Hi All,
I have lines like below in a file
A /u/ab/test1.dat
A/u/ab/test2.dat
A /u/bb/test3.dat
A/u/cc/test4.dat
I will need
/u/ab/test1.dat
/u/ab/test2.dat
/u/bb/test3.dat
/u/cc/test4.dat
Pls help
Thanks (6 Replies)
I need to sort a file, the sort is not a alphabetical sort, it's based on a predefined order which is read from a file called fSortOrder.
The format of the fSortOrder file is :
STARTPATH"
....
....
The file that needs to be sorted is called tmpUnsorted and contains data in the format : ... (6 Replies)
Hi there
I need to grep for a detail from a file. The pattern to search for involves escape sequences in it. This causes for the problem.
grep "P\_SOME\_STRING\_SEARCH" filename
Note, I have line like below in the file and expect it to grep.
select *
from my_system_param
... (3 Replies)
Hi folks
I am issuing the following command:
grep "" *
Looking for the characters \/:*?"<>|#+%& within all files in a directory, but the command fails being unhappy with pipe:
ksh: 0403-057 Syntax error: `|' is not expected.
How do I force the command to take the pipe | ? I guess... (2 Replies)
Hi all,
I'm trying to gather data directly following a keyword in a file but I have no guarantee where it will appear in said file so I can't use cut or anything else that assumes it will be located at a certain position. If anyone has any suggestions I'd be grateful. Here is an example of the... (7 Replies)
Hi,
Is there a command to print one character x amont of times?
I need for example 10 comma's (,,,,,,,,,,). Instead of creating a loop, I was wondering if there is a way to do this with sed or awk?
Thanks! (3 Replies)
Need Help For GREP
I have a file say g1.txt and content of file is below
REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer" /v NoDrives /t REG_DWORD /d 4 /f ,
REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer" /v NoClose /t REG_DWORD /d 1 /f ,... (4 Replies)
hey , i m trying to figure out how to do the following :
i got a text file the looks like so:
1031
1031
1031
1031
1031
1031
1031
1031
16500
16500
16500
16500
1031
1031 (4 Replies)
Hello folks i have file which is below, i want to extract last column of file that contains dm-21 or dm-13 or dm-N
it show output like
I have tried but i got this (16 Replies)
I am trying to understand what the grep command in ubuntu is trying to do here.
The contents of my test file is given below
harsha@harsha-H67MA-USB3-B3:~/Documents$ cat data
abcd
efghi
jklmno
pqr
stuv
wxyz
When I grep for 3 dots (...) without the parenthesis as follows I would expect the... (4 Replies)
Discussion started by: sreeharshasn
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)