Ubuntu :: Capture And Redirect The Output Using Bash?
Jun 3, 2010
if 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.
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 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 "$i" /etc/passwd; done But my question is fare more behind this example. It is possible to redirect one command output which will be treat as a content of file for another command ?
I have a script that generates a bunch of output, including the expansions details provided by: set -v -xI am trying to pipe everything that is displayed to a file, in addition to displaying it on the screen. I've managed to get stderr and stdout into the file, but the expansions are only printed to the screen. Here is what I have so far:sudo -u <user> source my_job.sh |tee my_log.txt 2>&1
I have got a script with an outer and inner loop. The inner loop issues loads of echo's which need to be redirected to a log file determined by the outer loop. The obvious solution is to redirect every echo to >$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 have a set of bash scripts that I'm running that automatically build a set of packages for me and redirect their output into logs. Basically, I have a bunch of lines that are something like this: ${CONFIGURE_DIR}/configure &> ${LOG_DIR}/log or cd ${CONFIGURE_DIR} && make &> ${LOG_DIR}/log, etc.
This is supposed to make the entire process silent. However, sometimes with some packages some output leaks to my console (either stdout or stderr). I'm thinking that maybe the configure scripts/make are executing commands within new shell instances that don't inherit my redirect, or something to that effect.
Another reason for thinking this is that in another part of my script I detect errors when running make by testing with "if [ $? -ne 0 ]", and if the redirect leaks to my console and also the leaked output indicates that the build failed ("make: Error" and so on), then my $? test fails (i.e., it thinks that $? == 0, whereas a failed make should return a non-zero value). It's as if my original script can't "see" the results from child commands executed from later scripts.
My 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
I have this file:Code:vid-gd-19940626-peggy.rmI would like to extract the audio and copy to a file to burn on a CD.'pitivi' will load the file and show the audio timeline. But I can not find a save or copy button.'vlc' will play the file but I can not find how to seperate/save the audio.I found a 'ffmpeg' that is suppose to read whatever is being sent to your speakers.Code:ffmpeg -f oss -i /dev/dsp -f video4linux2 out.wavThis produce a file that 'mplayer', 'vlc', 'audacity' will load but it is empty of useful data. Black screen only.This is the second week I have worked on this. Either I'm googling for the wrong words or what I'm reading, I don't understand.
In synaptic package manager when I expand "Details" tab (at the time when some software is installed or removed), I can see a terminal. I want to capture the output of terminal into a file. I tried to highlight and right click. But there is no context menu(copy, cut)
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
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" ?
i 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
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 $source and I am running it as . test.sh >> /var/log/test.rmcb.log
The result of ls goes inded into the log file, but the rest still shows on the console where I am running the script: Code: ++ source=/home/atelier/Bureau/ ++ ls --color=auto -la /home/atelier/Bureau/ Is there a way to redirect EVERYTHING to the log file ?
I booted to command line only and entered the following command: Sudo Xorg -configure > xorglog.txt
the command seems to run just fine and does create a new xorg.conf.new file but I would like to see all the output of the Xorg -configure command but it just scrolls by too fast and I can't go back to see it. Hence this is why I'm trying to do the > . It seems to ignore the >.
Code: curl "http://site.com/pages/{1,2,3,4,5}.html" > /home/myuser/allpages.html i need to save each page in a separate page by the way i have tried this command Code: curl "http://site.com/pages/{1,2,3,4,5}.html" > /home/myuser/{1,2,3,4,5}.html but it displays error Code: ambiguous redirect is there any way to do that
I was trying to redirect the output of two variables to different columns of a .csv file in MS excel like this,
Code: echo "$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'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
I'm trying to record my desktop and tested some solutions. While I was impressed how small .mng files could be, it is a disadvantage that I can't capture audio with it and many users won't be able to open these (browser / Windows). I have been very impressed by the xvidcap instruction videos: 4:30 in only 9MB, which makes 180MB for 90 minutes. This would be suitable. With Camtasia my professor even records 90min in 100MB. The problem is that xvidcap hasn't been updated since 2006 and seems to be dead. RecordMyDesktop needs 6MB for 1 minute or 540MB for 90 minutes, which is too much. Could anybody give me some hints on how to capture very small video files, which are still clear enough to read text in a format most users can open? It would also be cool to be able to show specific PDF or HTML pages synchronised to the video.
I have 3 old video capture cards which I would like to use for CCTV. Each card supports 1 camera. So I would like to have 3 cameras setup in the end and monitor them with zoneminder. When each card is plugged in on it's own, it works fine. Video comes through clearly with xawtv and zoneminder. However as soon as I plug in a 2nd card (with or without a camera connected) the output in xawtv and zoneminder goes haywire. It looks like the 2nd card takes over the first card, resulting in majority of the picture coming from the 2nd card, and some (if any) from the 1st card. When viewing either of the two cards /dev/video0 or /dev/video1 in xawtv the output is identical. I've tried this on a fresh 10.04 Ubuntu install, and on an older MythTV debian computer, the same results. Here are lspci -vv outputs with 2 combinations of cards (same fuzzy output):
[URL]
My thoughts are because the capture cards are cheap (similar to winmodems), the problem may be in the software kernel modules not allowing room for other similar capture cards to run at the same time. Can anyone suggest me in the right direction? Do I need to setup some sort of memory allocation for each card manually? Something in the BIOS? An extra option when the card modules are loaded?
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).
i 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:
...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:
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.
