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64
votes
5answers
25k views

In bash, how do I escape an exclamation mark?

I want to do something like bzr commit -m "It works!". I can sort of escape the exclamation mark by doing bzr commit -m "It works\!". However, then my commit message includes the backslash. How do I ...
32
votes
4answers
2k views

In a URL, what is // for? [closed]

Typically, when I see //, it's usualy following some protocol prefix like http: or ftp:. I have never seen it placed anywhere else. For example, http://www.google.com/ is a typical URL. However, ...
10
votes
1answer
6k views

Custom gedit Syntax Highlighting for Dummies?

I want to make (have, actually) a custom syntax highlighting for gedit. There would be just a few different items: A line that begins with 2 tabs. ----- One color. A line that begins with 3 tabs. ...
9
votes
3answers
4k views

How to read Unix usage

I did some searching, but I cannot find documentation on how Unix usage works. I know something (mostly through trial and error) but, for example, how do I know that /usr/bin/ls ...
9
votes
5answers
4k views

How is \$ being interpreted by grep?

When I write $ grep \$ then whatever I type on terminal, is matched and printed on terminal. How is \$ being interpreted?
5
votes
4answers
4k views

Explanation of command to uppercase the first letter of a filename

I'm trying to learn to rename files with the command line, and after browsing around a lot of pages I finally found a command that uppercases the first letter of a file, but the problem is that I want ...
5
votes
2answers
3k views

Syntax for find on Mac OS X

I have a project directory that contains source code and subdirectories of source code. I want to use the Unix program find to search recursively for the names of files of certain extensions. The ...
5
votes
2answers
5k views

How to 'code collapse' wiki syntax on Notepad++ (or any other text editor)?

I'm familiar with Notepad++'s code collapse for certain programming languages but recently I've been working with a plain text file that uses with Wiki syntax. For example: ==Heading1== Content ...
4
votes
5answers
302 views

How do I pipe a list of numbers straight from the shell into a command?

How do I pipe a list of numbers straight from the shell into a command? For exampe something like this [1,2,3,4] | sort would give 1 2 3 4 EDIT: In response to the answers kindly posted so ...
4
votes
1answer
3k views

How to grep a line start with “*” using grep

How can I use 'grep' to get lines start with '* ' in my file? I tried grep "*" myfile and grep "* " myfile but returns all the lines of my file.
4
votes
2answers
2k views

Vim: What do these short names / verbs like <leader>, <C-r> mean?

I'm using Vim for a while now, starting to like it more and more. But when searching for some new features that Vim has in it's goodie bag, I'm often slapped in the face with things like ...
4
votes
3answers
2k views

how do I use tar -C on Snow Leopard when creating an archive?

The man page states -C directory In c and r mode, this changes the directory before adding the following files. However, tar does not change to the directory I specify, but instead reports ...
4
votes
1answer
3k views

Program for creating language syntax/grammar “railroad” diagrams?

I'm looking for the program that JSON, SQLite and other projects are using to create the diagrams used for their language syntax, if there is a particular program. All of the diagrams have a similar ...
4
votes
1answer
3k views

crontab day of week vs. day of month?

I added this to /etc/crontab on a few different linux & freebsd systems: # monthly reboot: 3rd Tuesday of every month 56 07 15-21 * 2 root /sbin/shutdown -r now I want a reboot on the 3rd ...
3
votes
2answers
8k views

How can I sort ls by owner and group?

How can I list directories with ls and sort them by their owner and group?
3
votes
2answers
749 views

What bash < < syntax mean?

Ruby Version Manager (RVM) installed like so: bash -s stable < <(curl -s https://raw.github.com/wayneeseguin/rvm/master/binscripts/rvm-installer) I understand what first < mean (feeds bash ...
3
votes
10answers
427 views

“Syntax” Highlight a flatfile

I've googled and looked and explored, but it seems most editors configurable syntax highlighting definitions are based on keywords and such. I need one that is based on columns and lines, basically ...
3
votes
3answers
507 views

Launch VIM and show, or hide, row numbers

Background Control whether row numbers are displayed after vim starts (in a non-interactive mode). Problem A shell script contains the following code: echo Converting $1 to $1.html... NUMBERS="-c ...
3
votes
1answer
72 views

What does this crontab line do?

What does this crontab entry do? I'm thinking it means run the jobs.sh script every Monday at 11AM. Is this correct? 0 11 * * MON /home/username/jobs.sh
3
votes
1answer
3k views

Matching a number sequence in grep

So I'm trying to match a year number sequence with grep and this should be easy. I'm just a bit stumped that my simplistic regex isn't working. What I'm doing is running a tool which archives some ...
3
votes
1answer
964 views

Fix YAML syntax highlighting in VIM

The YAML syntax highlighting in Vim 7.3 isn't great. Putting an apostrophe in a line of text triggers quote highlighting even when there's no quote. The same thing happens in other files sometimes ...
3
votes
3answers
3k views

Checkbox in Mediawiki syntax?

Is there a way to insert an HTML checkbox in Mediawiki syntax? <input> doesn't appear on their list of blessed tags, so I can't just insert it. (FWIW, this is for a private documentation page ...
3
votes
1answer
751 views

How to set the default language in Notepad++ for Rails View files

Similar question to this but my question goes a step further. I'm developing in rails and would like Notepad++ to automatically use html formatting on files with the extension html.erb. For example ...
2
votes
2answers
317 views

What is the difference between echo $BASH_VERSION and echo ${BASH_VERSION}?

I see a lot of ${VARIABLE} type syntax in scripts. What is the point of the braces?
2
votes
2answers
12k views

copy file to multiple folders via batch script

I want to copy a file (file.txt) inside all folders of a given destination. I want to create a batch file that does the job, but I'm not so skilled in Windows batch syntax.
2
votes
2answers
2k views

How to set syntax specific settings in my VIMRC?

I work with several languages and markups in vim every day (ruby, python, javascript, CSS, HTML, etc), and would like to have different settings for each buffer when I fire up my editor. How can I ...
2
votes
1answer
504 views

HTML - Historical or technical reason for target=“_blank” with underscore?

Until today I am wondering why target="_blank" has not become target="blank". I am sure the browsers could understand this as well. Are there any historcal or technical reasons for this decision / ...
2
votes
2answers
651 views

cat “input file is output file” while trying to combine multiple files into one

The plan was to collect all source lines of Java into one file, recursively: $ find . -name '*.java' | xargs cat >> all.java But there was an error: cat: ./all.java: input file is output ...
2
votes
2answers
105 views

Make emacs show comments after } else {

This is best described on an example. Let's say you have the following C source file: if (something is true) { meh(); } else if (something else is true) { foo(); } else { // something even ...
2
votes
1answer
3k views

How can I see the available Windows Search Filters?

I've often wondered how to use Windows Search Filters. The available documentation is extremely limited, but its potential uses are quite large. When I type something, the only search filters I see ...
2
votes
1answer
222 views

emacs auto-complete behavior with underscores in python mode

In my .emacs I have the following line of code: (modify-syntax-entry ?_ "." python-mode-syntax-table) This is so that commands like forward-word and backward-kill-word stop at any underscores that ...
2
votes
2answers
152 views

How does calling a program in Windows XP from “Run…” with a colon argument work?

I noticed that a certain program works in a special way when sending an argument. The only way to send an argument is by clicking "Start -> Run..." and typing: [programname]:[argument] for e.g ...
2
votes
0answers
47 views

Extractor Information program by detecting syntactic patterns

I wonder if there is a program that helps you automatically extract information by setting syntactic patterns and save it in a base data.
2
votes
1answer
1k views

Automating Disk Cleanup on Windows using commandline

I am trying to run Disk Cleanup in the Command Prompt (and through a C# program) and so I went through all the available options from this link: http://support.microsoft.com/kb/315246 Whilst I ...
1
vote
3answers
1k views

What is the meaning of pri=42

When mounting a swap partition on Linux, what does the mount option pri=42 mean? fstab: /dev/hda1 swap swap pri=42 0 0
1
vote
3answers
445 views

Ubuntu Crontab error

I want to list files at 12h01. How can I set my crontab to do this? pedro@Pedro-PC:~/PL/trab4$ crontab -l # 01 12 * * * ls -l
1
vote
1answer
171 views

Vim syntax highlighting lost on single file

I have a strange thing happening on a single file. When I open the file under it's original name, the highlighting is lost (":syntax on" does nothing). But if I cp that file with another name and open ...
1
vote
2answers
1k views

What about this Forfiles command syntax is wrong?

I was attempting to issue the following FORFILES command, and I recieved an error that distressed me (listed after the command). C:\Windows\system32>FORFILES /P %WINDIR%\servicing\Packages ...
1
vote
1answer
217 views

wget ftp with credentials for a list of files

This SuperUser question isn't quite what I need. Is there a way to do something like this wget ftp://myname:longpassword@someipddress/images/ -i file_list.txt I want to use the same credentials and ...
1
vote
1answer
614 views

Commenting Highlighted code in Netbeans

Using the latest version of Netbeans and trying to use the toggle comment button to comment out only the highlighted text, but netbeans ends up commenting out the entire line of CSS code. Is there ...
1
vote
1answer
102 views

Vim region with keywords in syntax patterns

I need to create a custom vim region with determines classes and structs. The code, for example, syn region myCxxClass start="\(class\|struct\)\_[ \t]\+" end="}[^;]*;" transparent The patterns for ...
1
vote
2answers
151 views

Change only the user of a file

I have a textfile with name negin.txt in /home and did the following: Right click → Properties → Permissions → Advanced Permissions → Add Entry → Named User user:wwwrun Is ...
0
votes
1answer
109 views

Bash delete file when variable = x

I'm creating a bash script which reboots the system at each reboot it adds a new line to a text file, I then read the text file before each reboot. Once the variable holding the number of lines ...
0
votes
1answer
180 views

Syntax to create a file list

When I try to create a list of the files on a CD and to save it as a text file, something must be wrong with my syntax. Entering the command: gz@gcomputer:/media$ ls -aRl1 >> ...
0
votes
1answer
42 views

What causes a link to not go through after a user clicks on it?

I'm using Firefox in OS X on a MacBook. Lately, I've tried clicking some links on the Yahoo main page only to be redirected to a blank white page that says "Bad Syntax". Is this the link or the ...
0
votes
2answers
1k views

.bashrc reports unexpected EOF

I am trying to add some functions to my bashrc, namely: h () { history | fgrep $1 | sort -u | cut -b 8- } extract () { if [ -f $1 ] ; then case $1 in *.tar.bz2) tar xvjf $1 ;; ...
0
votes
2answers
424 views

Print the file name with another extension (Batch-program)

Batch-program launchs with 1 parameter (full path to file) program.cmd "C:\Path\To\File\Filename.txt" Now, this program consists of 1 command: echo %1 And it just prints an argument: ...
0
votes
1answer
3k views

Rotate screen using xrandr on Solaris 10

How do I call the xrandr command? I want to rotate my screen 90 deg. clockwise. Here is the usage: % xrandr -help usage: xrandr [options] where options are: -display <display> or -d ...
0
votes
1answer
969 views

Syntax highlighting for sql files on sublime text

I want to install syntax highlighting in my sublime text program for those extensions : .plpgsql .sql .plsql Somebody know how to do it ? I have installed some packages but there was no results. ...
0
votes
1answer
22 views

VIM - in colorscheme file, how to have different colours depending on what the syntax is?

I use VIM and I want I use my own customized slate colorscheme (slate-mine.vim). In slate-mine.vim, is there a way for me to do something like if syntax == django html then apply the following ...