I am testing some bash script using -fx flags:
#!/bin/bash -fx
Now when the program runs i get output in which i need to trace i my script the different lines.
Is there some built-in flag for line numbers output on debugging?
What I am trying to accomplish is a way to read only the lines that have been added to the file mylog0 since the last time the script looped (5 seconds). I am open to new suggestions too, I have been stuck on this little script for a few hours already.
Code: #!/bin/bash
i=0
firstline=0
[code]...
Does anyone know of a way to single-step through Bash shell scripts in order to debug? (similar to the way Windows 98 used to let you single-step through autoexec.bat)
View 2 Replies View RelatedDoes anyone know how can one improve his debugging skills or how can one narrow down the problem and try to get to the solution ASAP.Or rather how once should approach a problem.I know this is a bit vague question but I want to know how you people approach?
View 3 Replies View Relatedthis is driving me crazy. How can i in the terminal, display only the first 5 lines of say dmesg
View 7 Replies View RelatedI have a few rather large text files, and I need a way to look at the first three lines of each. Is there a way to do this using awk?
View 3 Replies View Relatedi have a text file generated automatically from a script , but the result in the script is not ordered in a readable way, so i need your help to fix it using a shell command the text file contain data in this way :
Code:
0.147361 0.243688 0.081520 -0.446603 1.130529 NC_000846 Chordata
Rheiformes
Aves
0.091740 0.379224 0.021160 -0.088493 3.441356 NC_000857 Arthropoda
Diptera
[code]....
i want to arrange the data in this text file in a way that each line will concatenate the 2 lines after it , so that will be 1 line , i want all the lines to be treated in this way ,
I really need help with this part of a shell script which I am trying to migrate to DOS batch script.
View 3 Replies View RelatedI have a file with semi duplicate lines, like:
abc 12 32
agsi 82
sha 26
abc 1
iaij
agsi 3
Now I want to edit my file and make it:
abc 12 32
agsi 82
sha 26
iaij
i.e. remove second occurrence of line when 1st column is abc or agsi.
I have such a file(test.txt):
abc 123 456
abc 256 145
axd 125 225
[code]...
Is it possible to use the keyboard in order to select some text in the terminal windows that is not in the currently edited line? (for example, in order to copy part of previous command output).
View 3 Replies View RelatedI have a series of input files formatted like this:
Code:
RTREVF, KOG3266 = 111
RTREVF, KOG3294 = 130
RTREVF, KOG3295 = 177
WAGF, KOG3307 = 107
JTTF, KOG3320 = 174
Each line represents a portion of a data matrix. I want to convert the numbers after the "=" to the range of that partition in the matrix such that the output file looks like this:
Code:
RTREVF, KOG3266 = 1-111
RTREVF, KOG3294 = 112-241
RTREVF, KOG3295 = 242-418
WAGF, KOG3307 = 419-525
JTTF, KOG3320 = 526-699
I wanted to know if it's possible to print a "shell" of a folder. I dont know how to exactly explain it, so I'll just explain what I want to do. Essentially, I want to retain the folder hierarchy in my music folder without the individual files, and print it to a file or something. I eventually would like to be able to read the output into a database.
View 5 Replies View RelatedI have been experiencing a problem where the screen loads and after initial first few lines breaks up into multiple repetitions of lines. Reloading helps but has to be repeated when pageing down. Mail is no problem; it is supplied by my network provider. OS is openSUSE 11.2 which I update when advised. Below is a sample from the error console:
[Code]...
I've just installed Kubuntu 11.04, switched on wobbly windows effect. It runs very smooth on my Nvidia GeForce 7600 GS with dual screen twinview turned on. However, I get these lines when I drag/move the window upwards - see screenshot:
View 6 Replies View RelatedHow do you remove parts of strings using python? Such as, if I have something like:
Code:
erme1 sdifskenklsd
erme2 sdfjksliel
[code]....
I've come across an unusual requirement for a service in my Ubuntu system.Simply put, I need to find a way to search for all instances of a term in a file, delete lines containing containing that term, and delete four lines below each instance of that term. ither that, or copy the entirety of a file to a new file and skip over all lines containing the term plus four below it.This sounds kinda weird, I know. Without going too far into detail, I either have to change the logfile format for a server I'm running which is a huge pain in the butt, or I can just run a script to edit an HTML report generated from said logs. (Said report is really just for managers to peruse, and I like my log format, so I'm pursuing option 2.)
View 4 Replies View RelatedI initially had a problem accessing the CUPS interface (see my other post) and got that resolved by adding the user "cupsys". Now, everything "looks" ok, and when I print a test page, it shows it as completed (in CUPS). However, the page never prints.
The printer is a Canon MP600 (using the canonmp600en.ppd file to configure it). Here's the output of my conf file.
Code:
# Show troubleshooting information in error_log.
LogLevel debug
[code]...
Interesting problem: For the first time with Xubuntu 10.10 64bit, I am finding certain applications print corrupt. A varying amount of letters / numbers either get substituted/print a blank space/ print a box etc etc. This corruption seems to happen from a Pdf ( evince ) or Spreadheet ( Gnumeric ) Opening the same Pdf on another machine (ubuntu 10.10 32bit) prints perfectly. Opening the same .xls file on the original computer but using OOo Calc prints perfectly.
I guess I have ruled out any problems with the printer itself or the network JetDirect box. I have re-installed CUPS and evince and upgraded to the latest version of HPLIP but the problem appears unchanged.
I cannot print pdf files. I have tried using okular and xpdf. The documents display in the program, but print preview shows a blank page. The printer then sends out blank pages. I have tried printing on 2 different printers using usb cables. Using terminal to process the commands shows error:
Quote:
xxx@xxx:~$ xpdf
***** MediaBox = ll:0,0 ur:611.976,791.968
***** CropBox = ll:0,0 ur:611.976,791.968
***** Rotate = 0
Segmentation fault
Converting to .ps also is blank.
My wife has a canon MP470 printer and running ubuntu 10.10. I am able to print black and white, but unable to print photos. I got it to work using another driver, but not the 'correct' one for this printer. I have searched a bit and don't see anything about ubuntu 10.10, just older versions. Or should I just network her to my printer....?
View 5 Replies View RelatedI'm running Kubuntu 10.10 with a Laserjet 5M printer. When I attempt to print a job from Firefox or from Okular, the job never gets onto the print queue. However, I can print test pages on the printer and also print from OpenOffice, so this seems to be app-dependent. I know the jobs aren't being queued because the job number doesn't increase (as shown by the jobs for the test pages). Both Firefox and Ocular give every indication that the print job has been processed correctly.
View 1 Replies View RelatedNot sure when CUPS started acting up. I have the latest 13.1 current software installed.The first page to print is always OK, but all succeeding pages are overwritten. The second page shows the first page on top of it, and the third shows the preceding pages on top of it - and so on. Has anyone else seen this problem?I guess the printer buffer is not getting flushed correctly. If my configurations were trashed in some way, I don't know where to look for a fix.
View 14 Replies View RelatedIs it possible to debug a makefile? In a bash script I can use "set -x" so that all variables are shown with their values. I am looking for such feature in makefile to see the variables and their values.
View 2 Replies View RelatedI tried to debug a C++ project in Eclipse Helios, last release. I set breakpoints in some non-main functions, but the debug function never stops there, and I get a warning message which says
"breakpoint attribute problem installation failed" What could be the reason?
PS: The same problem also happens with Eclipse Galileo, last release PS2: I found here info about the bug but no solution:[URL]..
How can I combine multiple single page prints into a single print job? For example, using Firefox on Linux one can print a web page such that each sheet of paper has four pages printed upon it. I would like to combine several separate web pages so that for example, web-page-a, web-page-b and web-page-c (each less than one print page long) are printed on a single sheet of paper.
I would like to do this without having to use some form of image editor to combine and manage manually created temporary files.
Just installed drivers for Lexmark pro200 - S500 series. However although it is recognised by the system and has a tick by its name, And tells me it is connected via usb file goes to print que but will not print. Also tells me it is Printing - localhost! is this correct?.
View 1 Replies View RelatedI'm preparing for an interview and came across this question in a forum:
If your browser crashes, how would you debug it only using the command line?
For simplicity, let's assume it's a Firefox browser on a *nix environment.
I am trying to debug a problem where I can't connect to a remote SSH server. I do not have admin rights on the box, however I have a valid account and can login fine with a password, I just wanted to use my public key instead.
I copied over my ~/.ssh/id_rsa.pub to the remote server to ~/.ssh/authorized_keys. I tried to connect to the server but it is not allowing me to authenticate when I ask it to use public keys instead of passwords.
Code:
ryan@TehLaptop:~$ ssh -v -o PreferredAuthentications=publickey ryan@unix.xxxxxxx.xxx
OpenSSH_5.5p1 Debian-4ubuntu4, OpenSSL 0.9.8o 01 Jun 2010
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: Applying options for *
debug1: Connecting to unix.xxxxx.xxx [xxx.xxx.xxx.xxx] port 22.
[Code].....
This hasn't happened to me before, but I develop for the Android platform and (perhaps needless to say) I really need to be able to debug on a real device. On past installs, my device was recognized automatically and debugging was as easy as checking "debug" in the Android's settings, but now (after updating to Maverick from Lucid) the phone registers with adb as?It mentions some necessary tasks for set-up on Ubuntu, but only mentions this process for Dapper/Gutsy/Hardy. Is there any personal experience out there that can confirm that this works and/or is necessary on Maverick?
View 1 Replies View Related