01-11-2010
Quote:
Originally Posted by
Franklin52
Even to a file in a not existing directory?
it a non existent directory, nope, sorry read that wrong
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
HI all,
I am wrkin on HP Unix .. can any1 let me know da usage of Touch command in shell scripting (1 Reply)
Discussion started by: ravi.sadani19
1 Replies
2. UNIX for Advanced & Expert Users
Dear expert,
what is this command touch -c filename using for?
I find if execute and filename is existed, it update the date to now.
If the filename is not exeisted, it don't create the file..
so what is this command using for?
Thank a lot! (1 Reply)
Discussion started by: zp523444
1 Replies
3. UNIX for Dummies Questions & Answers
hello everyone i am new to this forum and was wondering if you all could help me out.... i am looking for a touch command that can touch directories as well as files that does not involve sygwin... any and all help would be appreiciated :D (3 Replies)
Discussion started by: OrthoProof USA
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4. UNIX for Dummies Questions & Answers
If touch command sets the modification and access times of files to the current time of day, is there a command that could do the reverse of this? Say change the access times of files to an earlier time or date?
Say I have this file:
HOME> ls -l
-rw-rw-r-- 1 orbix orbix 886 May... (1 Reply)
Discussion started by: Orbix
1 Replies
5. UNIX for Dummies Questions & Answers
Hi,
This might be the stupidest question ever but here it goes, i need to create a file with the name Hello! It's $s It using the touch command
but whenever i use
touch 'Hello! It's $s'
i get s is undefined
touch Hello! It's $s
i get ' unmatched
Please help ^_^ (6 Replies)
Discussion started by: wsn
6 Replies
6. UNIX for Dummies Questions & Answers
Can any one provide answer for the below 3 requirements,
1.
file.txt
grep "name" file.txt > file1.txt
rm -f file.txt
mv file1.txt file.txt
as per abov,
a pattern grepped in file.txt and the content moved to again file.txt
My need is i want the timestamp of file.txt before chaning and... (3 Replies)
Discussion started by: prsam
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7. Shell Programming and Scripting
Hi,
I have a touch command in my script which creates / updates a file TODAY. Then i try to find the list of files which are newer than this TODAY file.
touch `date '+%m%d'`0000 TODAY
cd /auto/users-35/p494856/learning/filetransfer/
find . -name "*csv" -newer... (3 Replies)
Discussion started by: arunkumarmc
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8. Shell Programming and Scripting
Hi all
I changed some of my files in my hoem directory to old dates using the touch command like this
touch -t 200805101024 file name
but after using this command the date changed properly but it displays like below
-rwxr--r-- 1 fincntrg fingrp 193619 May 10 2008 vi.pdf
I... (3 Replies)
Discussion started by: thelakbe
3 Replies
9. UNIX for Dummies Questions & Answers
hi ,
I am transferring files from one unix server to another, after transfer of a file i want to touch the same file name in another directory in the destination server.
How can i touch a file when i am in ftp prompt on the source server.
Thanks in advance (2 Replies)
Discussion started by: nick1982
2 Replies
10. UNIX for Advanced & Expert Users
Hello,
I am trying to use touch command to create 1200 .txt files. I am using this, but it is not working.
touch `seq 1 1200`.txt
Regards,
Siddhesh.K (5 Replies)
Discussion started by: Siddheshk
5 Replies
LEARN ABOUT CENTOS
shell-quote
SHELL-QUOTE(1) User Contributed Perl Documentation SHELL-QUOTE(1)
NAME
shell-quote - quote arguments for safe use, unmodified in a shell command
SYNOPSIS
shell-quote [switch]... arg...
DESCRIPTION
shell-quote lets you pass arbitrary strings through the shell so that they won't be changed by the shell. This lets you process commands
or files with embedded white space or shell globbing characters safely. Here are a few examples.
EXAMPLES
ssh preserving args
When running a remote command with ssh, ssh doesn't preserve the separate arguments it receives. It just joins them with spaces and
passes them to "$SHELL -c". This doesn't work as intended:
ssh host touch 'hi there' # fails
It creates 2 files, hi and there. Instead, do this:
cmd=`shell-quote touch 'hi there'`
ssh host "$cmd"
This gives you just 1 file, hi there.
process find output
It's not ordinarily possible to process an arbitrary list of files output by find with a shell script. Anything you put in $IFS to
split up the output could legitimately be in a file's name. Here's how you can do it using shell-quote:
eval set -- `find -type f -print0 | xargs -0 shell-quote --`
debug shell scripts
shell-quote is better than echo for debugging shell scripts.
debug() {
[ -z "$debug" ] || shell-quote "debug:" "$@"
}
With echo you can't tell the difference between "debug 'foo bar'" and "debug foo bar", but with shell-quote you can.
save a command for later
shell-quote can be used to build up a shell command to run later. Say you want the user to be able to give you switches for a command
you're going to run. If you don't want the switches to be re-evaluated by the shell (which is usually a good idea, else there are
things the user can't pass through), you can do something like this:
user_switches=
while [ $# != 0 ]
do
case x$1 in
x--pass-through)
[ $# -gt 1 ] || die "need an argument for $1"
user_switches="$user_switches "`shell-quote -- "$2"`
shift;;
# process other switches
esac
shift
done
# later
eval "shell-quote some-command $user_switches my args"
OPTIONS
--debug
Turn debugging on.
--help
Show the usage message and die.
--version
Show the version number and exit.
AVAILABILITY
The code is licensed under the GNU GPL. Check http://www.argon.org/~roderick/ or CPAN for updated versions.
AUTHOR
Roderick Schertler <roderick@argon.org>
perl v5.16.3 2010-06-11 SHELL-QUOTE(1)