Sponsored Content
Top Forums Shell Programming and Scripting Checking existence of file using awk Post 302592102 by Chubler_XL on Sunday 22nd of January 2012 10:27:39 PM
Old 01-22-2012
How about this
Code:
 awk ' { FN=$NF
   if ((getline < FN) > 0) {
       close(FN);
       print FN " exists and is readable"
    }}' infile

 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

checking file existence

Hi, My requirement was to check the existence of a file having a specified pattern.The way i tried to achieve this was if ; then echo "File found" fi an example file having this pattern was 'ilvs_trace01.0124'. it will vary... (3 Replies)
Discussion started by: DILEEP410
3 Replies

2. Shell Programming and Scripting

Checking the existence of a file..

Hi, I am trying to check for the existence of a file using the 'test' and the file existence options. When trying to check for a file with a space in between e.g 'Team List', it gives the following error. learn1: line 3: test: `Team: binary operator expected I am pasting my code below as... (7 Replies)
Discussion started by: igandu
7 Replies

3. Shell Programming and Scripting

Checking for existence of a flat file in UNIX !

Hi All, I have a requirement where in i need to check for existence of a file and later execute some pmcmd commands related to informatica. I tried many ways but was unsuccessful could you please throw some light. Below are the sample codes i wrote. Example 1: #!/bin/ksh... (4 Replies)
Discussion started by: Ariean
4 Replies

4. Shell Programming and Scripting

Checking Multiple file existence

Hi, I want to check multiple files exist or not in a single if statement in korn Shell:confused:. Please help me Thanks (1 Reply)
Discussion started by: lathish
1 Replies

5. Shell Programming and Scripting

Multiple file existence and checking file size

I want to check the files in particular directory are more that 0 Bytes i.e, Non zero byte file. The script should print a msg if all the files in that directory are empty( 0 Byte). (2 Replies)
Discussion started by: lathish
2 Replies

6. Shell Programming and Scripting

Checking the existence of a file before getting last modified

Hi, I am trying to check the existence of a file, from a list of possible filenames: status-A status-B status-C before retrieving the last modified datetime using ls, I want to check it exists or ls will throw an error. So I have tried this: if ; then ls status-* fi But the if... (3 Replies)
Discussion started by: LostInTheWoods
3 Replies

7. Shell Programming and Scripting

checking the file existence using ssh

Hi Can any body say me the reason for below error ssh -o 'StrictHostKeyChecking no' user@client ' && print "1"' I am getting error as "Missing ]":wall: (6 Replies)
Discussion started by: ramesh12621
6 Replies

8. Shell Programming and Scripting

Checking file existence along with condition

Hi am trying to write a script which find the existence of a file from a find command output and perform a task if the file exists. Help me out with the correct syntax . Am trying with the following one but unable to get the output. if then <some tasks> else echo "file not exists" fi (5 Replies)
Discussion started by: rogerben
5 Replies

9. Shell Programming and Scripting

Checking for the file existence

Hi, I have written a script to validate the data file by referreing to the configurtion file. And moving the validated good records and bad records into HDFS. Suppose after 15 mins if i receive one more data fie,then after validation the good and bad records shold be stored in hadoop with the... (8 Replies)
Discussion started by: shree11
8 Replies

10. Shell Programming and Scripting

Command script for checking a file existence

Hello, I have a directory where sometimes appear a certain file name - and I'd like to be notified by email when that happens... so what command or script I may use? e.g. if there's a file named "adam" in the directory named "dir1" then send a mail to "abc@abc.com".. it needs to permanently... (5 Replies)
Discussion started by: netrom
5 Replies
Archive::Zip::MemberRead(3)				User Contributed Perl Documentation			       Archive::Zip::MemberRead(3)

NAME
Archive::Zip::MemberRead - A wrapper that lets you read Zip archive members as if they were files. SYNOPSIS
use Archive::Zip; use Archive::Zip::MemberRead; $zip = Archive::Zip->new("file.zip"); $fh = Archive::Zip::MemberRead->new($zip, "subdir/abc.txt"); while (defined($line = $fh->getline())) { print $fh->input_line_number . "#: $line "; } $read = $fh->read($buffer, 32*1024); print "Read $read bytes as :$buffer: "; DESCRIPTION
The Archive::Zip::MemberRead module lets you read Zip archive member data just like you read data from files. METHODS
Archive::Zip::Member::readFileHandle() You can get a "Archive::Zip::MemberRead" from an archive member by calling "readFileHandle()": my $member = $zip->memberNamed('abc/def.c'); my $fh = $member->readFileHandle(); while (defined($line = $fh->getline())) { # ... } $fh->close(); Archive::Zip::MemberRead->new($zip, $fileName) Archive::Zip::MemberRead->new($zip, $member) Archive::Zip::MemberRead->new($member) Construct a new Archive::Zip::MemberRead on the specified member. my $fh = Archive::Zip::MemberRead->new($zip, 'fred.c') setLineEnd(expr) Set the line end character to use. This is set to by default except on Windows systems where it is set to . You will only need to set this on systems which are not Windows or Unix based and require a line end different from . This is a class method so call as "Archive::Zip::MemberRead"->"setLineEnd($nl)" rewind() Rewinds an "Archive::Zip::MemberRead" so that you can read from it again starting at the beginning. input_record_separator(expr) If the argument is given, input_record_separator for this instance is set to it. The current setting (which may be the global $/) is always returned. input_line_number() Returns the current line number, but only if you're using "getline()". Using "read()" will not update the line number. close() Closes the given file handle. buffer_size([ $size ]) Gets or sets the buffer size used for reads. Default is the chunk size used by Archive::Zip. getline() Returns the next line from the currently open member. Makes sense only for text files. A read error is considered fatal enough to die. Returns undef on eof. All subsequent calls would return undef, unless a rewind() is called. Note: The line returned has the input_record_separator (default: newline) removed. getline( { preserve_line_ending => 1 } ) Returns the next line including the line ending. read($buffer, $num_bytes_to_read) Simulates a normal "read()" system call. Returns the no. of bytes read. "undef" on error, 0 on eof, e.g.: $fh = Archive::Zip::MemberRead->new($zip, "sreeji/secrets.bin"); while (1) { $read = $fh->read($buffer, 1024); die "FATAL ERROR reading my secrets ! " if (!defined($read)); last if (!$read); # Do processing. .... } AUTHOR
Sreeji K. Das <sreeji_k@yahoo.com> See Archive::Zip by Ned Konz without which this module does not make any sense! Minor mods by Ned Konz. COPYRIGHT
Copyright 2002 Sreeji K. Das. This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself. perl v5.18.2 2014-01-08 Archive::Zip::MemberRead(3)
All times are GMT -4. The time now is 12:31 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy