Hi,
I want to write bash script that will keep on looking for files in a directory and if any file exists, it processes them. I want it to be a background process, which keeps looking for files in a directory.
Is there any way to do that in bash script?
I can loop through all the files like... (4 Replies)
hello
i have a requirement where i have a direcotry in which i get files in the format
STOCKS.20080114.dat
STOCKS.20080115.dat
STOCKS.20080117.dat
STOCKS.20080118.dat
i need to loop through the directory and sort by create date descending order and i need to process the first file.
... (1 Reply)
hi all
i have some files present in a directory
i want to loop through all the files in the directory
each time i loop
i should change the in_file parameter in the control file and load it into a table using sql loader
there is only one table where i have to load alll the files ... (3 Replies)
Hi,
I am new to unix and shell scripting,can anybody help me in sctipting a requirement.
my requirement is to get the latest directory the name of the directory will be like CSB.monthdate_time stamp
like CSB.Sep29_11:16 and CSB.Oct01_16:21.
i need to pick the latest directory.
in the... (15 Replies)
I was looking to get some help with copying files in one directory to another using a for-in loop. My script file is called copyfile and here is what I have:
for file in $(ls -a $1)
do
cp $file ~/dir-2
done
When I run copyfile dir-1 this is what I get
cp: omitting directory `.'... (1 Reply)
Hi,
I would like to write a loop to change the names of files in a directory. The files are called data1.txt through data1000.txt. I'd like to change their names to a1.txt through a1000.txt. How do I go about doing that? Thanks! (2 Replies)
Hello
How do I loop through files in a specific directory ?
This script is not working!
#! /bin/bash
FILES=/usr/desktop/input/*
For f in $FILES;
do
awk '-v A="$a" -v B="$b" {$6=($1-64)/2 ;$7=((10^($6/10))/A)^(1/B) ; print}' OFS="\t" $f > /root/Desktop/output/$f.txt;
done
... (7 Replies)
I am trying to loop through files in a directory, and sort each file. No matter what changes I make to the code, I get the following errors:
'aunch.sh: line 4: syntax error near unexpected token `do
'aunch.sh: line 4: `for f in ${FILES}/*; do
#!/bin/bash
FILES=$(pwd)
for f in ${FILES}/*;... (1 Reply)
I am trying to loop through files in a directory, and sort each file. No matter what changes I make to the code, I get the following errors:
'aunch.sh: line 4: syntax error near unexpected token `do
'aunch.sh: line 4: `for f in ${FILES}/*; do
#!/bin/bash
FILES=$(pwd)
for f in ${FILES}/*;... (6 Replies)
I have one question.
On the directory I have many files start with
DB.DAILYxxxxxxx.YYYYMMDD.HHMMSS
and I have several files with other format, like
LET.20170310
daily.20170310
tba.20170310
How can I exclude from my loop DB.DAILY files?
I tried
ls *20170310* | while read... (4 Replies)
Perl::Critic::Policy::InputOutput::ProhibitTwoArgOpen(3)User Contributed Perl DocumentatioPerl::Critic::Policy::InputOutput::ProhibitTwoArgOpen(3)NAME
Perl::Critic::Policy::InputOutput::ProhibitTwoArgOpen - Write "open $fh, q{<}, $filename;" instead of "open $fh, "<$filename";".
AFFILIATION
This Policy is part of the core Perl::Critic distribution.
DESCRIPTION
The three-argument form of "open" (introduced in Perl 5.6) prevents subtle bugs that occur when the filename starts with funny characters
like '>' or '<'. The IO::File module provides a nice object-oriented interface to filehandles, which I think is more elegant anyway.
open( $fh, '>output.txt' ); # not ok
open( $fh, q{>}, 'output.txt' ); # ok
use IO::File;
my $fh = IO::File->new( 'output.txt', q{>} ); # even better!
It's also more explicitly clear to define the input mode of the file, as in the difference between these two:
open( $fh, 'foo.txt' ); # BAD: Reader must think what default mode is
open( $fh, '<', 'foo.txt' ); # GOOD: Reader can see open mode
This policy will not complain if the file explicitly states that it is compatible with a version of perl prior to 5.6 via an include
statement, e.g. by having "require 5.005" in it.
CONFIGURATION
This Policy is not configurable except for the standard options.
NOTES
There are two cases in which you are forced to use the two-argument form of open. When re-opening STDIN, STDOUT, or STDERR, and when doing
a safe pipe open, as described in perlipc.
SEE ALSO
IO::Handle
IO::File
AUTHOR
Jeffrey Ryan Thalhammer <jeff@imaginative-software.com>
COPYRIGHT
Copyright (c) 2005-2011 Imaginative Software Systems. All rights reserved.
This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
perl v5.16.3 2014-06-09 Perl::Critic::Policy::InputOutput::ProhibitTwoArgOpen(3)