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)
Being new to this area .I have been assigned a task which i am unable to do . Can any one please help me .
Hi I have requirement where i have input file XYZ_111_999_YYYYMMDD_1.TXT and with header and series of Numbers and Footer.
I want to create a mutiple output files with each file having a... (2 Replies)
Hi,
I have 100 files in a directory.
Each file have the following format
>CtbRe01234
fdfjdhfkdfkd
>CtL2B0456
gjfgfkgjfkgjfk
>CmdrE05768
fghdjskksllfkLike this I have many files in the directory.
What I want is; rename the header content in each file such that the above file... (6 Replies)
Hi,
I"m writing a script to store all the contents of multiple files with different file names into one single file.
I am giving in only last modified date of file in a folder. The below script gives a list of just one file based on the input date i give which is taken as string variable. I... (2 Replies)
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)
hi,
I have this array
a=("" "" "")
Is there a command that I can use to check if all members of the are empty?
I really don't like to use for or while loop.
thanks!
---------- Post updated at 02:23 PM ---------- Previous update was at 02:15 PM ----------
wait, I got it... (1 Reply)
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)
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)
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)
Hello, sorry to bother anyone reading this
I have an assignment with a question that reads:
Your current directory is stenton. Create empty files called f1, f2, and f12 (in that order), within stenton
So my first thought was to enter: touch f1 f2 f12
but that does not work, does anyone... (1 Reply)
Discussion started by: eleuin
1 Replies
LEARN ABOUT OSF1
lndir
lndir(1X)lndir(1X)NAME
lndir - create a shadow directory of symbolic links to another directory tree
SYNOPSIS
lndir fromdir [todir]
DESCRIPTION
lndir makes a shadow copy todir of a directory tree fromdir, except that the shadow is not populated with real files but instead with sym-
bolic links pointing at the real files in the fromdir directory tree. This is usually useful for maintaining source code for different
machine architectures. You create a shadow directory containing links to the real source which you will have usually NFS mounted from a
machine of a different architecture, and then recompile it. The object files will be in the shadow directory, while the source files in
the shadow directory are just symlinks to the real files.
This has the advantage that if you update the source, you need not propagate the change to the other architectures by hand, since all
source in shadow directories are symlinks to the real thing: just cd to the shadow directory and recompile.
The todir argument is optional and defaults to the current directory. The fromdir argument may be relative (e.g., ../src) and is relative
to todir (not the current directory).
Note that RCS, SCCS, and CVS.adm directories are not shadowed.
Note also that if you add files, you must run lndir again. Deleting files is difficult because the symlinks will point to places that no
longer exist.
BUGS
The patch routine needs to be able to change the files. You should never run patch from a shadow directory.
Use a command like the following to clear out all files before you can relink (if the fromdir has been moved, for instance):
find todir -type l -print | xargs rm
The following command will find all files that are not directories:
find . ! -type d -print
lndir(1X)