Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: cowardly refusing to create an empty archive
Top Forums Shell Programming and Scripting cowardly refusing to create an empty archive Post 302573837 by agama on Tuesday 15th of November 2011 08:17:22 PM
Old 11-15-2011
Add -r to the xargs. This should prevent xargs from running the tar if there isn't anything on the input.


However, you really need to reconsider using tar with xargs. If the filename arguments are long enough to cause xargs to run a second tar command you'll overwrite the first and it will appear that you only got the last n files in your archive.


Try this in a directory with a few files and see what happens:
Code:
  ls | xargs -L 1 tar -czvf foo.tar.gz
echo "contents:"
gzip -dc foo.tar.gz|tar -tvf -

The output from the -v will indicate that all files were passed to tar, but the table of contents will show only one file. (-L causes xargs to use at most one input line per invocation simulating what it would do if it needed to invoke multiple instances of tar)
Last edited by agama; 11-15-2011 at 09:20 PM.. Reason: clarity
 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Create Year directory, date subdirectory and archive the file

Hi, After checking all the UNIX threads, I am able to come up with a solution so far. I am working on a shell script where it moves the files to a certain directory. The conditions to check are 1) Check if the file exists in the current directory. 2) Check if the destination directory... (2 Replies)
Discussion started by: madhunk
2 Replies

2. UNIX for Dummies Questions & Answers

create a archive of old file

i need a script which will create a archive of the files older than 10 days........ (2 Replies)
Discussion started by: jayaramanit
2 Replies

3. Shell Programming and Scripting

simultaneously create three empty files?

I can't get touch to simultaneously create three empty files file1, file2, file3. I tried:$ touch filebut all I got was one file:$ fileWhat did I do wrong? (4 Replies)
Discussion started by: na5m
4 Replies

4. UNIX for Dummies Questions & Answers

create tar archive without preserving directory structure?

I am adding some individual files to a tar archive and would like them to be added to the archive without any directory hierarchy, even though the files themselves exist in levels of hierarchy. Unfortunately, tar seems to always preserve the directory hierarchy when it adds the files. Here is... (2 Replies)
Discussion started by: Special_K
2 Replies

5. Shell Programming and Scripting

script assistance needed - create an archive of INI files

First and foremost - me != unix bubba. Here is the situation. We have a box with data AND settings in the same directory path. (Data files aren't in the SAME directories as settings.) I need a script that generates a tarred-up archive of only the INI files with the directory structure. We... (2 Replies)
Discussion started by: hindesite
2 Replies

6. UNIX Desktop Questions & Answers

how to create empty wav file

Dear All, Kindly explain me a command in unix to create a empty wav file with example. Thanks in Advance! (1 Reply)
Discussion started by: thillai_selvan
1 Replies

7. Shell Programming and Scripting

Create archive and nil the content of log file using script

Plese help I need a urgent requirement. Ex: test.log requirement : using shell script I need to archive the log file and nil and the content of (test.log) file to 0 kb and then in the archive folder log files are name to test.tar test1.tar test2.tar EX: /home/abc/ test.log ... (1 Reply)
Discussion started by: johney1981
1 Replies

8. Shell Programming and Scripting

Create empty files from a list on file

Hello Guys. Please I would like to create empty files from a list In file1 will be the followin values, so i will like to create for each name a empty file. file1 2191off-r0.sps 2192off-r0.sps 2193off-r0.sps 2194off-r0.sps 2195off-r0.sps So I need to get 5 empty files. Thanks for... (7 Replies)
Discussion started by: jiam912
7 Replies

9. Shell Programming and Scripting

Append timestamp create .trg file for all content of an unzipped archive

Hi, I have a test.zip archive that contains test.zip --> (file_1.txt, file_2.txt , file_3.txt) I need to unzip the file like this, file_1_timestamp.txt file_1_timestamp.trg file_2_timestamp.txt file_2_timestamp.trg file_3_timestamp.txt file_3_timestamp.trg Could you please let me know... (7 Replies)
Discussion started by: Shandel
7 Replies

10. Debian

Need a Debian 8 jessie archive, or a solution to create from cdrom.

I need a debian 8 jessie mipsel for create packages for my vuduo(the system is identical to a Debian 8 mipsel environment). I have some problems. I usually use Slackware14.2+crosscompile. For some packages (tcpdump,rsync) works without problem, for other(extundelete for example) not So I decide... (1 Reply)
Discussion started by: Linusolaradm1
1 Replies

LEARN ABOUT CENTOS

zip_set_default_password

ZIP_SET_DEFAULT_PASSWORD(3)				     Library Functions Manual				       ZIP_SET_DEFAULT_PASSWORD(3)

NAME

       zip_set_default_password - set default password for encrypted files in zip

LIBRARY

       libzip (-lzip)

SYNOPSIS

       #include <zip.h>

       int zip_set_default_password(struct zip *archive, const char *password);

DESCRIPTION

       The  zip_set_default_password  function	sets  the  default password used when accessing encrypted files.  If password is NULL, the default
       password is unset.

       If you prefer a different password for single files, use zip_fopen_encrypted(3) instead of zip_fopen(3).  Usually, however, the same  pass-
       word is used for every file in an zip archive.

RETURN VALUES

       Upon successful completion 0 is returned.  Otherwise, -1 is returned and the error information in archive is set to indicate the error.

ERRORS

       zip_set_default_password fails if:

	      [ZIP_ER_MEMORY]
		  Required memory could not be allocated.

SEE ALSO

       libzip(3), zip_fopen(3), zip_fopen_encrypted(3)

AUTHORS

       Dieter Baron <dillo@giga.or.at> and Thomas Klausner <tk@giga.or.at>

NiH								  January 3, 2011				       ZIP_SET_DEFAULT_PASSWORD(3)
All times are GMT -4. The time now is 11:50 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy