0
votes
2answers
122 views

Gnu parallel & pipe

I want to send each line of a file to another program's stdin, e.g. input.txt line1 line2 line3 I want to use the gnu parallel like this (i.e. pipe each line as stdin to the more command) cat ...
0
votes
1answer
27 views

list all files with the same name in order of when they were modified

I have a directory, let's call it htdocs/live/. Many different directories are underneath this directory, each with a file commonFunctions.js living in the js directory. For example, here is the ...
-2
votes
1answer
2k views

Cannot find a valid baseurl for any repo in centos 6.4

when I want to install any repo I found this error Error: Cannot find a valid baseurl for repo: rpmfusion-free I'm using centos 6.4 I tried to check other packages I found the same error ... so ...
-1
votes
1answer
344 views

Automate git-pull, stuck with keychain

I'd like to create a cronjob to automatically run a git-pull every minute. The problem is that my repo is private, I had to create keys on my system (Ubuntu Server 12.04). I installed keychain and ...
12
votes
2answers
419 views

backslash at the beginning of a command

In Installing RVM manual I see a lot of lines starting with '\': Install RVM with ruby: $ \curl -L https://get.rvm.io | bash -s stable --ruby I'd think it is just mistype but they repeat ...
2
votes
1answer
107 views

How can I calculate the total size of an extremely large number of files with a particular extension?

I've got a directory in Linux that contains a large number of files (tens of thousands), plus directories that may contain thousands of files as well. At some point the following du command fails ...
3
votes
2answers
126 views

Rename a directory containing many files

I made a mistake in a rsync and all the files are copied long with its full path. All the files that I copied are at /var/www/photos/2012/1007/1007 Attempt 1 Now I would like to fix the paths, by ...
5
votes
2answers
219 views

Confusion over terminology SSH, Shell, Terminal, Command Prompt and Telnet

I don't usually use SSH if I can get away with it, but if I have to I do of course, and I've seemingly done this for years while still managing to remain slightly confused about these different terms ...
0
votes
1answer
237 views

Whats the output format of “df -ki” in AIX?

I just wanna know the output format (the order of columns) when running the command df -ki in an AIX system. I dont have access to an AIX system , and since it doesnt run on x86 machines , i cant try ...
3
votes
1answer
4k views

Command: move all files inside a directory to another directory (including hidden files)?

I tried to move all files inside a directory to another directory like this: $ mv /directory_one/* /directory However, the hidden files (such as .htaccess) in /directory_one won't be moved. What ...
2
votes
1answer
2k views

tar Exiting with failure…?

i'm untaring with this command tar -pxvzf filename.tar.gz an everything seems to be going fine but, it unexpectedly exits with the error below. Is there a reason why I'm receive this error and / or ...
1
vote
2answers
414 views

How to untar a single file from an archive with randomly generated directory names?

I'm trying write a script that will download a tarball from github and extract a single file from it. However the top level directory inside the tarball has some random characters in it, which I ...
3
votes
3answers
264 views

Multiple SSH sessions in a single command

I'm trying to copy a database from one server to another. I tried using the following command and it's getting tied up on entering the ssh passwords. If I put in one server's password, it complains ...
2
votes
1answer
233 views

What does the leading dash in process cmdline mean?

I noticed a process taking full CPU on my linux server, of which the COMMAND column from top -c is -bash. cat /proc/<pid>/cmdline shows -bash too. What does the leading dash mean? More info: ...
0
votes
2answers
354 views

linux add python script to run as user

I have a Python script that is executed through PHP but the script runs under the user ubuntu. How do I change my Python script to run as the same user as my PHP script which is www-data? If this is ...
0
votes
2answers
71 views

Search and sync files from remote systems

I have a folderA remotely which has 2 subfolders folderB and folderC.I have to search for my file where it is located in the 2 subfolders(folderB and folderC) and should copy it. Is it possible with ...
1
vote
1answer
366 views

Synchronization of a directory in 2 systems using rsync

I am using rsync to copy the delta difference between the 2 systems. I want to use it in such a way it "synchronizes" the both systems based on the timestamps. I mean to say if suppose I do rsync ...
0
votes
1answer
52 views

Is there anyway to know from what console is an user logged?

Is there anyway to know from what console is an user logged ? with the who command gives me: NAME LINE TIME COMMENT atomsfat pts/0 2011-08-02 08:52 (172.206.24.244) ...
0
votes
4answers
254 views

Removing old cache files - command help

I'm trying to write a command to help clear up old cache asset files. The files are always either .css,.javascript,.css.gzip or .javascript.gzip and i want to delete all files older than 2 days old. ...
0
votes
2answers
166 views

Reset shell margins or output?

I have two problems, in both cases the problem usually occurs when I resize my terminal client xterm. When ssh'd into a server all the output from commands doesn't scroll. It doesn't happen right ...
2
votes
4answers
1k views

Copy files from sub directories into one directory

Ok I have a bunch of files in this file structure format. /backup/daily/database1/database1-2011-01-01.sql /backup/daily/database1/database1-2011-01-02.sql ...
2
votes
2answers
249 views

Please explain this BASH code (one line)

Never seen this used before in BASH: pidfile=${PIDFILE-/var/run/service.pid} The part I've never seen/used before is the ${PIDFILE- part.
1
vote
4answers
612 views

How to check / start a process | error in shell script

If want to check if a process is running and start it if not. My script below is buggy and always says that a process is running. What is wrong? $ ./check_n_run thisisnotrunning ./check_n_run: ...
4
votes
5answers
242 views

Remove a file with <Down> in the name?

So, on a CentOS box, I accidentally executed :w<Down> in a vim editor, with "<Down>" being literally pressing the down arrow key on the keyboard (rendered onscreen as "<Down>"), and ...
0
votes
3answers
424 views

Use of hyphen in shell command

I feel shy to ask this question, but if I don't I will never know, so here I am giving it a shot: I notice most shell commands use "-" for options, but I also noticed some commands do not have it. ...
1
vote
2answers
765 views

Control Key for Home & End on Command-line in Terminal on Mac OS X

What are the control keys to move the cursor to the beginning and end of the command-line? The Home and End keys don't work in Terminal on Mac OS X.
10
votes
7answers
520 views

Why is this file hidden when you run ls?

EDIT: I totally forgot about this thread. It turns out I had a bad hard disk. We had to redeploy this server for other needs so I finally got around to replacing the one bad disk and we're back in ...
4
votes
2answers
1k views

crontab - run immediately?

I have a bunch of cron jobs which run every 30mins. I'm currently doing some testing, and instead of setting the cron jobs to run every minute, is there a command which I can execute that'll run the ...
3
votes
1answer
461 views

Can i call pushd/popd and prevent it printing the stack?

After calling pushd/popd in bash, it will print off the current directory stack. Is there any way to prevent this behaviour, so that it will act 'quitely'? This sort of noise in a command is uncommon ...
1
vote
4answers
1k views

Make ls print it all on one line (like in terminal)

ls prints differently depending on whether the output is to a terminal or to something else. e.g.: $ ls . file1 file2 $ ls . | head file1 file2 Is there some way to make ls print out on one line ...
1
vote
2answers
2k views

Updating a file in a zip archive from STDIN

I want to update/freshen a file in a zip archive with the contents of stdin. So far I haven't been able to find a way to tell the zip command that the contents of stdin correspond to a particular ...
3
votes
3answers
6k views

how to undo move file in linux?

I made a mistake when moving a set of file by this command mv src/* .. instead of mv src/* .
2
votes
2answers
145 views

SED Find&Replace with “OR”

After a bit of googling / research on my own i haven't found a definitive answer, I'm looking to search the entire /var/www/html/ folder for occurances of "127.0.0.1" and replace them with a server ...
0
votes
3answers
2k views

CentOS 5 Start a PHP Script on startup

We have a CentOS 5 VPS over at slicehost. I have a couple of PHP scripts that operate email and stuff. I need a way to start these php scripts automatically on machine's reboots/startups and have ...
1
vote
9answers
8k views

How to run a .sh file in Red Hat?

when I tried to run my .sh file in Redhat using ./test.sh I am getting a error like [test@tester unix_scripts]$ ./test.sh : No such file or directory [test@tester unix_scripts]$ I have also set ...
33
votes
1answer
6k views

What is the difference between a 'Login' and an 'Interactive' bash shell

What is the difference between a ‘Login’ and an ‘Interactive’ bash shell? I have quoted Wikipedia below but can anybody give a better answer? EDIT: This is a community wiki so maybe rather than ...