Hey,
I am using 'find' to check the existence of a file which is created today, and this is what I have
find . -name $filename -mtime +0 -exec ls {} \;
my problem is I need to know what the above command actually get anything, so can anyone give me some pointer on how to do... (1 Reply)
Well I have a 3000 lines result log file that contains all the machine data when it does the testing... It has 3 different section that i am intrsted in
1) starting with "20071126 11:11:11 Machine Header 1"
1000 lines...
"End machine header 1"
2) starting with "20071126 12:12:12 Machine... (5 Replies)
Perl Guru....
I need to compare two diff file (file1.abc will locate in current server and file2.abc will locate in remote server), basically the script will look for match in both file and only will send out email if there is no match and also give me list of unmatch and dups as well.
So... (0 Replies)
Hi All,
I have a below file:
==================
02:53 pravin-root
02:53 pravin-root
03:05 pravin-root
02:55 pravin1-root
02:59 pravin1-root
==================
How do I find the first and last value of column 1. For example, how do I find 02:53 is the first time stamp and 03:05 is... (3 Replies)
When searching for some files which match some specific criteria with find from the root directory, I got a listing of a bunch of files that say "Permission Denied". How can do my search and not show the files that I don't have the permission to list?
Thanks, (3 Replies)
Hi
I want to compare 2 files. The files have the same amount of rows and columns. So each line must be compare against the other and if one differs from the other, the result of both must be stored in a seperate file.
I am doing this in awk.
Here is my file1:
Blocks... (2 Replies)
Hi,
I have two input files; file1 and file2. I compare them based on matched values in 1 column and print selected columns of the second file (file2). I got the result but the header was not printed. i want the header of file2 to be printed together with the result. Then i did below codes:-
... (3 Replies)
i run command that return this result,example :
gigabitethernet2/2/4:NotPresent, gigabitethernet2/1/17:UP, gigabitethernet2/1/10:UP, gigabitethernet2/1/5:UP,
gigabitethernet2/1/9:UP, gigabitethernet2/1/36:DOWN, gigabitethernet2/1/33:DOWN, gigabitethernet2/1/8:UP,... (19 Replies)
Hi All,
I have transaction in one file.I want to match that to another file and find the number of time the transaction is available on the other file.I need to take each record from TRANSFILE and match that with SPEND FILE and find the number of counts of the transaction
TRANSFILE:
... (4 Replies)
We have 100 linux servers, All send logs to both centralize server(server1 and serverb).
all send logs every day and stores in /syslog folder with hostname.log file.
I need to prepare script to check every day from both centralize server(server1 and serverb) and send mail in table format.
... (1 Reply)
Discussion started by: yash_message
1 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)