Hi folks,
I have the following parameter setting:
export ADMIN_HOST_NAME=http://hostname.com
I want to define a new parameter,ADMIN_HOST_NAME_NEW,which based on $ADMIN_HOST_NAME but I need to remove the prefix "http://".
The requested result for $ADMIN_HOST_NAME_NEW is hostname.com
How... (2 Replies)
Hi
Input File:
export NAME='AA.BB.CC'
export FILE=1.2.3
AA.BB.CC
export MAIL= '1.3.3'
export char='XX.YY.ZZ'
Out File
export NAME='AA/BB/CC'
export FILE=1.2.3
AA.BB.CC
export MAIL= '1.3.3'
export char='XX/YY/ZZ'
Only the Lines which have export and have alphabets after =... (9 Replies)
Hi all,
I have a requirement where in i have to create a temporary file by prefixing a string of special characters to each row of a input file.
the input file is '|' delimited.
here is the content of input file
aaa|1234|axad|123
bbb|qwqw|qw|1334
the output should be
... (5 Replies)
Hi,
I have a variable, which contains comma separated values. Something like.
StringA="abc,def,ghi,jkl"
I want to apply prefix and suffix to each value in the string without using any loops.
Say if Prefix is Pre_ and Suffix is _Suf then I need to get
... (1 Reply)
I have a file:
chromosome1:436728
chromosome2:32892
.....
chromosome22:23781
I just want to get the number, not the prefix "chromosomeX", so I want to remove all the prefix ahead of the numbers. How can I do that?? Thanks!!! (PS: give me some very simple command so that I can understand... (4 Replies)
I have a shell script and it works pretty well to pull out the query_string contents of a single instance of router=
But if I have multiple router= strings, it only pulls out the last one.
Is there a way to pull out every router= and if there is a multple string, to egrep them together... (1 Reply)
I have a file that has the words I want to find in other files (but lets say I just want to find my words in a single file). Those words are IDs, so if my word is ZZZ4, outputs like aaZZZ4, ZZZ4bb, aaZZZ4bb, ZZ4, ZZZ, ZyZ4, ZZZ4.8 (or anything like that) WON'T BE USEFUL.
I need the whole word... (6 Replies)
Hello everyone,
I want to remove only prefix ME_ from all the values that are present in the FILEA. Below code I'm using for this.
sed 's/ME\_//g' FILEA > FILEB
Using the above code, all ME_ values are getting removed from the file. But the problem here is I want to remove only Prefix ME_... (4 Replies)
Hi,
I want to add prefix and suffix on line# 205 using SED or AWK and want to change on the same file without creating new file.
This command will be used in the bash script
Am using Bash shell
Regards
Nayaj (3 Replies)
Discussion started by: Nayaj
3 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)