All commands (14,187)

  • Copy a file to a range of other files. Show Sample Output


    9
    for i in {1..5}; do cp test{,$i};done
    azeey · 2009-05-06 21:44:03 6

  • 4
    lsof -i | grep -i estab
    P17 · 2009-05-06 17:45:55 15
  • I have a bash alias for this command line and find it useful for searching C code for error messages. The -H tells grep to print the filename. you can omit the -i to match the case exactly or keep the -i for case-insensitive matching. This find command find all .c and .h files Show Sample Output


    33
    find . -name "*.[ch]" -exec grep -i -H "search pharse" {} \;
    bunedoggle · 2009-05-06 15:22:49 26
  • Aureport is a tool for displaying auditd system log. -x options cause to display launched executable on system. Aureport work with auditd so auditd must be installed an running on a system. Tested on CentOS / Debian Show Sample Output


    1
    aureport -x
    servermanaged · 2009-05-06 11:42:12 4
  • Please take notice that if you are going to use an JPG file for shadow effect, let change -background none to -background white! Because -background none make a transparent effect while JPG doesn't support transparent! And when viewing, you will get a bacl box! So we will use an white background under! We can use other color as well!


    7
    convert {$file_in} \( +clone -background black -shadow 60x5+10+10 \) +swap -background none -layers merge +repage {$file_out}
    kureikain · 2009-05-06 10:19:39 13
  • rotate: the rotate angle width, $height: width and height to scale to birghtness: change brighness


    4
    convert -rotate $rotate -scale $Widthx$Height -modulate $brightness -contrast $contrast -colorize $red%,$green%,$blue% $filter file_in.png file_out.png
    kureikain · 2009-05-06 10:14:22 4
  • The colors are defined as variables. e.g. RED="\[\033[01;31m\]" BLUE="\[\033[01;34m\]" Show Sample Output


    -3
    PS1="$BLUE[$CYAN\u$BLUE@$CYAN\h$WHITE-bash \v:$GREEN\w$BLUE]$WHITE \$ "
    P17 · 2009-05-06 08:01:06 6

  • 5
    ip route show dev ppp0 | awk '{ print $7 }'
    williamruckman · 2009-05-06 02:07:57 7
  • Runs an instance of screen with name of "name_me" and command of "echo "hi"" To reconnect to screen instance later use: screen -r name_me


    3
    screen -dmS "name_me" echo "hi"
    williamruckman · 2009-05-06 02:04:15 4
  • While I love gpg and truecrypt there's some times when you just want to edit a file and not worry about keys or having to deal needing extra software on hand. Thus, you can use vim's encrypted file format. For more info on vim's encrypted files visit: http://www.vim.org/htmldoc/editing.html#encryption Show Sample Output


    88
    vim -x <FILENAME>
    denzuko · 2009-05-05 23:24:17 28
  • This prints a summary of your referers from your logs as long as they occurred a certain number of times (in this case 500). The grep command excludes the terms, I add this in to remove results Im not interested in. Show Sample Output


    1
    awk -F\" '{print $4}' *.log | grep -v "eviljaymz\|\-" | sort | uniq -c | awk -F\ '{ if($1>500) print $1,$2;}' | sort -n
    jaymzcd · 2009-05-05 22:21:04 4
  • I use this (well I normally just drop the F=*.log bit and put that straight into the awk command) to count how many times I get referred from another site. I know its rough, its to give me an idea where any posts I make are ending up. The reason I do the Q="query" bit is because I often want to check another domain quickly and its quick to use CTRL+A to jump to the start and then CTRL+F to move forward the 3 steps to change the grep query. (I find this easier than moving backwards because if you group a lot of domains with the pipe your command line can get quite messy so its normally easier to have it all at the front so you just have to edit it & hit enter). For people new to the shell it does the following. The Q and F equals bits just make names we can refer to. The awk -F\" '{print $4}' $F reads the file specified by $F and splits it up using double-quotes. It prints out the fourth column for egrep to work on. The 4th column in the log is the referer domain. egrep then matches our query against this list from awk. Finally wc -l gives us the total number of lines (i.e. matches). Show Sample Output


    0
    Q="reddit|digg"; F=*.log; awk -F\" '{print $4}' $F | egrep $Q | wc -l
    jaymzcd · 2009-05-05 21:51:16 6
  • there is no explicit find command in DOS you can create a batch file with this one and find all jpegs on the C drive ... note: if creating a batch file "find.bat" the syntax changes to: for %%f in (c) do dir %%f:\%1 /s /p you can then use find *.jpg Show Sample Output


    -5
    for %f in (c) do dir %f:\*.jpg /s /p
    copremesis · 2009-05-05 18:28:18 11
  • It's like `prstat -t` under Solaris Show Sample Output


    1
    ps -eo user,pcpu,pmem | tail -n +2 | awk '{num[$1]++; cpu[$1] += $2; mem[$1] += $3} END{printf("NPROC\tUSER\tCPU\tMEM\n"); for (user in cpu) printf("%d\t%s\t%.2f%\t%.2f%\n",num[user], user, cpu[user], mem[user]) }'
    feraudet · 2009-05-05 16:54:25 4
  • Reads in the ~/.Xdefaults lexicographically sorted with, instead of replacing, the current contents of the specified properties.


    0
    alias xdef_load='xrdb -merge ~/.Xdefaults'
    P17 · 2009-05-05 16:34:06 8

  • -9
    alias b='cd -'
    P17 · 2009-05-05 16:21:22 6
  • Since bash 4.0, you can use ** to recursively expand to all files in the current directory. This behaviour is disabled by default, this command enables it (you'd best put it in your .profile). See the sample output for clarification. In my opinion this is much better than creating hacks with find and xargs when you want to pass files to an application. Show Sample Output


    11
    shopt -s globstar
    Alanceil · 2009-05-05 16:02:44 8
  • You can use this on your session login.


    6
    VBoxManage startvm "name"
    o6291408 · 2009-05-05 13:23:26 6
  • Simple but useful command, I use this for purge an hard disk entry in Virtualbox registry file (is in ~user/.Virtualbox) that persist if I erase a Virtual Machine, so I need to delete it manually.


    -3
    sed -i '/Centos/d' VirtualBox.xml
    servermanaged · 2009-05-05 13:03:55 6
  • This is the alias command that I discussed in my prior release which you can add to your ~/.bashrc. This command asks for the station name and then connects to somafm, Great for those who have linux home entertainment boxes and ssh enabled on them, just for the CLI fiends out there ( I know I'm one of them ;) You can find future releases of this and many more scripts at the teachings of master denzuko - denzuko.co.cc.


    -2
    alias somafm='read -p "Which station? "; mplayer --reallyquiet -vo none -ao sdl http://somafm.com/startstream=${REPLY}.pls'
    denzuko · 2009-05-05 12:13:46 3
  • This is a working version, though probably clumsy, of the script submitted by felix001. This works on ubuntu and CygWin. This would be great as a bash function, defined in .bashrc. Additionally it would work as a script put in the path. Show Sample Output


    0
    lynx -dump randomfunfacts.com | grep -A 3 U | sed 1D
    xizdaqrian · 2009-05-05 07:52:10 12
  • This command might not be useful for most of us, I just wanted to share it to show power of command line. Download simple text version of novel David Copperfield from Poject Gutenberg and then generate a single column of words after which occurences of each word is counted by sort | uniq -c combination. This command removes numbers and single characters from count. I'm sure you can write a shorter version. Show Sample Output


    -4
    wget -q -O- http://www.gutenberg.org/dirs/etext96/cprfd10.txt | sed '1,419d' | tr "\n" " " | tr " " "\n" | perl -lpe 's/\W//g;$_=lc($_)' | grep "^[a-z]" | awk 'length > 1' | sort | uniq -c | awk '{print $2"\t"$1}'
    alperyilmaz · 2009-05-04 16:00:39 11
  • This command is useful if you accidentally untar or unzip an archive in a directory and you want to automatically remove the files. Just untar the files again in a subdirectory and then run the above command e.g. for file in ~/Desktop/temp/*; do rm ~/Desktop/`basename $file`; done


    11
    for file in <directory A>/*; do rm <directory B>/`basename $file`; done
    jamiebullock · 2009-05-04 12:44:50 14
  • Retrieve the current stock price from Yahoo Finance. The output is simply the latest price (which could be delayed). If you want to look up stock for a different company, replace csco with your symbol. Show Sample Output


    11
    curl -s 'http://download.finance.yahoo.com/d/quotes.csv?s=csco&f=l1'
    haivu · 2009-05-04 08:13:59 28
  • The nl command lists the contents of a file where is each line is prefixed by a line number. For more information about this command, check out its man page. I tested under Mac OS X and Xubuntu 9.04


    -2
    nl filename | more
    haivu · 2009-05-04 07:35:16 11
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Check These Out

Pull Total Memory Usage In Virtual Environment
This command basically adds up all of the individual instances processes and gives you a grand total for used memory in that instance alone.

Get a range of SVN revisions from svn diff and tar gz them
Handy when you need to create a list of files to be updated when subversion is not available on the remote host. You can take this tar file, and upload and extract it where you need it. Replace M and N with the revisions specific to yours. Make sure you do this from an updated (svn up) working directory.

Test disk I/O
Especially useful to gauge the performance of a VPS.

RTFM function
Simple edit to work for OSX. Now just add this to your ~/.profile and `source ~/.profile`

encode HTML entities
Encodes HTML entities from input (file or stdin) so it's possible to directly past the result to a blog or HTML source file.

rename a file to its md5sum

Merge PDFs with Ghostscript wrapped in a function
This is an expansion on a previous entry, which I've wrapped in a function and placed in my profile. The "$@" is a positional parameter, much like "$*", but the parameters are passed on intact, without interpretation or expansion; so you can simply call the function like this: mergepdf * This will output a merged PDF of all PDFs in the current directory. Alternatively, you can simply list them like so: mergepdf 00.pdf 01.pdf 02.pdf ... N.B. Passing a wildcard will merge all PDFs in the current directory in name order, e.g. 00.pdf 01.pdf aa.pdf ab.pdf

Remove spaces from filenames - through a whole directory tree.
Sometimes, you don't want to just replace the spaces in the current folder, but through the whole folder tree - such as your whole music collection, perhaps. Or maybe you want to do some other renaming operation throughout a tree - this command's useful for that, too. To rename stuff through a whole directory tree, you might expect this to work: for a in `find . -name '* *'`;do mv -i "$a" ${a// /_};done No such luck. The "for" command will split its parameters on spaces unless the spaces are escaped, so given a file "foo bar", the above would not try to move the file "foo bar" to "foo_bar" but rather the file "foo" to "foo", and the file "bar" to "bar". Instead, find's -execdir and -depth arguments need to be used, to set a variable to the filename, and rename files within the directory before we rename the directory. It has to be -execdir and won't work with just -exec - that would try to rename "foo bar/baz quux" to "foo_bar/baz_quux" in one step, rather than going into "foo bar/", changing "baz quux" to "baz_quux", then stepping out and changing "foo bar/" into "foo_bar/". To rename just files, or just directories, you can put "-type f" or "-type d" after the "-depth" param. You could probably safely replace the "mv" part of the line with a "rename" command, like rename 'y/ /_/' *, but I haven't tried, since that's way less portable.

List all authors of a particular git project
List everyone who committed to a particular project, listed alphabetically. To list by commits, add -n to the shortlog.

Rename files in batch


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