Excerpt from the Wikipedia page: Unix is a multitasking, multi-user computer operating system originally developed in 1969 by a group of AT&T employees at Bell Labs. Today, it is a modern OS with many commercial flavors and licensees. It has also greatly influenced the development of a ...
1
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2answers
41 views
How to scroll backwards when displaying file using “more” command?
Return scrolls forward. How do I scroll backward one line at a time?
1
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1answer
15 views
decode legacy crypt-ed file with mcrypt
I have an old file which I encrypted with old UNIX-style crypt on Solaris. (Yes, I know it's weak, but it was appropriate in this case.)
I now want to decrypt it but I am running Ubuntu which doesn't ...
0
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0answers
8 views
monitoring the number of mv/rename per second on linux redhat
How can you monitor the number of mv/rename per second inside a specific directory/file system, for one particular user, on linux (redhat) ?
2
votes
1answer
18 views
syntax for linux/unix command “column”
Manpages for the command "column" show:
column [-tx] [-c columns] [-s sep] [file ...]
-s Specify a set of characters to be used to delimit
columns for the -t option.
I could not ...
1
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1answer
21 views
solaris + egrep command syntax not work
my target is to match snmpmanager string from /etc/hosts file in Solaris machine
I don’t get any match output from the following command (but snmpmanager already defined in host file) why??
egrep ...
0
votes
2answers
31 views
Send a file from Windows to Unix as a nightly schedule
Let's say I have a common directory on a Windows server such as: \\servername\location\common. During the day, any user can come and add/remove files to that Windows directory.
How would I setup a ...
0
votes
1answer
14 views
Linux install password lost and found
I just installed Linux on a virtual machine. During the installation, I setup account and password but later when I try to log in (after installation completes), I forget the password thinking I am ...
0
votes
2answers
33 views
how do i transfer files from my pc to a unix account in school?
I believe Window SCP can do it, but I want to know if there is a command which I can use to transfer a file from my laptop to my unix account in school.
I will be using putty.
0
votes
1answer
16 views
find command giving different outputs with/without -print
find src/ -name "*.cc" -o -name "*.cpp" -print
find src/ -name "*.cc" -o -name "*.cpp"
The intended behavior is to find all C++ files in a directory and all its subdirectories. As I understood it, ...
0
votes
1answer
34 views
Unable to edit files in _www group on OS X
I am using my MacBook as a local dev environment. In order to make the files publishable I had to give my web folder user and group of _www:_www using chown.
I'm using another account to log into my ...
0
votes
0answers
28 views
Get number of processor ticks on Mac? [migrated]
How would I find:
The number of nice ticks
The number of user ticks
The number of idle ticks
The number of system ticks
I am on Mac OS X Snowleopard with an 2.4Ghz Intel Core 2 Duo processor. Is ...
0
votes
2answers
52 views
Is it possible to add an exception with a “ls -l *”
Is it possible to do for exemple: ls -l * which print the content of all a directory.
And add an exception, for exemple, test.cpp
In order to print all files except the test.cpp.
0
votes
1answer
38 views
How to launch Windows EXE from within Linux\UNIX host?
I have a Windows Application that now I got a request to be triggered from within Linux machine. This app is expected to run independently on Windows itself, regardless of sharing info with Linux or ...
0
votes
4answers
60 views
Does ln -s require you to be in a certain directory?
I want to create a simple symlink to a file.
It works perfectly if I run the command from inside the directory where I want the symlink to be created:
/path/to/link $ ln -s /path/to/file .
But if ...
2
votes
1answer
64 views
What to do if kill -9 doesn't work?
I've got a pesky process (in this case, a stranded process that was supposed to be running in iPhone Simulator (now long quit).
97442 ?? 0:00.00 (MyProcess)
I've tried everything I can ...
1
vote
2answers
48 views
Bash Script: Invalid argument
Why can't I use echo $1 > /sys/class/backlight/acpi_video0/brightness in a simple bash script?
It gives me the error: echo: write error: Invalid argument.
1
vote
3answers
38 views
Grep fail to ouptut to a pipe?
I'm having problems with grep filtering of make output. In particular,
make target 2>&1 | grep -E --color=never "^make.*"
works as expected, but the following will print no output to the ...
1
vote
1answer
30 views
Using a Linux/Unix terminal to copy many files to a new location
I'm trying to use the a Linux terminal to copy many files to a new location. I tired the command:
sudo locate -i *file_I_want* | xargs cp $1 /place_I_want_everything_copied_to/
Which, gives an ...
0
votes
1answer
30 views
How can you move (or copy) all files of a certain type to a directory in Unix?
I'm not very familiar with all the tricks of grep/find/awk/xargs quite yet, so be patient with me =]
I have a particular file type say *.xxx, in random places throughout a certain directory. How can ...
0
votes
2answers
52 views
How I can download this directory?
Is it possible to download this entire directory with wget? How I can do that?
This is the directory with the files that I want to download: ...
0
votes
0answers
23 views
Using rsync to synchronise folders without overwriting files of same name
I would like to synchronise the contents of two directories.
Without overwriting but to create a copy if two files have the same name, but different sizes
Without duplicating if two files have the ...
1
vote
3answers
50 views
Sudo segmentation fault in Terminal [closed]
Possible Duplicate:
Cannot do sudo: “/etc/sudoers is mode 0740, should be 0440”
sudo: /etc/sudoers is mode 0640, should be 0440
Segmentation fault
Any time I am trying to do ...
0
votes
1answer
42 views
How do I uninstall ctags on MacOSX?
I was messing around with vim, and every now and again my CPU goes to 100% running ctags. It's getting annoying, I can't figure out how to uninstall it. I've tried 'sudo port uninstall ctags' but that ...
0
votes
3answers
33 views
Crontab deleted?
Instead of typing "crontab -e" I accidentally typed "crontab" and was stuck in the middle of a process so I aborted the process. Now when I go to crontab -e it's entirely blank. This isn't good at ...
0
votes
2answers
43 views
How to find and stop a process on a Mac
How can I find the process id and stop the process that is running on port 8080 on a Mac?
On Ubuntu this works:
ps -aux
and I can find the process and run:
kill -9 pid
ps -aux didn't seem to ...
0
votes
1answer
15 views
I can not find specific cron running at *:21 and *:56 on Debian
I am frustrated. I have two mystic crons running on our server, that I can not find by doing crontab -l. The good thing is these crons are sending mails. That is how I know those are running at :21m ...
0
votes
1answer
51 views
Get the most common appearing lines from file in Linux
I have a text file that has various words per line.
How can I find the 12 most frequent appearing lines in the file and display them?
I am not very good with scripting commands.
If I could get the ...
2
votes
3answers
77 views
Login with SSH user that has no password set
I have a user without a password set (i.e. passwd -d).
I would not like to use public keys on this setup.
Is there a way to SSH login to such a user?
0
votes
0answers
17 views
L2TP over IPSec on Debian [migrated]
I've configured the IPSec and XL2TPd daemons properly, both boot fine. At the moment, the issue I'm having is I get this message.
ipsec_setup: multiple ip addresses, using 127.0.0.2 on venet0
...
2
votes
0answers
49 views
Getting rid of a GPT signature without touching MBR [closed]
Possible Duplicate:
GParted errors on MBR Disk, Claims it's GPT. (It's mistaken, but why?)
I have a disk that seems to contain both an MBR and a GPT. When trying to access the ...
1
vote
1answer
43 views
What does directory permission 02777 do?
Found the following PHP code today:
mkdir($directory, 02777);
chmod($directory, 02777);
I understand the PHP, but not first part of those numbers. The 777 part is clear, and if I have understood ...
2
votes
0answers
55 views
Child processes remain after quitting screen
I'm seeing some strange screen behavior on OSX. When I quit screen, child processes are not killed.
$ screen
$ tail -f (or some long running process inside screen)
Then, I kill the current screen ...
2
votes
5answers
159 views
Best practices to alias the rm command and make it safer
Some time ago I erroneously deleted my home folder because I ran a rm -rf * on the wrong terminal, whose working directory was the home folder!
I wish I had an alias for the rm command, but it was ...
3
votes
3answers
84 views
Does rm -f follow symbolic links?
I have a directory like this:
$ ls -l
total 899166
drwxr-xr-x 12 me scicomp 324 Jan 24 13:47 data
-rw-r--r-- 1 me scicomp 84188 Jan 24 13:47 lod-thin-1.000000-0.010000-0.030000.rda
...
1
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1answer
16 views
How do I move a linked file on Unix?
I have a bunch of files in one directory and links to each one of those files in another directory. So ls -l looks something like this:
lrwxrwxrwx 1 rembol rembol 89 Jan 25 10:00 copyright.txt ...
2
votes
2answers
110 views
Ethernet port not showing up in ifconfig
I asked this question on ubuntuforums.org, but haven't gotten any responses.
I am new to Ubuntu, and am having trouble getting my onboard ethernet port working on a fresh install of Ubuntu 10.04 ...
1
vote
1answer
23 views
Create floppy disk image with FreeBSD
So I don't have a usb floppy drive for my laptop, but oddly enough, I find myself wishing I did now. I do have an old machine with a floppy drive running FreeBSD 8.2, so I thought I might just use it ...
1
vote
1answer
48 views
How to create snapshots of your server for backup in Cent OS 5
I'm making the move from VPS to Dedicate server. Unfortunately, most dedicated servers do not provide server backups like managed VPS's do and I really like the piece of mind of having a backup of all ...
3
votes
7answers
175 views
unix - split a huge .gz file by line
I'm sure someone has had the below need, what is a quick way of splitting a huge .gz file by line? The underlying text file has 120million rows. I don't have enough disk space to gunzip the entire ...
1
vote
1answer
52 views
Sorting a checksums file by file name
I'm trying to sort the output of the md5sum program by file name, numerically (that is, file names all match log-\d+\.txt). I tried
sort -g "-t " -k 2 CHECKSUMS
but it sorts by checksum. Using
...
0
votes
0answers
12 views
Using psftp to copy files from unix to windows
I am currently trying to copy a file from a unix server to my local machine. I know you have to use the "get" command but after executing the command, the file is not showing up in my local directory. ...
-2
votes
0answers
35 views
What music generating software can be run server-side for live streaming? [closed]
My experiments with generative music require live feedback from listeners.
What would be the possible programming language or a software tool, preferably an Open Source, able to run on a *nix server, ...
3
votes
4answers
79 views
How to append a string to a file name in Bash Shell?
So I am supposed to find all the files in the given directory with surffix of .C or cc,
and change their name to .C.blah or .cc.blah
Is there a command to do that?
Or should I implement this with ...
1
vote
1answer
55 views
FreeBSD ee editor - can't type numbers
So I am using ee editor in FreeBSD 8.1 box. I cannot type numbers though. I open a file with:
ee file
I start writing letters which works fine but when I press a number on my keyboard (1, 2, 3 etc) ...
2
votes
2answers
43 views
Unable to “git stash pop” due to conflict
I have a local git repository and had several modified files. Then I needed to quickly produce a fix for something so I
stashed my changes (git stash)
edited file (vi file)
committed (git commit)
...
1
vote
3answers
37 views
Atomic application of unix patch
I have prepared a "patch" to my customer who will need to manually apply it to their code. If patch is applied partially due to conflicts then the whole procedure needs to be immediately reversed.
I ...
0
votes
2answers
66 views
egrep: CPU and memory usage
My Linux machine has 16 processors and free memory of 70 GB but when I run an egrep command, the command is using (checked through the top command) 100% of CPU and 0.5 of memory:
22391 aime 25 ...
-2
votes
2answers
91 views
Shell script error using command find
My script is supposed to: recursively look for files and directories whose names contain given strings, using find, starting in the current directory. If no arguments are given the message Missing ...
1
vote
1answer
21 views
Being 'nice' with I/O: limiting a processes I/O resources in *nix
I'm working on a big shared Ubuntu server and am annoying my colleagues. One of my processes is making a lot of inserts into a MySQL database and it's bogging the whole server down.
MySQL is not ...
0
votes
2answers
112 views
Unix - Directory not empty. Error -126: remote rmdir failed
I have the following directories on the root of my server
htdocs
[site contents]
mike-eng
stage
old2
stats
I am trying to delete the "mike-eng" directory here.
Permissions on "mike-eng" and ...
