07-30-2008
Quote:
Originally Posted by
kranti hande
hi
i m not geeting any command for writing data in any existing file at end
of file though linux commands.plz suggest me anything for it.
kranti
Parser failed; syntax error at line 1.
10 More Discussions You Might Find Interesting
1. UNIX for Advanced & Expert Users
Hi i am new on Unix..........
I have to write a ddl and for tables and I am using single quotes in the comment for the table and its column...........but when i see on the unix server the ' dont show .
e.g. DROP TABLE DMR_PURGED;
CREATE TABLE DMR_PURGED
(
HEALTH_SERVICE_ID ... (9 Replies)
Discussion started by: agarwalniru
9 Replies
2. Shell Programming and Scripting
Hi
I have a text file which has two sets of lines repeating for "n" number of times.Some data is printed between the two lines.I want to retrieve all the data thats there in between those two set of lines.I have the string value of those two set of lines.
To be much more clearer
... (4 Replies)
Discussion started by: chennaitomcruis
4 Replies
3. Shell Programming and Scripting
I have a problem in the following code ...
while read line
do
#Get Line Number
OLDLINE=`sed -n $Lineno $filename`
echo "Un Changed Line : "$OLDLINE
echo "Enter a New Pattern : "
read NewPattern <&1
echo "NewPattern :"$NewPattern
NEWLINE=`cat $filename | sed -n... (1 Reply)
Discussion started by: maxmave
1 Replies
4. Shell Programming and Scripting
Hi,
I have a ksh which peocess and get me data from 3 days...
ie if i process it on jan 28.. it gets data for 25, 26 and 27.... the process run every day and get previous 3 days data...all this data is appened to a file lets call time.out
Now time.out cannot have deplicate data so what i want... (10 Replies)
Discussion started by: bhagya2340
10 Replies
5. Shell Programming and Scripting
Hello,
I have a csv file and will like to replace the last character of each line in the file with Z (20 Replies)
Discussion started by: 123script
20 Replies
6. Shell Programming and Scripting
Hi All,
As mentioned in the title I have two text files and I would like to replace line number 5 of file #1 with line number 4 of file #2
e.g.
file 1
wqwert
4.4464002
3
319
286
369
46.320002
56.150002
45.100002
1
1
1
0.723 (12 Replies)
Discussion started by: f_o_555
12 Replies
7. Shell Programming and Scripting
Hello,
I have 2 files delimited by "|".
File1:
1|New York
12| Buffalo
599| Syracuse
File2:
56 Kennedy |1
9 Burridge Pl|15
98 BELL ROCK |599
My goal: Is to replace the numerical numbers in "File 2" (second field, not street address) with the corresponding city names from... (2 Replies)
Discussion started by: vestport
2 Replies
8. Shell Programming and Scripting
Hi all,
I need to replace a line
export TZ=xxxxxxxx
with the line
export TZ=$1
Now, "xxxxxxxx" in the above line is some unknown string and $1 is a parameter. I want the content of $1 to be replaced with "xxxxxxxx".
Kindly help me how to do this in the shell scripting. (5 Replies)
Discussion started by: ddeeps2610
5 Replies
9. UNIX for Dummies Questions & Answers
Hi Guys,
Please help me with my problem here:
I have a source file:
1212 23232 343434 ASAS1 4
3212 23232 343434 ASAS2 4
3234 23232 343434 QWQW1 4
1134 23232 343434 QWQW2 4
3212 23232 343434 QWQW3 4
and a mapping... (4 Replies)
Discussion started by: kokoro
4 Replies
10. Shell Programming and Scripting
Hi All,
Have a requirement where i needs to alter the Content of File once it is generated.
The File consist of Multiple line ...range from 2000-8000 lines.
I need to change the Content of Lines which match this Pattern
... (14 Replies)
Discussion started by: asheshrocky
14 Replies
LEARN ABOUT DEBIAN
shell-quote
SHELL-QUOTE(1p) User Contributed Perl Documentation SHELL-QUOTE(1p)
NAME
shell-quote - quote arguments for safe use, unmodified in a shell command
SYNOPSIS
shell-quote [switch]... arg...
DESCRIPTION
shell-quote lets you pass arbitrary strings through the shell so that they won't be changed by the shell. This lets you process commands
or files with embedded white space or shell globbing characters safely. Here are a few examples.
EXAMPLES
ssh preserving args
When running a remote command with ssh, ssh doesn't preserve the separate arguments it receives. It just joins them with spaces and
passes them to "$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)