Sponsored Content
Top Forums Shell Programming and Scripting Check if a text file is empty or not (using ls -s) Post 302395950 by methyl on Wednesday 17th of February 2010 10:18:14 AM
Old 02-17-2010
Try "test -s" which abbreviates the following:

Code:
#!/bin/bash
if [ -s "test.txt" ]
then
         echo "Your file is not empty"
else
         echo "Your file is empty"
fi

 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

How to check for empty file in Perl?

Hi, May I know how to check for empty file in Perl. Iam missing something, somewhere. #!/usr/bin/perl my $open_dir = '/path/'; my $file; my $ma = "abc_.*.\.psv\$" opendir(VAR, $open_dir) or die "Can't open $oepn_dir: $!\n"; while( defined ($file = readdir VAR) ) #read all... (1 Reply)
Discussion started by: deepakwins
1 Replies

2. UNIX for Dummies Questions & Answers

How to check if a file is empty?

Hi Masters..... I have problem !!! I need to check number of records in a file and if it is zero or file is empty i need to do some task. if ; then echo "File s empty" else echo "Not empty" fi so how to check this condition. I used wc -l < filename.txt => 1 for zero records same result... (1 Reply)
Discussion started by: shreekrishnagd
1 Replies

3. UNIX for Dummies Questions & Answers

to check if file is empty or not and return a non zero value

Hi All, I am new to unix worldd . I need to check a file1 if its empty or not. If its empty then return a non zero value say 99 could you pls let me know the perl script for this. (2 Replies)
Discussion started by: mavesum
2 Replies

4. Shell Programming and Scripting

check if file is empty

How do I check if a file is empty in a sh script I want to test in my shell script if the output file is empty and if it is do one thing and if it isnt empty do another? any ideas? (8 Replies)
Discussion started by: stolz
8 Replies

5. Shell Programming and Scripting

Need to check for empty file in C shell script

I am running a C shell script. I have an output file from a previous step and I need to run "something" in the next step to check if the file is empty. If the file is empty, then the job script should finish EOJ. If the file is not empty then the job script should abend. Please help Thanks. (4 Replies)
Discussion started by: jclanc8
4 Replies

6. Shell Programming and Scripting

Condition to check whether configuration file is empty or not?

CMD=$(find "${Release_Container}" -iname "${Release_Name}"_Release.txt) for i in `cat $CMD` do if ];then cd ${Sandbox_dir} CMD1=$(find "${Sandbox_dir}"/* -iname "${Release_Name}" -type d | awk -F/ '{print $(NF)}' | head -1 ) if ];then echo -e "################### CHECKOUT START... (2 Replies)
Discussion started by: anuragpgtgerman
2 Replies

7. UNIX for Dummies Questions & Answers

Check if file is empty with variables, bash

Hello again! I have some trouble with scripting in bash. In the following script I read from a folder with the files line0_Ux.xy line1_Ux.xy line2_Ux.xy . . . Some of the files are empty. For those I would like to print a "0" in list. I think the problem with the code is that... (4 Replies)
Discussion started by: bjoern456
4 Replies

8. Shell Programming and Scripting

Empty file check

Hi gurus , I have two files and i want to perform different action based on the condition if both or either is empty If then Do something elif then do something elif then do something else do something fi I have tried the below bt its not... (4 Replies)
Discussion started by: r_t_1601
4 Replies

9. Shell Programming and Scripting

How to check if the file is empty or has blank space.?

Hi, I am using KSH. I am trying to check if the output file is empty or not. I tried with ] but what i see is my file is empty but still manages to have a size of 1 instead of 0. But my file doesnot have anything its empty. I am not sure how to check this. can any one help? (10 Replies)
Discussion started by: Sharma331
10 Replies

10. Shell Programming and Scripting

To check whether the file is empty or not in shell script (sh)

Hi All, I need to check a file whether it exists and also whether it is empty or not. I have a code for this but it is not working as per my requirement. Can anyone pls suggest me on this. function funcFLSanityCheck { if then echo "${varFLSentFileListPath}/${varFLSentFileName}... (7 Replies)
Discussion started by: Arun1992
7 Replies
SYSLOGOUT(8)						      System Manager's Manual						      SYSLOGOUT(8)

NAME
syslogout - modular centralized shell logout mechanism DESCRIPTION
syslogout is a generic approach to enable centralized shell logout actions for all users of a given system in a modular and centralized way mostly aimed at avoiding work for lazy sysadmins. It has only been tested to work with the bash shell. It basically consists of the small /etc/syslogout shell script which invokes other small shell scripts having a .bash suffix which are con- tained in the /etc/syslogout.d/ directory. The system administrator can drop in any script he wants without any naming convention other than that the scripts need to have a .bash suffix to enable automagic sourcing by the /etc/syslogout script. For shell sessions, the contents of /etc/syslogout.d/" will be sourced by every user at logout if the following lines are present in his $HOME/.bash_logout: if [ -f /etc/syslogout ]; then . /etc/syslogout fi If used for X sessions it is advisable to include the former statement into the Xreset script of the X display manager instead to prevent that closing of an terminal emulator window yields unexpected results in your running X session if your X11 terminal emulator is using a login shell. Be sure then to run it under the user-id of the X session's user. See the example files in /usr/share/doc/syslogout/ for illustration. Users not wanting /etc/syslogout to be sourced for their environment can easily disable it's automatic mechanism. It can be disabled by simply creating an empty file called $HOME/.nosyslogout in the user's home directory using e.g. the touch(1) command. Any single configuration file in /etc/syslogout.d/ can simply be overridden by any user by creating a private $HOME/.syslogout.d/ directory which may contain a user's own version of any configuration file to be sourced instead of the system default. It's names have just to match exactly the system's default /etc/syslogout.d/ configuration files. Empty versions of these files contained in the $HOME/.syslo- gout.d/ directory automatically disable sourcing of the system wide version. Naturally, users can add and include their own private scripts to be automagically executed by /etc/syslogout at logout time. OPTIONS
There are no options other than those dictated by shell conventions. Anything is defined within the configuration scripts themselves. SEE ALSO
The README files and configuration examples contained in /usr/share/doc/syslogout/ and the manual page for bash(1), xdm(1x), xdm.options(5), and wdm(1x). Recommended further reading is everything related with shell programming. If you need a similar mechanism for executing code at login time check out the related package sysprofile(8) which is a very close compan- ion to syslogout. BUGS
syslogout in its current form is mainly restricted to bash(1) syntax. In fact it is actually a rather embarrassing quick and dirty hack than anything else - but it works. It serves the practical need to enable a centralized bash configuration until something better becomes available. Your constructive criticism in making this into something better" is very welcome. Before i forget to mention it: we take patches... ;-) AUTHOR
syslogout was developed by Paul Seelig <pseelig@debian.org> specifically for the Debian GNU/Linux system. Feel free to port it to and use it anywhere else under the conditions of either the GNU public license or the BSD license or both. Better yet, please help to make it into something more worthwhile than it currently is. SYSLOGOUT(8)
All times are GMT -4. The time now is 02:39 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy