Thanks all... It's working. I was supposed to pass variable for 1000 and XYZ-1234 there. So I changed the command to ,
sed "s/$/,$id1,$id2/" file
When using single quote it was not working.
If the replacement text in your variables contains characters or sequences which are special to sed, this approach will not work. Examples of such characters/sequences include '&', '/' (if default regular expression delimiters are being used), '\' followed by anything (it's either a defined escape sequence or an undefined sequence which may result in the loss of a backslash in your replacement text).
Assuming that your two values are stored in the shell variables $a and $b:
The following are safe alternatives, one is pure shell (printf is usually a built-in these days) and the other is AWK:
Regards,
Alister
Hi,
Does anyone know if its possible to add something like an end of line like c or java in unix?
dirs=/home/nosnam
var=''
for dir in $dirs
do
listDirs=`ls -d1 $dir/*`
for eachList in $listDirs
do
listRepos=`du -ks $eachList | awk '{ x+=$1 }; END { print x... (4 Replies)
Hi,
I need some help in knowing how I can append tabs at the end of each line...
The data looks something like this:
field1, field2, field3, field4
1 2
3 4 5
I have values in field1 and field 2 in the first row and I would like to append tab on field3 and field4 for the first row..and in... (6 Replies)
Hi i would like to add line numbers to end of each line in a file.
I am able to do it in the front of each line using sed, but not able to add at the end of the file.
Can anyone suggest
The following code adds line number to start of each line
sed = filename | sed 'N;s/\n/\t/'
how can i... (5 Replies)
hi,
i have file which is having large sql query
eg :
i am executing this sql file but now i want to add ; after query on same line
i.e. i should look like
any idea how to achieve it ? (6 Replies)
I have a file with varying record length in it. I need to reformat this file so that each line will have a length of 100 characters (99 characters + the line feed).
AU * A01 EXPENSE 6990370000 CWF SUBC TRAVEL & MISC
MY * A02 RESALE 6990788000 Y... (3 Replies)
Hello
How can I add a string (always the same) at the end of a specific line in a file...
The file is:
000000001 041 L $$aspa
000000001 088 L $$aJ.E.N. 551
000000001 090 L $$aINFORMES JEN
000000001 100 L $$aautor 1
----
000000002 041 L $$aeng
000000002 088 L $$aJ.E.N. 1... (13 Replies)
How to add a comma at the end of each line in this file?30 1412
30 3352
30 5254
30 5543
30 7478
3 28
3 30
3 39
3 54
3 108
3 152
3 178
3 182
3 214
3 271
3 286
3 300
3 348
3 349
3 371 (3 Replies)
i want to add a white-space at the end of each line for my inp.file, but when i do it, the result is a new line with a white-space between each line!
my input:
2012 0811 1223 15.2 L 38.393 46.806 9.0 Teh 78 0.5 6.5LTeh 1
GAP=74 ... (5 Replies)
Seems simple but ive been searching for a good hour of so
I have a text file and would like to add a string to the end of line 5 ( as an example)
to ake tings hard the line number we have to add the text to is stored in a variable cunningly name $Line_to_append
any ideas on how this could... (2 Replies)
Discussion started by: dunryc
2 Replies
LEARN ABOUT CENTOS
shell-quote
SHELL-QUOTE(1) User Contributed Perl Documentation SHELL-QUOTE(1)NAME
shell-quote - quote arguments for safe use, unmodified in a shell command
SYNOPSIS
shell-quote [switch]... arg...
DESCRIPTION
shell-quote lets you pass arbitrary strings through the shell so that they won't be changed by the shell. This lets you process commands
or files with embedded white space or shell globbing characters safely. Here are a few examples.
EXAMPLES
ssh preserving args
When running a remote command with ssh, ssh doesn't preserve the separate arguments it receives. It just joins them with spaces and
passes them to "$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 v5.16.3 2010-06-11 SHELL-QUOTE(1)