I'd like to redirect the output to a file and to the console. I know about tee but the issue is that it waits until the first process finishes.e.gecho "hello world" | tee test.txtfirst calls echo and then tee.Is there a way to redirect "on the fly" ?
View 5 RepliesI am trying to grep multiple numbers from file, grep does have the -f option for that.
Code: grep -f <`seq 500 520` /etc/passwd I know this could be done with
Code: for i in `seq 500 520`; do grep "$i" /etc/passwd; done But my question is fare more behind this example. It is possible to redirect one command output which will be treat as a content of file for another command ?
I want to redirect the output of a command to a file, but not at the end of the file, but after a line. Do you know how can I do it?
Something like:
cat file_a | grep some_text >> resulting_file
# in this file I need to place the output from grep, but not at the bottom of resulting_file, like it would normally happen, but after line .. 3 , for example
Then, if file_a is:
abc x
some_text q
zxc w
[Code]....
I am again struggling to make a script work, but hey, it is fun, I am learning new things. I discovered the set -x option which was, for me, like the second coming. Still, what I am not able to do is redirect ALL output to a (log) file, including what is produced by the -x setting. Let's assume a very simple script:
Code: #!/bin/bash
set -x
source="/home/atelier/Bureau/"
ls -la $source and I am running it as . test.sh >> /var/log/test.rmcb.log
The result of ls goes inded into the log file, but the rest still shows on the console where I am running the script: Code: ++ source=/home/atelier/Bureau/
++ ls --color=auto -la /home/atelier/Bureau/ Is there a way to redirect EVERYTHING to the log file ?
Ubuntu 10.04
I booted to command line only and entered the following command: Sudo Xorg -configure > xorglog.txt
the command seems to run just fine and does create a new xorg.conf.new file but I would like to see all the output of the Xorg -configure command but it just scrolls by too fast and I can't go back to see it. Hence this is why I'm trying to do the > . It seems to ignore the >.
how I can see what the command is doing?
I was trying to redirect the output of two variables to different columns of a .csv file in MS excel like this,
Code:
echo "$a $b" > abc.csv
But I am getting both $a and $b in the same column, is there anything I can use instead of to move the value of $b to the next column? Or is there a good different approach to do it?
I wrote a short script that sleeps for 30 seconds then outputs "Done" to the screen:
sleep 30
echo Done
now I want to re-direct the output to a file, I tried:
./scriptName& > fileName
Didn't work, "Done" still came out to the screen.
I have a python script that when run outputs to screen.
eg.
./international_sms_check.py 0403000511 919227434827
TS 21 check ok
TS 22 check ok
sms successfully delivered from 61403000511 to 919227434827
But when I try:./international_sms_check.py 0403000511 919227434827 > test
The file test is created but there is nothing in it.if I try ls > test this works fine with output of ls redirected to file test.
I have got a script with an outer and inner loop. The inner loop issues loads of echo's which need to be redirected to a log file determined by the outer loop. The obvious solution is to redirect every echo to >$LOG and set LOG in the outer loop.
Code:
for f in $FILES ; do
LOG=<logfile>
for l in $LINES ; do
[code]....
it is possible to map stdout to $LOG in the outer loop without having to redirect every subsequent individual command output?
I did a select on my db and now I need that this if consult return true for me salve the columns information in file. How I do this in Shell?!
View 3 Replies View RelatedI am writing a script in which I am using AWK to append to a line in a file and save the file. The command I am using is:
Code:
awk '{s=$0; if ( NR==4 ){s=s ":/usr/java/jdk1.6.0_19/bin" } print s;}' $appName > $appName.new
[code]...
I'm working on some scheduled task script files to keep nightly backups of some of our database information in place, and it's a bit annoying when they blow up. I know how to redirect stdout and stderr to a flat file I can view when I come in, and I know that 2>&1 maps them both to the same file (whatever was named in 1). However, I'm running into some cron-time situations where it's easier to have the two streams together, and other cron-time situations where it's easier to have them separated. I can't really tell which is going to happen; is there some way I could create both kinds of output file for my scripts, so that I've got a std_err only file and an interleaved std_out/std_err file?
Note: I've looked at the 'tee' command, but I don't think it will work for what I'm after. 'tee' appears to only work with stdout; I'm trying to work with stderr.
Is there one command that will let me record an entire terminal session (with any possible errors) to a text file while also seeing all output on screen too? I know it can be done for individual commands, but I'm looking to do this for an entire session where the individual commands will be normal (i.e., not piped into tee, etc.). It would be even better if the command prompt is captured too. The obvious utility of this makes me think someone surely has come up with a solution long ago (probably in the 60's).(I'm sure it goes without saying, but subsequent output in that session should be appended to the file. The file should contain the full history, with all output and errors, of the session.)
View 9 Replies View RelatedMy hardware is the FriendlyArm mini2440 Samsung board. I run our main application from init.d/rcS. It uses printf's to display continuous program debug information that can be seen on the serial ttySAC2 console. I would like to be able to remotely view this information by a telnet connection when needed. What is the best way to accomplish this? The telnet user can possibly activate some script or program. I saw there is a ttysnoop program that I could not get to compile.
There must be a simpler way. There must be several ways. Instead of using printf I could do something else. I do not want to use a normal log file to the flash file system. I had thought of using a ram file in /var directory but it would complicate matters as I would need to limit its size and the telnet user needs to view the program's printfs in a real time fashion.
The serial console is for debugging and will physically disappear when product is mature. However, there are many background processes that may print out statuses/results. These go to /dev/console or serial console. Telnet will be the only way to get a console. I tried netconsole (with netcat) and it works, but it is only for kernel printk messages. I tried "program > /dev/pts/0" and it works also. it would be better if I can just change/add the console /dev/pts/0 to the existing /dev/console.
View 3 Replies View RelatedMy Problem: The output redirection auf a script works if the script is called in the terminal but not when its called via crontab.
My Situation: I have 2 scripts:
~/backup1
Code:
echo backup a to c
rsync -a -v --progress --delete --exclude=.Trash-1000 /path/a/ /path/c/backup/
echo backup b to c
[Code]...
How system call internals could be known ? I mean for example if i take the example of write system call of linux kernel, where i can find out the code of write() system call in the kernel source tree ? The problem is write() system call directly write on console.If we want to write the data on some web page then write() system call will not do that ? How to redirect out data from console to application like html/web page?
View 6 Replies View Relatedif I'm posting to the wrong forum. Be so kind to tell me where to better ask this question, as I'm really not finding the right words to google for.So, I have a shell application (fdb) which is a Flash debugger. I want to run it using bash script, capture it's output and pass it the commands (it can read from STDIN). The reason I want to do so is that Flash Builder (the IDE for Flash development) is plain stupid when it comes to compilation, and it won't allow me to compile any file in the project... so, I found out that I can make Eclipse to run an external tool. This external tool is my *.sh file whichches the compiler, and then it launches the debugger.The Eclipse console can display the compilation results, or errors. When I run the debugger it can even pass the input from Eclipse console to the debugger, however, the output from the debugger isn't shown.
View 1 Replies View Relatedi got a bash script which can remind me my friends' birthday ,and i want run it as a cron job everyday,but the linux just emails me the output.Now my question is how to how to redirect the cron output to screen.
PS: when i run the script mannually ,it runs very well,so my script is good. And i have tried :
1.30 8 * * * root /home/birth.sh >/dev/console
it shows nothing
2. 30 8 * * * root /home/birth.sh >/dev/tty1
the same as 1
3. 30 8 * * * root /home/birth.sh >/dev/tty
it shows:/bin/sh: cannot create /dev/tty: No such device or address
How to redirect output from dd command to /dev/null ?
View 2 Replies View RelatedI am using curl as the following
Code:
curl "http://site.com/pages/{1,2,3,4,5}.html" > /home/myuser/allpages.html
i need to save each page in a separate page by the way i have tried this command
Code:
curl "http://site.com/pages/{1,2,3,4,5}.html" > /home/myuser/{1,2,3,4,5}.html
but it displays error
Code:
ambiguous redirect
is there any way to do that
I'm doing some commands on a remote server (using ssh to log on to the remote server, did a ssh key swap), how do i redirect the output of a command back to the local server ?the person who helps me out is my HERO i'm really stuck on this and it would bring me a lot further if i get this to work
View 14 Replies View RelatedHow do run aureport as root and redirect it's output to a directory that's only writeable by root?
Ex: sudo -u root aureport > /var/log/test.report
/var/log/test.report permission denied
/var/log has these permissions:
drwxr-xr-x root root
I would really like to capture the output of scp and my file's progress. Scp updates the transfer rate every 1 second, and I will like to save the transfer rate at every update. So for example, if the file transfer takes 30 seconds, I would like 30 reports of the transfer rate.
The output looks like:
Code:
file.dat 1% 3664KB 938.5KB/s 05:48
Whenever I try a simple redirect like:
Code:
scp file.dat 192.168.1.100:~/ &> output
... it does not save the rate at every update, it only shows the final rate.
If I try using typescript by starting "script" ... it's the same deal.
I have a huge database of students, I would like extract these data and write to individual file for each students.
I am running a loop in shell program (.sh file), the output of each run in the loop need to redirected to a file with variable name.
I tried the following line, but it did not work, where BodyMsg is the data and Rollno is the students roll number.
echo $BodyMsg > $RolNo".html"
I need to output of the script to the remote server via redirect. I created a simple script for your reference.Quote:
#!/bin/bash
W=`/usr/bin/w`
FREE=`/usr/bin/free`
[code]...
I want to compare the quality of a sound file (voice) before and after its transmission via a softphone (sjphone in my case). For this, i need to redirect the sound played, to the sound input (microphone or line-in).
View 1 Replies View Relatedi have a process launch by another app, i want to see the output (that is in console) in a terminal (gnome-terminal or tty); how can i capture de standart I/O from a process. my process (aria2) is launch by firefox and the output of ps is like:
# ps aux | grep aria2
dorian 30289 2.8 0.1 12148 4048 ? D 07:08 0:03 aria2c --continue -d /home/downloads/so/suse --referer=http://software.opensuse.org/112/en
...is running but i cant see the output (download state), how can i capture or redirect standart I/O to my terminal to get something like the output of:
$ aria2c --continue -d /home/downloads/so/suse --referer=http://software.opensuse.org/112/en --load-cookies=/tmp/flashgot.h2fnxf84.default/cookies --input-file=/tmp/flashgot.h2fnxf84.default/flashgot.fgt
[#1 SIZE:6.7MiB/4,289.3MiB(0%) CN:5 SPD:25.3KiBs ETA:48h01m01s]
I have a TV card connected to my Dish box, and I would like to use it on my computer. The tv card works fine, and the audio is connected to my line in. The audio card receives the audio signal, and I can set the volume and record it without any problem, but I can't get it to redirect to an output in order to hear the sound. I have been battling with this issue since a kernel update back when 11.2 was about to come out. Back then, the alsa mixer had an option called audio loop-back, which did the trick. Since I know I ca record the audio and play it back without any problem, is there an application that can do this automatically and simultaneously?
View 1 Replies View RelatedI am trying to automate an svnadmin dump command for a backup script, and I want to do something like this:
find /var/svn/* ( ! -name dir -prune ) -type d -exec svnadmin dump {} > {}.svn ;
This seems to work, in that it looks through each svn repository in /var/svn, and runs svnadmin dump on it.
However, the second {} in the exec command doesn't get substituted for the name of the directory being processed. It basically just results a single file named {}.svn.
I suspect that this is because the shell interprets > to end the find command, and it tries redirecting stdout from that command to the file named {}.svn.