Sponsored Content
Top Forums Shell Programming and Scripting if file is NOT empty, then append content to file Post 302469812 by gc_sw on Monday 8th of November 2010 07:55:41 AM
Old 11-08-2010
pravin27:
thanks but where is the check of if file is not zero and date?

joeyg;
bacause my all code block is in awk, i prefer it rather than other ways. if there are alternatives you can surely express it Smilie

Scrutinizer;
thanks dude but can you please write the whole code? i have tried some combinations with if, !-s, NF, NR, etc.. but no results Smilie
 

10 More Discussions You Might Find Interesting

1. 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

2. UNIX for Dummies Questions & Answers

Getting same exit status for empty and non empty file

Hi All, I am checking for a empty input file to do some further action , but I am getting exit status 0 in both the cases , for empty and non empty file both. The value of $? is coming 0 in if part also and else part too. #!/bin/ksh if ]; then echo "data" # exit 0 echo "$?" else... (4 Replies)
Discussion started by: mavesum
4 Replies

3. Shell Programming and Scripting

Delete log files content older than 30 days and append the lastest date log file date

To delete log files content older than 30 days and append the lastest date log file date in the respective logs I want to write a shell script that deletes all log files content older than 30 days and append the lastest log file date in the respective logs This is my script cd... (2 Replies)
Discussion started by: sreekumarhari
2 Replies

4. Shell Programming and Scripting

Sed: replace content from file with the content from file

Hi, I am having trouble while using 'sed' with reading files. Please help. I have 3 files. File A, file B and file C. I want to find content of file B in file A and replace it by content in file C. Thanks a lot!! Here is a sample of my question. e.g. (file A: a.txt; file B: b.txt; file... (3 Replies)
Discussion started by: dirkaulo
3 Replies

5. UNIX for Dummies Questions & Answers

How to append portion of a file content to another file when a certain pattern is matching?

Hi ladies and gentleman.. I have two text file with me. I need to replace one of the file content to another file if one both files have a matching pattern. Example: text1.txt: ABCD 1234567,HELLO_WORLDA,HELLO_WORLDB DCBA 3456789,HELLO_WORLDE,HELLO_WORLDF text2.txt: XXXX,ABCD... (25 Replies)
Discussion started by: bananamen
25 Replies

6. Shell Programming and Scripting

Change the file name and copy old file content to new file names.

Hi, I have a files in a directory as below :- ls -1 mqdepth-S1STC02 proc-mq-S1STC01 proc-mq-S1STC02 proc-mq-S1STC03 Whereever i have S1STC i need to copy them into new file with file name S2STC. expected output :- ls -1 mqdepth-S2STC02 proc-mq-S2STC01 proc-mq-S2STC02... (3 Replies)
Discussion started by: satishmallidi
3 Replies

7. 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

8. Shell Programming and Scripting

How to remove exisiting file content from a file and have to append new file content?

hi all, i had the below script x=`cat input.txt |wc -1` awk 'NR>1 && NR<'$x' ' input.txt > output.txt by using above script i am able to remove the head and tail part from the input file and able to append the output to the output.txt but if i run it for second time the output is... (2 Replies)
Discussion started by: hemanthsaikumar
2 Replies

9. Shell Programming and Scripting

Insert content of a file to another file at a line number which is given by third file

Hi friends, here is my problem. I have three files like this.. cat file1.txt ======= unix is best unix is best linux is best unix is best linux is best linux is best unix is best unix is best cat file2.txt ======== Windows performs better Mac OS performs better Windows... (4 Replies)
Discussion started by: Jagadeesh Kumar
4 Replies

10. Shell Programming and Scripting

awk to reformat output if input file is empty, but not if file has data in it

The below awk improved bu @MadeInGermany, works great as long as the input file has data in it in the below format: input chrX 25031028 25031925 chrX:25031028-25031925 ARX 631 18 chrX 25031028 25031925 chrX:25031028-25031925 ARX 632 14... (3 Replies)
Discussion started by: cmccabe
3 Replies
RDUP-UP(1)							       rdup								RDUP-UP(1)

NAME
rdup-up - update a directory tree with a rdup archive SYNOPSIS
rdup-up [OPTION]... DIRECTORY DESCRIPTION
With rdup-up you can update an (possibly) existing directory structure with a rdup archive. The rdup archive has to be given to rdup-up's standard input. Username and uids rdup outputs both the username and uid, the receiving system (which may be a totally different system) checks if the username and uid match. If the username and uid don't match the (numeric) uid is used on the file. The same holds true for the groupname and gid. OPTIONS
-n Do a dry-run and do not create anything on disk. -t Create DIRECTORY (ala mkdir -p) if it does not exist. -s N Strip N path components from a pathname. If the resulting pathname is empty after this operation it is skipped. Be careful however with the following structure: /foo /foo/bar /foo/bar/bla.txt /foo/blork/bla.txt With rdup-up -s2 this will leave: <empty> <empty> /bla.txt /bla.txt And the last 'bla.txt' will overwrite the previous one, this will happen without warnings. -r PATH This option is related to the -s option, but works different. The string PATH is removed from (the beginning of) each pathname. With -r /home/backup the pathname /home/backup/bin/mycmd becomes /bin/mycmd. The same could be done with -s 2, but then you need to count the slashes. Note -s is always performed before -r. -v Be more verbose and echo the processed files to standard output. -vv Be even more verbose and echo processed file and the uid and gid information to standard output. -T Show a table of contents of the rdup stream received (ala tar -tf -). With -T the directory argument is optional. -T unsets any verbose (-v) options. -h A short help message. -V Show the version. EXIT CODE
rdup-up return a zero exit code on success, otherwise 1 is returned. AUTHOR
Written by Miek Gieben. REPORTING BUGS
Report bugs to <miek@miek.nl>. SEE ALSO
http:/www.miek.nl/projects/rdup/ is the main site of rdup. Also see rdup(1), rdup-tr(1) and rdup-backups(7). COPYRIGHT
Copyright (C) 2005-2010 Miek Gieben. This is free software. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. Licensed under the GPL version 3. See the file LICENSE in the source distribution of rdup. 1.1.11 13 Dec 2008 RDUP-UP(1)
All times are GMT -4. The time now is 06:06 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy