10 More Discussions You Might Find Interesting
1. UNIX for Beginners Questions & Answers
Hi,
I was reviewing a shell script and I found this line:
yum -y update >> >(/usr/bin/tee /var/log/file)
I have tried removing the >> directive and all that will occur is that the file will be created--nothing gets put in the file. If I put back the >> directive it works. If I remove the... (3 Replies)
Discussion started by: mojoman
3 Replies
2. Shell Programming and Scripting
input1
john 20
bob 30
input2
john 60
bob 100
cat input1 >> output
cat input2 >> output
ouput
john 20
bob 30
john 60
bob 100
desired output
input1 input1 input2 input2
john 20 john 60 (3 Replies)
Discussion started by: quincyjones
3 Replies
3. Shell Programming and Scripting
Hello,
i'm trying to force a command to read every second from an interface
watch -n1 (command) /dev/x | cat >> output
but it continue to overwrite the file, without append the content
Thanks and advace for help as usual
regards (4 Replies)
Discussion started by: Board27
4 Replies
4. Shell Programming and Scripting
Hi All,
I have a file where I am converting newlines to comma separated values but I would like to append zero if the output is empty
Here is the command I am using
sed -n -e 'H;${x;s/\n/,/g;s/^,//;p;}' test1.txt
test1.txt will have comma seperated values but sometimes this file can be... (6 Replies)
Discussion started by: rajeevm
6 Replies
5. Shell Programming and Scripting
Hi All, can you help me with this:
grep XXX dir/*.txt|wc -l > newfile.txt - this put the results in the newfile.txt, but I want to add another column in the newfile.txt, string 'YYYYY', separated somehow, which corresponds on the grep results?
For example grep will grep XXX dir/*.txt|wc -l >... (5 Replies)
Discussion started by: apenkov
5 Replies
6. Shell Programming and Scripting
Hi experts
i have a simple script that fetches the count from different servers and inserts ahead of server name like below
servera,1
serverb,25
serverc,35
what i want to do is now when i run this script next day i want that output to be next to the earlier one like below and if possible... (5 Replies)
Discussion started by: raj2989
5 Replies
7. UNIX for Dummies Questions & Answers
I am running a command which has a parameter that outputs the results to a file each time it is run.
Here is the command:
--fullresult=true > importlog.xml
Can I add the output to the file rather than creating a new one which overwrites the existing one?
If not can I make the file name... (2 Replies)
Discussion started by: Sepia
2 Replies
8. Shell Programming and Scripting
Hi All,
Am using the below script to produce some statistics. Currently it send the results to a log file and sends the contents of the log to a mail ID.
Next time when it runs it erases the previous log and writes the latest output to the log file.
I want the output to be appended to... (2 Replies)
Discussion started by: nirmal84
2 Replies
9. Shell Programming and Scripting
Hi All,
I am writing a Perl script such that the output from "perl myscript.pl file1" to be appended to another file name called file2.
I tried out with the below code but couldn't work.
Can any expert give me some advice?
open(OUTPUT, 'perl myscript.pl file1 |');
close OUTPUT;... (7 Replies)
Discussion started by: Raynon
7 Replies
10. Shell Programming and Scripting
Hi,
I have a script below. It get's the data from the output of a script that is running hourly. My problem is every time my script runs, it deletes the previous data and put the current data. Please see output below. What I would like to do is to have the hourly output to be appended on the... (3 Replies)
Discussion started by: ayhanne
3 Replies