another recipient
-q quiet mode: no questions asked
-fuser all actions refer only to files from this user
-Z spool
specify an alternate spool directory
EXAMPLES
receive -L
list all files in long format.
receive 'blubb*'
receive all files starting with string "blubb".
receive -daf microsoft.com
delete all files from microsoft.com sites.
receive -b framstag@bofh '*.jpg'
bounce all *.jpg-files to framstag@bofh.
FILES
/var/spool/sendfile The sendfile spool directory.
/var/spool/sendfile/$USER/log
A log of the last transfers.
/etc/sendfile.deny Users which are not allowed to receive files or messages (set by root).
SEE ALSO
sendfile(1).
AUTHOR
Ulli Horlacher - framstag@rus.uni-stuttgart.de
3rd Berkeley Distribution RECEIVE(1)