I have a program that will export my data to a single file, but it assigns a file name that is overridden every time I run the program. I need to change the file name to have a sequential number in the filename.
How do I rename a file so that the filename contains the system date and time. I want... (5 Replies)
Hi Guys,
I need to script the renaming of files as followins:
files:
firstjd
secondjo
thirdjv
My script needs to insert the date/time infront of the last 2 characters of the filenames above, any ideas greatly received :)
the letters before the last 2 characters could change, I'm only... (7 Replies)
Hi,
I operate and use HF radars along the California coast for ocean surface currents. The devices use Mac OS as the control and logging software. The software generates thousands of files a week and while I've used PERL in the past to solve the problems of finding files I come to realize some... (6 Replies)
Hello,
I need to create a shell script that appends a filename to create a name with the date and time appended that is guaranteed to not exist. That is, the script insures you will not overwrite a file with the same name. I am lost with this one. I know I need to use date but after that I am... (3 Replies)
Hi,
There are similar kind of posts, but none seems like working for me. Please correct me if I'm wrong.
I need append/rename file abc.txt with file processed date and time like abc_systemdatetimestamp.txt
and move it to different folder.
for example I have
/source/data/abc.txt
... (1 Reply)
I'd like to convert a date string in the form of sun aug 19 09:03:10 EDT 2012, to unixtime timestamp using awk.
I tried
This is how each line of the file looks like, different date and time in this format
Sun Aug 19 08:33:45 EDT 2012, user1(108.6.217.236) all: test on the 17th
... (2 Replies)
Here is my sample data
Test.txt
column 1|columne 2|start Date|end Date
test|test|03/24/2014|03/24/2014
test|test|03/24-2014|03/24/2014
test|test|03/24/2014|03/24/2014
test|test|03/24/2014|03/24-2014
test|test|03/24/2014|03/24/2014
Now in the file i am expecting the date fields should be... (4 Replies)
Hi,
I'm totally new in sell script and working with a shell code. I want to extract the date and time from the filenames. The filenames are different but all of them begins with WI_ SCOPE_:
WI_SCOPE_DATA_CHANGE_2017-09-12_15-30-40.txt
WI_SCOPE_BACK_COMPLETE_QUEUE_2017-09-12_15-31-40.txt... (5 Replies)
Hi,
I am facing one scenario in which I need to extract exact position of date and time from the name of the files. For example, Below is the record in which I need to extract position of YYYYMMDD,HHMISS and YYMMDD. Date and time variables can come more than once. I need to use these position... (13 Replies)
Discussion started by: Prathmesh
13 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)