The command-line is the interactive interface to your shell.

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6
votes
2answers
3k views

What is “Print to File” and can it be used from command line?

When you select "Print to File" in a Gnome print dialog (not cups-pdf): ... what is the actual command that gets executed? (I'm interested in the postscript variant, as on the image) On the other ...
2
votes
2answers
838 views

what does Curl's stand-alone hyphen (-) mean?

what's the stand-alone hyphen (between the -C & -O) stand for in this command? curl -C - -O http://www.intersil.com/content/dam/Intersil/documents/fn67/fn6742.pdf FWIW- I'm following a ...
3
votes
1answer
2k views

Command line utility to read vCalendar files

I use alpine to read mails, and occasionally get emails from people with vCalendar files in attachment. Is there a command line utility that reads and displays vCalendar files?
4
votes
2answers
735 views

Running two animations side-by-side using ImageMagick

I have two animations (.gif files) I want to run side-by-side. Can this be done with ImageMagick? Moreover, I want to start one of the gifs after thirty frames of the other have passed. Can this be ...
3
votes
1answer
2k views

Move position of an application window from the command line on OSX

An application — iA Writer — somehow got stuck off screen with only the corner showing. I can't grab it or use other means to move it from that position. All new windows open in that position, ...
2
votes
1answer
294 views

Replace “<?php print t('Blabla'); ?>” to be “Blabla”

Lets say in file.php, there is lots of php print text: <?php print t('Blabla'); ?>, <?php print t('Text Here'); ?>, etc. What I need is to remove <?php print t(' and '); ?> of the ...
2
votes
2answers
11k views

How to fix non-responsive Ubuntu system?

I use Ubuntu. Sometimes, the system does not have any response with mouse and keyboard. Is there any way to solve this problem except hitting the reset button on the machine?
10
votes
1answer
4k views

Best way to continue stopped move (mv) by merging directories?

I have moved (mv) a pretty large directory on my NAS (Linux based), but had to interrupt the procedure. Not being a regular Linux user, I though I could just continue and merge the rest later in. mv ...
3
votes
5answers
4k views

Execute on the basename of a find command

Suppose I have a directory structure as follows test test/a test/b Now I want to execute a command, such that in the . folder I can execute a command on the basename of the files a and b. So ...
0
votes
2answers
8k views

Difference between ifconfig and ipconfig? [closed]

What is the difference between ifconfig and ipconfig? What do dhcpcd and ifconfig actually do?
2
votes
1answer
488 views

Setting up clearcase view through nautilus file manager

On my workplace, in order to access certain folder on the server, say /x/y, I need to set up a clearcase view using the cleartool command. (I don't have much idea about clearcase or cleartool). Only ...
0
votes
1answer
417 views

Redirecting output of program reading from stdin

When I want to redirect an output of a.out program I will use ./a.out > output.txt This doesn't work when the program reads something from stdin. How would you redirect output in this case? I ...
11
votes
4answers
421 views

In bash, what are potential negative consequences of pausing a process with control-z?

Using bash, one can pause a process with control-z. However, are there any general circumstances or guidelines to beware of where a process would not behave well with being paused? My specific ...
3
votes
2answers
1k views

Chkconfig on Linux Mint 12 giving tons of errors

I'm trying to disable some services from starting at boot time on my Linux Mint 12 laptop. So I installed chkconfig, which has worked great for me before on Fedora. However, on Linux Mint 12, it gives ...
10
votes
4answers
8k views

'mv' equivalent of drag and drop with replace?

In a GUI environment, a drag-and-drop with replace will replace files and entire directories (including contents) with whatever is being copied in. Is there a way to accomplish this same intuitive ...
7
votes
2answers
6k views

command line tool to remove selected tags from mp3 files

Using MP3 Diags to clean up my mp3 collection, I've discovered that in addition to the ID3v2 tag, some files also have a Lyrics3, ID3v1, and some an APE tag. Are there command line tools out there to ...
11
votes
4answers
4k views

Command-line password manager that uses SSH key to authenticate

I'm looking for a command-line password manager, much like pwsafe, but one that features SSH key authentication. That is, I'd like to be able to add my SSH key to the authentication when opening the ...
1
vote
1answer
5k views

Is there a command line utility that copy files with progress information? [duplicate]

Possible Duplicate: move files with progress bar cp gets the job done but it would be nice if it had a little more feedback. Are there any utilities out there that do this? Personally, my ...
0
votes
1answer
335 views

Run a script after some command were executed

I have a list of scripts ./myscript <param> | grep "asd" ./myotherscript <param> <param> > file ... How can I automaticaly run another script when one of these command in the ...
5
votes
2answers
2k views

Is there any command-line, generic HTTP proxy (like Squid)?

I can easily use Netcat (or, Socat) to capture traffic between my browser and a specific host:port. But for Linux, does there exist any command-line counterpart of a Squid-like HTTP proxy that I can ...
1
vote
1answer
1k views

How to open a local URL (webpage) on the command line

On MacOS X I can run open /some/path/index.html and this would open the page index.html with the default software that handles .html files. Is there something similar on Ubuntu Linux? I have used ...
2
votes
2answers
662 views

How to change a firefox option on a quick way (via shortcuts, command line,..)?

In Firefox we have two options at Firefox->Preferences->Preferences->Fonts and colors->Colors menu, Use system colors and Sites can use other colors. I would like keep the first one ...
2
votes
1answer
186 views

Illustrate the difference of two squares via the command line

So, after 10 years of wanting to study the book that Ramanujan relied upon for a lot of his early strides in mathematics, it's 2012, and the book is finally online. To celebrate, I want to go through ...
3
votes
2answers
2k views

Passing a bash command-line argument containing a dot

How can a command-line argument containing a dot (.) be passed? Are there any escape sequences for capturing characters like dot? The following invocation of a bash-script from the shell does not ...
8
votes
2answers
2k views

Aliases and tmux

Aliases defined in .bash_aliases and .bashrc don't work in tmux. Can this be changed in some configuration, so the aliases work under tmux?
3
votes
1answer
812 views

Searching a file & excluding lines with a specified string

I have a large log file that contains numerous lines of the same entry, lets call it "repeat-info". As an example here is what a portion of the log might look like: [Timestamp] repeat-info ...
13
votes
4answers
2k views

Best method to collect a random sample from a collection of files

Suppose there is a directory holding 300 data files. I want to randomly select 200 of those files and move them into another directory. Is there a way to do that under Unix/Linux?
4
votes
3answers
498 views

Does bash have a built in caching command available (sort of like mktemp or sponge)?

I'm using the amazon ec2 command line tools, and the ec2-describe-instances tool is a little painful because of the 2-5 seconds it requires to make the request and display the output. I'm looking ...
2
votes
2answers
6k views

Batch copying/moving files in unix?

Is there a way to batch copy/move files in unix? I thought it might be an option for cp/mv but I can't find any way to do it.
3
votes
3answers
2k views

Removing apostrophe from all file names

I tried to remove apostrophe from all files' names in the directory. for i in *; do mv $i `echo $i | tr -d "'"`; done After executing this command nothing is renamed. Do you know what's wrong ...
3
votes
3answers
412 views

Regarding separate a single file into multiple files according to line separation

Currently, I have a plain text file, A, such as lowest priority very high significance. outstanding very novel In this file, every line contains a sentence. I want to separate this file into ...
1
vote
1answer
678 views

How to change the default line length for od and hexdump

Is there any way to change the default line length for the od and hexdump commands? Can't see anything apropriate in the man pages.
3
votes
1answer
6k views

How to get exact file size and file name?

Right now I am using ls -lt /my/directory (see below) then php parses the output. But inconsistently because the delimiter is space and there might be two or more spaces in between two fields. The ...
14
votes
2answers
742 views

What is a simple way to schedule a single event to happen at some time in the future?

There are often times that I want my computer to do a single task, but not right now. For example, I could have it notify me in 30 minutes that it is time to leave work. Or maybe I want it to run a ...
11
votes
3answers
603 views

Order of redirections

I don't quite understand how the computer reads this command. cat file1 file2 1> file.txt 2>&1 If I understand, 2>&1 simply redirect Standard Error to Standard Output. By that ...
1
vote
1answer
1k views

How to format a curl command for a special task?

There is a search page in a form http://site.com/search.php and it sends a search query via POST request. I want to fetch this request via curl command line tool to inspect a POST request. The HTML ...
5
votes
3answers
12k views

Recursive grep for words in a particular file type

I wanted a command line command to search all shell scripts in the filesystem for a particular word, so I asked around at work and got the following solutions: grep word `find / -name \*.sh ...
29
votes
12answers
44k views

Efficiently delete large directory containing thousands of files

We have an issue with a folder becoming unwieldy with hundreds of thousands of tiny files. There are so many files that performing rm -rf returns an error and instead what we need to do is something ...
1
vote
4answers
2k views

Renaming files works, but soft links point to the old names. How can I fix that?

For example, I'm renaming many files inside a tree like this: [bash]$ for file in `find . -name "*gsf*"`; do `mv $file ${file/gsf/msf}`; done That renames all the instances of "gsf" in file names ...
10
votes
3answers
9k views

Refresh/reload active browser tab from command line?

I'm trying to set up a custom toolchain where the browser (Firefox or, preferrably, Chrome) is often/frequently/constantly forced to refresh from the commandline. (The idea is to instantly see the ...
5
votes
2answers
2k views

How do I create a ZIP archive that preserves only the structure of the target directory and below?

I need to create a zip archive where the unzipped result preserves the directory structure from the specified directory down. I also need to do this without actually switching to the directory. My ...
1
vote
1answer
1k views

What does @ sign mean in 'ls' output on Mac OSX Lion terminal? [duplicate]

Possible Duplicate: what does the @ mean in ls -l? What does the @ sign mean in the following "ls" output? -rw-r--r--@ 1 root wheel 489 Jan 4 13:14 boot.plist
46
votes
5answers
2k views

cd by just typing the directory's name?

I either had this somewhere 20 years ago or I dreamed about it. Basically: If if type blobblob I get blobblob: command not found Fair enough. I would like it so that when my shell gets those ...
2
votes
2answers
882 views

How to display server's TLS certicicate details in terminal?

Having TLS certificate in local file, I can display its details using syntax like: openssl x509 -text -noout -in cert_filename Is there any way to display remote SMTP/POP3/HTTP server's TLS ...
3
votes
3answers
641 views

Unique file name for different files

I'm working with graphic design. I've downloaded many files (EPS files, PSD files, etc) from various websites. Because it come from various websites, after downloaded from more than 10 different ...
4
votes
3answers
1k views

command line audio with mpg123 - how to save position in audio and begin from that location next time?

I am contemplating using mpg123 as an audiobook player. I can't find any other good audiobook players for Linux, and I think mpg123 may be my best option. My audiobooks are organized by directories ...
1
vote
1answer
28 views

How reliable of using “nameofmychoice=”anyname“”

For backup MySQL MyISAM database, I'm using: backupdb=siteone mysqldump -u root -pthepass --lock-tables --add-locks --disable-keys --skip-extended-insert --quick $backupdb > /var/www/html/db2.sql ...
2
votes
2answers
2k views

regex replace text in xml file within node from the command line

I have an XML file and I would like to replace everything that is between the open and closing tag within multiple instances of the g:gtin node with nothing. Is this possible from the command line, ...
1
vote
1answer
2k views

Sending HTML with Mutt (or another terminal mail client)

While I can find some scattered info on the topic, I can't seem to find a straight walkthrough (or even a definite answer)... Basically I'm too low on the totem pole to start sending plain-text ...
1
vote
1answer
381 views

Unable to kill sar process

I have a shell script to run JMeter test. Script generates the Jmeter log out put and creates sar (suppose to create sar file though it does not). Shell script is - runtest() { export ...