07-18-2016
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The UNIX and Linux Forums.
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hi all,
Can any one tell me how to empty the contents of a file in unix without using the following sequence : rm <file> ; touch <file>
is there any command in unix??
is it possible through shell scripting? If so, how?
-krishna (7 Replies)
Discussion started by: kris_kris
7 Replies
2. UNIX for Dummies Questions & Answers
I have a folder with many subdirectories and i need to set the modified date to today for everything in it. Please help, thanks!
I tried something i found online, find . -print0 | xargs -r0 touch
but I got the error: xargs: illegal option -- r (5 Replies)
Discussion started by: glev2005
5 Replies
3. Homework & Coursework Questions
Use and complete the template provided. If you don't, your post may be deleted!
1. The problem statement, all variables and given/known data:
Write a single command to create a new empty file in P1 called cloud9, I have to do it from my current working directory which is P3 cd ../ away
P1... (1 Reply)
Discussion started by: dat350z
1 Replies
4. Shell Programming and Scripting
Hi,
Please help me,
i need a single line command for te below steps
1: listing a directory
2: searching a particular pattern in the names and creating the zip files of each
eg :
ls -lrt | grep jil | awk '{print $9}'
output is
kap.jil
pranabjil
pranabjil1
pranabjil2... (1 Reply)
Discussion started by: pranabrana
1 Replies
5. Shell Programming and Scripting
I would like to empty multiple files contents (without delete the file) which have similar name to begin with.
e.g.
log1.txt
log2.txt
log3.txt
log4.txt
I know cat /dev/null will do the job but that only apply to a single file. But when i tried cat /dev/null > {} \; that doesnt do... (7 Replies)
Discussion started by: kin
7 Replies
6. Shell Programming and Scripting
I have a log directory:
/logs/foo.log
/logs/bar.log
/logs/err.out
I'm trying to find a way to
> /logs/*.log
> /logs/*.out
to blank them out, but of course, that doesn't work.
Any suggestions? (4 Replies)
Discussion started by: Validatorian
4 Replies
7. Shell Programming and Scripting
Hi,
i need a single command to create multiple empty files(no trailing lines as well) and empty the files if already existing.
please let me know or if this has been ansered, if some ocan share the link please, thanks
> newfile.txt
or
:> newfile.txt
do not work (4 Replies)
Discussion started by: Onkar Banerjee
4 Replies
8. Shell Programming and Scripting
I am passing multiple files in awk & since one of the file is empty(say file3) so the same gets skipped & logic goes for toss. Need suggestion/help in checking and putting additional checks for the same
awk -F, 'FNR==1 {++filecounter}
filecounter==1 {KRL=$2;next}
filecounter==2... (8 Replies)
Discussion started by: siramitsharma
8 Replies
9. Shell Programming and Scripting
Currently using the below script to being all compressed files .gz files from source folder and appending to the target txt file uncompressed.
Teh target txt file is getting too large in size, right now the size of the target txt file is almost 350GB
hadoop fs -text... (3 Replies)
Discussion started by: cplusplus1
3 Replies
10. UNIX for Beginners Questions & Answers
I am using below code to split files based on blank lines but it does not work.
awk 'BEGIN{i=0}{RS="";}{x="F"++i;}{print > x;}'
Your help would be highly appreciated
find attachment of sample.txt file (2 Replies)
Discussion started by: imranrasheedamu
2 Replies
LEARN ABOUT OPENSOLARIS
touch
touch(1B) SunOS/BSD Compatibility Package Commands touch(1B)
NAME
touch - change file access and modification times
SYNOPSIS
/usr/ucb/touch [-acfm] file...
DESCRIPTION
touch sets the access and modification times of each file to the current time. file is created if it does not already exist.
OPTIONS
-a Change the access time of file. Do not change the modification time unless -m is also specified.
-c Do not create file if it does not exist.
-f Attempt to force the touch in spite of read and write permissions on file.
-m Change the modification time of file. Do not change the access time unless -a is also specified.
USAGE
See largefile(5) for the description of the behavior of touch when encountering files greater than or equal to 2 Gbyte ( 2^31 bytes).
EXIT STATUS
The following exit values are returned:
0 touch executed successfully and all requested changes were made.
>0 An error occurred. touch returns the number of files for which the times could not be successfully modified.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWscpu |
+-----------------------------+-----------------------------+
SEE ALSO
touch(1), attributes(5), largefile(5)
SunOS 5.11 26 Oct 1995 touch(1B)