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

learn more… | top users | synonyms (1)

20
votes
5answers
23k views

How can I get a formatted date for a UNIX timestamp from the command line

I have a UNIX timestamp and I'd like to get a formatted date (like the output of date) corresponding to that timestamp. My attempts so far: $ date +%s 1282367908 $ date -d 1282367908 date: invalid ...
35
votes
4answers
13k views

Can't pipe into diff?

I wanted to be clever and compare a remote file to a local file without downloading it. I can get the contents of the remote file by ssh user@remote-host "cat path/file.name" However, piping that ...
13
votes
2answers
3k views

Is there a way to intercept interprocess communication in Unix/Linux?

For intercepting/analyzing network traffic, we have a utility called Wireshark. Do we have a similar utility for intercepting all the interprocess communication between any two processes in ...
31
votes
7answers
92k views

Is there a way to see details of all the threads that a process has in Linux?

For Windows, I think Process Explorer shows you all the threads under a process. Is there a similar command line utility for Linux that can show me details about all the threads a particular process ...
8
votes
4answers
3k views

How to best encrypt and decrypt a directory via the command line or script?

I have a directory of text files under bazaar version control and keep a copy (a branch, actually) on each of my machines. I want to encrypt and unencrypt the directory via the command line. Ideally, ...
9
votes
1answer
1k views

How do I get a long listing for a single directory?

I want to see a long listing for a single directory. When I type ls -lha, I see this: drwxrwxr-x 4 username groupname 4.0K 2010-08-05 09:55 files drwxrwxr-x 7 username groupname 4.0K 2010-08-05 ...
12
votes
4answers
539 views

rolling diffs for storage of highly similar files?

At work we do a nightly dump of our mysql databases. From day to day, I would guestimate that close to 90-95% of the data is duplicate, increasing as time goes on. ( Heck at this point some are ...
22
votes
4answers
31k views

How do I make multiple directories at once in a directory?

I know with mkdir I can do mkdir A B C D E F to create each directory. How do I create directories A-Z or 1-100 with out typing in each letter or number?
7
votes
2answers
2k views

How to merge patches

Sometimes I need to merge two patches. I can apply them but often it is not convenient (coping, temporary files etc.). Is there a tool to merge patches (assuming they are not conflicting)?
24
votes
7answers
10k views

Isn't less just more?

When I do more filename and less filename, it would seem that the resulting terminals are quite similar. I can navigate and search through my files identically (j, Space, /pattern, etc.). I find it ...
3
votes
1answer
702 views

Using URLs with parenthesis with Lynx

I often use Lynx on a remote computer to look at websites (faster than port-forwarding). Sometimes the URLs I want to go to have un-escaped characters (for example brackets) that Lynx seems to need ...
5
votes
4answers
4k views

How to have separate command history for different sessions for the same user?

I face this issue on some of Unix servers. When I open different session for same user, command history is shared by all the session. This creates issues if by mistake I press Ctrl-P or up arrow and ...
111
votes
7answers
66k views

Keep SSH Sessions running after disconnection

I sometimes have long running processes that I want to kick off before going home, so I create a SSH session to the server to start the process, but then I want to close my laptop and go home and ...
5
votes
3answers
562 views

Any tips for surviving Terminal.app?

I've recently switched to using a Mac full-time, and am having trouble getting used to Terminal.app after years of loving gnome-terminal. I miss having URLs show up underlined, using alt+arrow to ...
7
votes
2answers
2k views

How to remove Ctrl-M from files where dos2unix, perl, tr, and sed are not present?

Suppose you are working on a very old unix server where dos2unix, perl, tr, and sed are not present. How can you convert files from dos to unix format?
12
votes
5answers
2k views

Using text from previous commands' output

EDIT April, 2015: If you have this same question I recommend also checking http://xiki.org/ I know this is not how terminals work, but I find myself often wishing there was an easy way of using ...
9
votes
10answers
2k views

Development environment for C

Looking for ideas on setting up a convenient and productive development environment for C development. I found C editing with Vim very helpful but I would like to get a wider sampling of suggestions.
9
votes
6answers
2k views

Best way run a command on each file in a directory tree

There appear be a number of ways to do this including loops in shell script, find and xargs. Which of these is best, and which is most portable?
7
votes
2answers
2k views

Viewing foreground process using ps

I can see the background process using ps. But Is there a way to view the foreground process? For example, $nohup process1 & then ps -ef | grep "process1" would display the process ...
13
votes
2answers
4k views

How to invoke an Openoffice macro from the Linux command line

I have an OpenOfice macro that I want to use to process the contents of an OpenOffice file. I am able to do this by opening the file with OpenOffice and then running the macro. How do I invoke the ...
5
votes
1answer
373 views

Example value for a nautilus (file manager) connect to service custom location

I am looking for an example for a nautilus (file manager) connect to service custom location. $ nautilus Activate connection editor: File>Connect To Server...> I am looking for an example ...
221
votes
23answers
158k views

Repeat a Unix command every x seconds forever

There's a built-in Unix command repeat whose first argument is the number of times to repeat a command, where the command (with any arguments) is specified by the remaining arguments to repeat. For ...
200
votes
32answers
146k views

Tracking down where disk space has gone on Linux?

When administering Linux systems I often find myself struggling to track down the culprit after a partition goes full. I normally use du / | sort -nr but on a large filesystem this takes a long time ...