This has useless use of cat and useless use of backticks all over the place. ( $( ) is roughly equivalent to backticks.) Also, you don't need to tell every separate statement to write to your logfile, you can redirect your entire while loop to get the output of everything inside it.
Also, the errors are going to standard error, fd 2, not the usual standard output. You can redirect them like 2>file, or send them back into standard output with 2>&1
So, how about:
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Quote:
I do this for may servers and I want to know to which servers I can login or not...
You don't even need the error text to know whether the server logged in or not, the program tells the shell whether it succeeded or not, directly. Every program you run returns an error code, zero for success, anything else for error.
How would I pass awk output to a perl variable?
For example, I want to save the value in the 4th column into the variable called test. My best guess is something as follow, but I am sure this isn't correct.
$test = system("awk '/NUMBER/{print \$4}' $_"); (8 Replies)
hi all i am trying to save an awk value into an array in bash:
total=`awk '{sum+=$3} END {print sum}' "$count".txt"`
((count++))
the above statement is in a while loop..
$count is to keep track of file numbers (1.txt,2.txt,3.txt,etc.)
i get the following error:
./lines1:... (1 Reply)
Hello,
I have a shell script containing a command string in the following format:
command1 | command2 | cut -c9-16
The output from this is a record number (using characters 9-16 of the original output string) e.g. ORD-1234
I wish to save this value to a variable for use in later commands... (4 Replies)
Good morning everyone,
i am looking to know how to save the output of a command and reuse it again within a script
i already tired this one but it didn't work
TEMPDIR=/dir1/dir2
My_command> $TEMPDIR/$TEMPFILE
rm $TEMPDIR/$TEMPFILE*
it keeps saying "cannot write to a... (15 Replies)
Hi all........
Plss do help me.......in a big trouble... :wall::wall::wall:
I have 3 directories named as :1. /home/shuchi/source
2./home/shuchi/destination
3./home/shuchi/filter
now the problem is /home/shuchi/source has say 2 files with extension .txt as given below :
A.txt
Code:
... (0 Replies)
Hi all........
Plss do help me.......in a big trouble... :wall::wall::wall:
I have 3 directories named as :1. /home/shuchi/source
2./home/shuchi/destination
3./home/shuchi/filter
now the problem is /home/shuchi/source has say 2 files with extension .txt as given below :
A.txt
msisdn ... (5 Replies)
I have been trying this program for a long time. I am trying to read a file named "odon" line by line; read the first line, send it to do a command saved in a file "perm", once the first line has finished going through the content of the file perm, the result is saved with the number of the line.... (17 Replies)
Shell : bash
OS : Oracle Linux 6.4
I want to save the ouput of a nohup command to file other than nohup.out . Below are my 3 attempts.
For both Attempt1 and Attempt2 , the redirection logs the output correctly to the output file. But I get the error "ignoring input and redirecting stderr to... (7 Replies)
Hi,
i need help with a file creation of an output program. I've got a program that with #find creates an output for each files in a directory.
If i give this command :
-o spec$(date -u +%Y%m%dt%H%M)
it creates just one file, overwriting all the others since it is the creation date .... (2 Replies)
Hi,
I am working on a script where I am adding adding colors to few of the info in the output.
Now , after that is done , I see colour codes in log files which I don't want to see.:mad::mad::mad::mad:
So , I tried using sed command in script as below which gives me o/p (new.log) as blank file... (7 Replies)