Hi,
I have several lines like this ones:
123456789abcde /aa/bb/123456_$data.log
123456789abcde /aa/bb/123456_not_a_data_log
987654321ab /aa/bb/xpto123456_$data.log
...
How do I get into a variable the value "/aa/bb/123456_$data.log" , searching only for the beggining and ending... (3 Replies)
This is probably pretty simple butI'm not sure how to best go about it.
If I have
FILE="myBigLongFileName_1.xls"
FILE_PREFIX=`echo $FILE| cut -d"." -f1`
# that gives "myBigLongFileName_1"
All i want to do now is chop the "_1" from the end of $FILE_PREFIX
Any ideas anyone? (3 Replies)
Hi,
I have a value of a filepath in a variable
DATAFILE with value as "customtop/gpsore37/gepspo/1.0/bin/ashoka.csv
".
Now i want the value of last 4 charcters in to another variable.
That is EXTENSION = .csv
How can i do this in Shell scripting
Thanks in advance
Alla Kishore (8 Replies)
I need to check the occurrence of one string within another.
code
********************
if ;then do something done
********************
Thanks (7 Replies)
Hi
I use the below cmd to get the list of files that are modified than <temp> file in the <path> diretory
cmd:find <path> -name '*.zip' -type f -newer <temp> -print
i am getting all the list of files that are new or modified, with abs path, i want to copy all of these files to a... (3 Replies)
Hi,
I hav a string lets say aa.txt:bb:txt
length of the string can vary.. I have to keep the token inside a array and the delimiter is : plz send me the code (2 Replies)
Hi All,
I have a ouput string likes 'u8wos' or 'u10acsd' or somthing else 'u{number}{any characters}'and I want to get the number behind the letter 'u' by bash shell.
Thanks
Damon (11 Replies)
Hi,
My requirement is to get the substring and then remove special character.
Ex
I have data like T_SYSTEM_XXXXX_YYYY_ZZZ
I want to get XXXXXYYYYZZZ
the part after T_SYSTEM is varying it might be XXX_YY or just XX
can you tell me which all commands i have to use.
i understand i... (5 Replies)
Discussion started by: Mohammed_Tabish
5 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)