08-29-2017
Quote:
Originally Posted by
RudiC
Did you consider the "extended globbing" feature in recent bashes? man bash:
You could build the composite pattern from your property file, and then remove all files except the given ones.
Hi RudiC,
Could you please help a bit with code level understanding.
I am not that much into scritping!!
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
I am trying to write a shell script that will remove files in a directory based on the date. For instance, remove all files older than yesterday. Any ideas? (4 Replies)
Discussion started by: hshapiro
4 Replies
2. UNIX for Dummies Questions & Answers
Dear all,
Hello and Good Morning. I have a properties file in a specific directory in UNIX that can be accessed by certain users. This properties file is being used by a number of backend programs. The properties file contain the username and the password of the database as well. How do I design... (1 Reply)
Discussion started by: jackal28
1 Replies
3. Shell Programming and Scripting
Hi All,
Please help me to find or remove files based on position based search pattern.
file1.txt:
aaabbbccc
dddeeefff
iiijjjkkk
file2.txt:
lllmmmnnn
ooopppqqq
rrrsssttt
file3.txt:
uuuvvvwww
xxxeeeyyy
zzzcccooo
From the above files, I like to delete the files that have "eee"... (1 Reply)
Discussion started by: kumarn
1 Replies
4. Shell Programming and Scripting
Hi,
Iam in a need for a script/function in KSH where I want to read a text file (property file) in block by block. Here is the example:
Heading Name Descripton
Block Block1 Value1 Description
Property Name Value
Property Name Value
Property Name Value
Property Name Value
Property Name... (7 Replies)
Discussion started by: ysreenivas
7 Replies
5. Shell Programming and Scripting
Hi
I have been struggling with a script for removing duplicate messages from a shared mailbox.
I would like to search for duplicate messages based on the “Message-ID” string within the messages files.
I have managed to find the duplicate “Message-ID” strings and (if I would like) delete... (1 Reply)
Discussion started by: spangberg
1 Replies
6. UNIX for Dummies Questions & Answers
Hello team,
I have a number of files in a folder which are dated yesterday and today.Can i remove all the files which i created today based on date??
is there any syntax for this ?? (1 Reply)
Discussion started by: kanakaraju
1 Replies
7. Shell Programming and Scripting
Hi All,
I have 2 properties files - one is a master templete and other one is a node specific properties file, I need to comapre these 2 properties files and make sure the node Specific properties file contains all the properties in the master temple properties file else report the missing... (5 Replies)
Discussion started by: jayka
5 Replies
8. Shell Programming and Scripting
Hello,
I have some problem to remove the columns which have the duplicate value of -9 which is in every row except -9 in some row.
Input file showed in below :
Col1 Col2 Col3 Col4 Col5 Col6
A 1 A -9 0 -9
B 2 T -9 -9 -9
C 3 D -9 1 -9
D 4 R -9 2 -9
Output should... (6 Replies)
Discussion started by: awil
6 Replies
9. Shell Programming and Scripting
I have two files, a keepout.txt and a database.csv. They're unsorted, but could be sorted.
keepout:
user1
buser3
anuser19
notheruser27
database:
user1,2343,"information about",field,blah,34
user2,4231,"mo info",etc,stuff,43
notheruser27,4344,"hiya",thing,more thing,423... (4 Replies)
Discussion started by: esoffron
4 Replies
10. Solaris
I have multiple files with pattern of "*.tps (example:tps-20170307170421560-1053.tps)" in my log directory(files are in different sub directories).
entries in files are given below. I want to extract highest value of endtime accross all files.
"endTime :1488902691462"
... (7 Replies)
Discussion started by: Agoyals1986
7 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)