[..]
WARNING: Pedantic piconit (of which you are probably aware) ahead.
That will still have problems with leading/trailing spaces and backslashes. Misinterpretation of such filenames manifests as an inability to find a file that exists or as reading the wrong file.
To remedy those shortcomings:
Regards,
Alister
[..]
Indeed you are correct. I did not want to overcomplicate things, but file names with spaces occur quite frequently so I felt that was the most important note to make...
To complete the quest for the most robust solution we should probably also use printf rather than echo, since not all echoes are immune to special characters:
This User Gave Thanks to Scrutinizer For This Post:
Hi
I am a shell-script newbie and am looking to synchronize certain files in two directory structures.
Both these directory-trees are in CVS and so I dont want the CVS directory to be copied over.
I want only .sh and .pl files in each subdirectory under these directory trees to be... (3 Replies)
I have to write a shell script which can delete all the files and directories recursively inside the specified directory but should not delete the specified directory.
Please some body help me in writing the script. (3 Replies)
Hi,
I need to concatenate data files with a .mp extension that are stored in directories by year. I want to keep the same filename as an output for example:
for the file name p030.mp, which resides in the following subdirectories:
/2000/p030.mp
/2001/p030.mp
/2002/p030.mp
I want to:... (4 Replies)
I have a script which generates recursively some files in folders for a given root folder.
I have checks for permissions and it works for all folders except one(i have 777 permission on it). When i try calling the script in problematic folder(problematic folder being root folder), script works as... (2 Replies)
Display the number of files in a directory and recursively in each subdirectory
To look something like below, for example
/var 35
/var/tmp 56
/var/adm 46Any ideas how can we do this?
Got a sun cluser global mount point which takes ages to mount everytime, need to understand... (5 Replies)
I have a directory that is restricted and I cannot just copy the files need, but I can cat them and redirect them to a new directory. The files all have the date listed in them. If I perform a long listing and grep for the date (150620) I can redirect that output to a text file. Now I need to... (5 Replies)
This should recursively walk through all dirictories and
search for a specified string in all present files, if found
output manicured content (eg some regex) with CAT into
a specified directory (eg /tmp/)
one by one, keeping the original names
This is what I have so far, which seems to... (1 Reply)
I love the -newerct flag for the Cygwin find command on windows.
Can I use "/usr/bin/find . -newerct '3 hours ago'" to conditionally copy a directory tree so that only the files in the directory tree that are younger than 3 hours are copied to my destination directory such that the directory... (4 Replies)
Hi.
I found many scripts in the web of achieving this.
But I like to use this one
find /EDWH-DMT03 -xdev -size +10000 -exec ls -la {} \;|sort -n -k 5 > LARGE.rst
But the problem is, why it still list out files with 89 bytes as the output? Is there anything wrong with the command?
My... (7 Replies)
I need to copy a complete directory structure into a new location. But I want to have all files copied into one directory and leave out the directory structure. So all files must be placed in one directory. (4 Replies)
Discussion started by: ReneVL
4 Replies
LEARN ABOUT DEBIAN
shell-quote
SHELL-QUOTE(1p) User Contributed Perl Documentation SHELL-QUOTE(1p)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 v5.8.4 2005-05-03 SHELL-QUOTE(1p)