I have a fixed length file in the following format
<date><product_code><other data>
The file size is huge and I have to extract only the lines that match a certain product code which is of 2 bytes length. I cannot use normal grep since that may give undesirable results. When I search for prod... (5 Replies)
Hi there,
i'm having some problems just making an awk script (i've tried this way, but other way can be posible for sure), for the next file
file.txt
<register>
<createProfile>
<result>0</result>
<description><!]></description>
<msisdn>34661461174</msisdn>
<inputOmvID>1</inputOmvID>... (6 Replies)
I am using the following code in a CShell script to get a yes/no response from the user:
echo ""
echo -n "Do you want to archive your main level directory? <y> or n: "
set main_answer = $<
Is there a way to extract the first letter from the user's response and then perhaps convert that... (4 Replies)
How to extract the last character of a string in bash?
---------- Post updated at 03:56 PM ---------- Previous update was at 03:55 PM ----------
Suppose "abcde" is a string. i want to extract the last character i.e. "e". (1 Reply)
Hi All,
as the title says I need to extract N lines after match number X of a pattern.
e.g.
111
xxx
xxx
111
yyy
yyy
111
www
www
111
zzz
zzz
I would like to extract the two lines after the second 111 occurrence.
I tried with grep but I didn't find any options to do that.
Any... (11 Replies)
Hi there, I have the following output,
# raidctl -l
RAID Volume RAID RAID Disk
Volume Type Status Disk Status
------------------------------------------------------
c0t1d0 IM OK c0t1d0 OK
... (4 Replies)
This time I am trying to extract the number 10 from the following line. This number is subject to change and may be anything from 1 to 3 numerals in length, i.e. 1-999. Hence why I dont want to use 'cut' cmd.
The line I am working on is
GGSN-MIB::ggsnApnName.10 = STRING: open.internetI have... (7 Replies)
I have a script which is supposed to log in to my vB account and print my security token, however doesn't seem to work globally. The logging in works perfectly just will not retrieve and print the security token for every forum I log in to. Code Below:
#!/usr/bin/perl
use LWP::UserAgent;
... (8 Replies)
Hello.
from a text file, I want to get only the first word ( before blank ) following code=
grep -i -e "WORD1" "/path/to/text/file.txt | sed -n 's/WORD1\+//p' | sed -n 's/code=/\1/p'
return an error.
sed: -e expression #1, char 12: invalid reference \1 on `s' command's RHSFor debugging... (12 Replies)
Hello.
First best wishes for everybody.
here is the input file ("$INPUT1") contents :
BASH_FUNC_message_begin_script%%=() { local -a L_ARRAY;
BASH_FUNC_message_debug%%=() { local -a L_ARRAY;
BASH_FUNC_message_end_script%%=() { local -a L_ARRAY;
BASH_FUNC_message_error%%=() { local... (3 Replies)
Discussion started by: jcdole
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)