It's always dangerous to want a wildcard character as part of a filename, but you can do this:-
You must make sure that you escape every usage of the file name correctly, and if you are setting it as a variable, you might need to double escape it, i.e.
... so you escape the escape character too so that doesn't get interpreted on setting the variable.
I still worry that you may make a mistake with serious consequences. You might be better using a file called All_Trigger.done instead for clarity and to minimise the risks, especially of any maintenance to your code later on.
I'm trying to figure out how to build a small shell script that will find old .shtml files in every /tgp/ directory on the server and delete them if they are older than 10 days...
The structure of the paths are like this:
/home/domains/www.domain2.com/tgp/
/home/domains/www.domain3.com/tgp/... (1 Reply)
I'm trying to do a simple if statement that tests if a filename exists with a user specified string.
So say I have these files:
Assigned_1day_after_due_chuong
Assigned_1day_after_due_gallen
Assigned_1day_after_due_heidenre
and i'm running a script and want to know if a... (6 Replies)
i have a
filename_1=file1.dat
filename_2=file2.dat
i want to pass the filename in a loop
for((i=1;i<=2;i++)
do
awk{print $1} $filename_$i.dat
done
how should i pass the filename (2 Replies)
I'm sure this is by design, but using something like
for f in dir/*
do echo $f
done
produces unexpected (to me) results if run against an empty directory. I'd have expected it to not execute the loop, but it actually calls it with f set to 'dir/*'.
Now I know that I'm trying to protect... (2 Replies)
hi
here is my script
set -vx
b=`cat /info_d05/visage/SrcFiles/Customer_Master/Log_Files/last_date.txt`
for name in /info_d05/visage/SrcFiles/Customer_Master/Input_Files/*
do
fname=`basename $name`
p=`$fname|cut -d"_" -f6|sed 's/\(.*\)....../\1/'`
if
then
cp... (6 Replies)
Practice folder contains many files and im interested in extracting file which starts with abc* ghi* xyz* . I need to do variety of operations for different files. if file starts with xyz* then i need to move to some destination otherwise some other destination. I am not able to make wildcard... (15 Replies)
In several scripts that process files matched by name pattern I needed to add a check for file existence. Just to illustrate let's say I need to process all N??? files:
/tmp$ touch N100 N101
/tmp$ l ?10
-rw-rw-r-- 1 moss group 0 Apr 19 11:22 N100
-rw-rw-r-- 1 moss group ... (10 Replies)
Hi,
I have a variable returned from Oracle SQL Function which holds file names.
I would like to test if all the file names mentioned in the string exists in a directory. If all the files exists print "exists", even if one file does not exists print "Does not exists".
e.g.
... (3 Replies)
Hi,
This has been pestering me for quite a while, any help will be highly appreciated
The current directory has a file with below name
npidata_20050523-20171210.csv
The below wildcard matched the above file
ls -ltr npidata_????????-201712??.csv
But when the part '201712' is put... (6 Replies)
Discussion started by: zulfi123786
6 Replies
LEARN ABOUT CENTOS
escape
escape(1) Mail Avenger 0.8.3 escape(1)NAME
escape - escape shell special characters in a string
SYNOPSIS
escape string
DESCRIPTION
escape prepends a "" character to all shell special characters in string, making it safe to compose a shell command with the result.
EXAMPLES
The following is a contrived example showing how one can unintentionally end up executing the contents of a string:
$ var='; echo gotcha!'
$ eval echo hi $var
hi
gotcha!
$
Using escape, one can avoid executing the contents of $var:
$ eval echo hi `escape "$var"`
hi ; echo gotcha!
$
A less contrived example is passing arguments to Mail Avenger bodytest commands containing possibly unsafe environment variables. For
example, you might write a hypothetical reject_bcc script to reject mail not explicitly addressed to the recipient:
#!/bin/sh
formail -x to -x cc -x resent-to -x resent-cc
| fgrep "$1" > /dev/null
&& exit 0
echo "<$1>.. address does not accept blind carbon copies"
exit 100
To invoke this script, passing it the recipient address as an argument, you would need to put the following in your Mail Avenger rcpt
script:
bodytest reject_bcc `escape "$RECIPIENT"`
SEE ALSO avenger(1),
The Mail Avenger home page: <http://www.mailavenger.org/>.
BUGS
escape is designed for the Bourne shell, which is what Mail Avenger scripts use. escape might or might not work with other shells.
AUTHOR
David Mazieres
Mail Avenger 0.8.3 2012-04-05 escape(1)