The stdout tag has no wiki summary.
2
votes
3answers
73 views
Output to stdout and at the same time grep into a file
I have a script that outputs text to stdout. I want to see all this output in my terminal, and at the same time I want to filter some lines and save them in a file. Example:
$ myscript
Line A
Line B
...
8
votes
1answer
100 views
Output of command not in stderr nor stdout
I've stumbled on this issue, so I'm wondering how is this possible?
Standard run of command:
# zabbix_sender -c zabbix_agentd.conf -k mmysql.QCInserts -o 14
info from server: "Processed 0 Failed 1 ...
3
votes
2answers
54 views
Read data from a pipe for a certain amount of time (in seconds)
Is there an easy way to create a pipe that only lasts for a given amount of wall time?
I want to be able to take a "snapshot" of what's being written STDOUT for a period of time (rather than bytes or ...
2
votes
2answers
44 views
redirecting std output and std error
I have been trying to figure out the relationship between file descriptors. One thing I don't understand is, how is:
ls -l /bin/usr > ls-output.txt 2>&1
different from:
ls -l /bin/usr ...
1
vote
2answers
38 views
Turning standard output hyphen into a single command
I am working with scripts that output xml and I am using xmllint to format the output. Xmllint requires a source argument, so I use the hyphen to pipe standard output to it:
$> script.php ...
5
votes
1answer
32 views
IO and other shell commands when a program is not started by a terminal
I have several launchers on my desktop for various programs, and there is a "run in a terminal" setting for those launchers.
When I check that setting, the program runs from a terminal, and logs its ...
2
votes
2answers
76 views
Tail -f piped through grep not outputing to file, but outputs to console
I'm using the following command
tail -f /mydir/myfile | grep "searchterm" >> outfile
Without the '-f' it works fine, but with the '-f', which I need, nothing is written to the file. The ...
4
votes
2answers
140 views
GNU screen: print a detached session to stdout
I just want to have a quick overview of my detached GNU screen sessions. Is it possible to dump the current content to stdout ? Something like
screen --print SESSION_NAME > file.txt
4
votes
1answer
271 views
Ksh loses data after piping 16K bytes
I recently found that ksh may lose some data after printing more than 16K bytes to the stdout if it is blocked for a couple of seconds.
This test.sh script prints out 257*64 (16448) bytes:
...
1
vote
3answers
131 views
grep how to suppress display of non-matched file?
I am trying to find files containing a specific word using grep. There are many files in the directory (> 500)
Command I run
$ grep 'delete' *
Output
validate_data_stage1:0
validate_data_stage2:0
...
1
vote
1answer
339 views
How can I get vsftpd version into shell variable?
I want to get vsftpd version into shell variable. I can get it to console with ease:
# vsftpd -version
vsftpd: version 2.2.2
Also I can get a lot of other info into variable:
# i=`bash --version ...
0
votes
2answers
89 views
sudo: script launched from another script won't redirect standard output
I'm using AIX 5.3 with sudo 1.6.9p23. Sudoers file grants user fcomartin permission to run any command as user oas:
fcomarti ALL=(oas) ALL
User oas has a bash script called menu, which launches ...
7
votes
2answers
152 views
How a piped shell programs balance their output/input rates? [duplicate]
Possible Duplicate:
Bash while loop and reading from pipe
I come from web programming background, and find myself interested in one peculiarity of using a local shell. I understand that ...
2
votes
2answers
267 views
How to redirect error to a file?
I have this simple script which redirects the output and append it to a file.
filename="/home/ronnie/tmp/hello"
date=$(date)
echo "$date" >> $filename
Now, lets suppose I change date=$(date) ...
1
vote
2answers
110 views
Redirecting tr stdout to a file [duplicate]
Possible Duplicate:
How can I make iconv replace the input file with the converted output?
Can I read and write to the same file in Linux without overwriting it?
$ cat test.txt
This is a ...
