You do it exactly the wrong way round: you have to escape the inner quotes toprotect them from being interpreted by the shell the first time.
Here is what happens to your command:
1. The shell interprets it, thus removing the unescaped quotes from the string and applying them on the string. In the same step the variables are expanded (textually replaced by their value).
2. The interpreted string is then split up into the command intself (ssh) and its options and/or parameters ($HOST ...)
3. Only now ssh itself starts its work - it opens up a connection to the remote host and feeds it what it was given as command line.
4. The shell on the remote host executes *its* command line, more or less starting over from 1.
What do we learn from that? We want to preserve the quotes from being interpreted by the first shell, so we have to make them look like ordinary characters withot special meaning to it - this is what "escaping" means.
Hence we have to put the double quotes *inside* the string, not outside:
This will be cooked by the first shell to (in the following, "<>" is only delimiting the parts of the command)
The escaped double quotes will now be literal quotes so the second shell will interpret them.
Hi
I have a shell script in which a string variable is saving following query.
SqlQuery="select a||'|'||b||'|'||c from dual"
I am trying to pass above query as a parameter to some script but its giving me error for "single quote". I tried suppressing it using \' instead of just ' but it... (1 Reply)
Hi all, i have a perl script. from within the perl script, i am calling a system command which i need to pass in a perl variable. but the variable substitution does not seems to happen. would like to find out where is the missing escape character or extra quotes;or what is my mistake.
... (2 Replies)
I have a csv file with lines like the followings
123456,"ABC CO., LTD","XXX"
789012,"DEF LIMITED", "XXX"
before I bcp this file to database, the comma in "CO.," need to be removed first.
My script is cat <filename> | sed 's/"CO.,"/"CO."/g'
but it doesn't work. Can anyone here able to... (2 Replies)
Hi,
I have a requirement to replace the comma's inside the double quotes. The comma's inside the double quotes will get changed dynamically.
Input Record:
"Washington, DC,Prabhu,aju",New York
Output Record:
"Washington| DC|Prabhu|aju",New York
I tried with the below command but it... (3 Replies)
Unix superusers,
I am new to unix but would like to learn more about grep. I am very familiar with regular expressions as i have used them for searching text files in windows based text editors. Since I am not very familiar with Unix, I dont understand when one should use GREP with the... (2 Replies)
Hi, all
I need to get fields in a line that are separated by commas, some of the fields are enclosed with double quotes, and they are supposed to be treated as a single field even if there are commas inside the quotes.
sample input:
for this line, 5 fields are supposed to be extracted, they... (8 Replies)
Hi,
I have an input file like this
$ cat infile
hi,i,"am , sam", y
hello ,good, morning
abcd, " ef, gh " ,ij
no, "good,morning", yes, "good , afternoon"
from this file I have to split the fields on basis of comma"," however, I the data present inside double qoutes should be treated as... (3 Replies)
Hi,
Trying to change the prompt. I have the following code.
export PS1='
<${USER}@`hostname -s`>$ '
The hostname is not displayed
<abc@`hostname -s`>$ uname -a
AIX xyz 1 6 00F736154C00
<adcwl4h@`hostname -s`>$
If I use double quotes, then the hostname is printed properly but... (3 Replies)
Hi All,
I'm unable to load the data using sql loader where there are double quotes within the double quotes As these are optionally enclosed by double quotes.
Sample Data :
"221100",138.00,"D","0019/1477","44012075","49938","49938/15043000","Television - 22" Refurbished - Airwave","Supply... (6 Replies)
Please use code tags
Hi,
I have input data is below format and n of column in the multiple flat files. the string data has any double quotes(") values replaced to double double quotes for all the columns{"").
Also, my input flat file each column string data has carriage of new line too.... (14 Replies)