Sponsored Content
Top Forums Shell Programming and Scripting Unix file empty.. but size is greater than zero??/ Post 302360056 by justchill on Thursday 8th of October 2009 04:56:09 AM
Old 10-08-2009
Unix file empty.. but size is greater than zero??/

Hi,


I have a file by redirecting some contents in unix shell.
Even when there is no content that is being redirected, the file size still shows greater than zero.

but even if there is no matching pattern the file APPRES has size greater than 0bytes.
Code:
awk -f AA.awk $logfile>APPRES
size=`ls -l APPRES | awk '{print $5 }'`
echo $size

output:
4

if test -s APPRES always returns true if there is no matching pattern or not.

how do i check if a file has no contents in this case

Last edited by Yogesh Sawant; 10-08-2009 at 07:00 AM.. Reason: added code tags
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

File size greater than 0

ok I want to know how to touch a file and find out that it is greater than 0 then if it is not I want to fail the job other wise I want to success amnd go on. Can anyone help. Thanks Shannon Kammer (1 Reply)
Discussion started by: skammer1234
1 Replies

2. Shell Programming and Scripting

Can I find wether a particular file exist and size greater than zero...help please

Can I find wether a particular file exist and size greater than zero in one line command. similar to this if && something in one if test .... e.g. if 1.) is it possible ? ... if yes how 2.) what would be the return type in case there is success or failure. I mean if both are... (4 Replies)
Discussion started by: guhas
4 Replies

3. UNIX for Dummies Questions & Answers

Empty directories having different size

$ls -lrt mydir total 12 drwxrwxrwx 2 nobody nobody 512 Aug 8 11:51 tmp drwxrwxrwx 2 nobody nobody 4608 Jan 19 12:20 web.cache $ ls -lrt mydir/web.cache/ total 0 $ ls -lrt mydir/tmp/ total 0 Can anyone explain me the above results? I know the o/p of ls, but this... (3 Replies)
Discussion started by: rahulrathod
3 Replies

4. UNIX for Dummies Questions & Answers

Trying to empty file using > but the file size increasing when next append

AIX 5.3 / KSH I have a Java application which creates a log file a.log. I have a KSH script which does the following action cp a.log /directory2/b.log > a.log After this the file size goes to 0 as per "ls -l" Then next time when the application writes into this file, the file size... (4 Replies)
Discussion started by: firdousamir
4 Replies

5. Shell Programming and Scripting

Filter the file list greater then the size specified by user

HI, Can any tell me how to filter the list of files greater than the size specified by user. The size should be provided by user as an input. Regards shiva (6 Replies)
Discussion started by: shivu
6 Replies

6. Shell Programming and Scripting

shell script to check file size greater than 50M

Hi All, OS:AIX 64 bits using korn shell. Requirement: shell script to check file size greater than 50M and send mail alert. Thanks for your time! Regards, (3 Replies)
Discussion started by: a1_win
3 Replies

7. Shell Programming and Scripting

Symbolic link to an empty file shows size 2

Hi, I have created an empty file and a symbolic link to a file. But when I issue the following commands, I am getting the output 2. stat -c "%s" linkfile du -hb linkfile Why this is happening? (4 Replies)
Discussion started by: royalibrahim
4 Replies

8. UNIX for Dummies Questions & Answers

look for file size greater than "0" of specific pattern and move those to another directory

Hi , i have some files of specific pattern ...i need to look for files which are having size greater than zero and move those files to another directory.. Ex... abc_0702, abc_0709, abc_782 abc_1234 ...etc need to find out which is having the size >0 and move those to target directory..... (7 Replies)
Discussion started by: dssyadav
7 Replies

9. Emergency UNIX and Linux Support

Script to fill the file system mount with empty files to desired size

We are regularly using for our testing, where we are manually filling up the mount with desired size with following command dd if=/dev/zero of=file_2GB bs=2048000 count=2000 We are planning to automate the task where taking input for % of size as one input and the name of the file system... (8 Replies)
Discussion started by: chandu123
8 Replies

10. UNIX for Beginners Questions & Answers

Find command size greater than or equalto

How do I find the files greater than or equal to a given size using find command. find ./ -size +0k --> Lists files greater than 0K find ./ -size 0k --> Lists the file size equal to 0K. I have other conditions to check, hence using find command. Thanks in advance. (4 Replies)
Discussion started by: deepakwins
4 Replies
RBASH(1)						      General Commands Manual							  RBASH(1)

NAME
rbash - restricted bash, see bash(1) RESTRICTED SHELL
If bash is started with the name rbash, or the -r option is supplied at invocation, the shell becomes restricted. A restricted shell is used to set up an environment more controlled than the standard shell. It behaves identically to bash with the exception that the follow- ing are disallowed or not performed: o changing directories with cd o setting or unsetting the values of SHELL, PATH, ENV, or BASH_ENV o specifying command names containing / o specifying a file name containing a / as an argument to the . builtin command o specifying a filename containing a slash as an argument to the -p option to the hash builtin command o importing function definitions from the shell environment at startup o parsing the value of SHELLOPTS from the shell environment at startup o redirecting output using the >, >|, <>, >&, &>, and >> redirection operators o using the exec builtin command to replace the shell with another command o adding or deleting builtin commands with the -f and -d options to the enable builtin command o using the enable builtin command to enable disabled shell builtins o specifying the -p option to the command builtin command o turning off restricted mode with set +r or set +o restricted. These restrictions are enforced after any startup files are read. When a command that is found to be a shell script is executed, rbash turns off any restrictions in the shell spawned to execute the script. SEE ALSO
bash(1) GNU Bash-4.0 2004 Apr 20 RBASH(1)

Featured Tech Videos

All times are GMT -4. The time now is 05:10 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy