All commands (14,187)

  • Find in all files in the current directory, just a find shorthand


    -2
    find ./ -name $1 -exec grep -H -n $2 '{}' ';'
    packetloss · 2009-11-24 07:25:27 4
  • Replace with XFCE Window Manager


    -2
    xfwm4 --replace
    Bonster · 2012-04-03 14:05:09 3
  • Find today created files

    Finds files modified today since 00:00, removes ugly dotslash characters in front of every filename, and sorts them. *EDITED* with the advices coming from flatcap (thanks!)


    -2
    find -maxdepth 1 -type f -newermt "00:00" -printf "%f\n" | sort
    TetsuyO · 2013-03-23 12:50:01 8
  • determine if CPU is 32-bit or 64-bit

    If the 'lm' flag is present, then the CPU is 64-bit. If no output, then CPU is 32-bit. Show Sample Output


    -2
    grep lm /proc/cpuinfo
    bobbydale · 2009-02-19 22:48:47 6
  • Sorted list of established destination connections

    Sometimes I need a quick visual way to determine if there is a particular server who is opening too many connections to the database machine.


    -2
    netstat | grep EST | awk '{print $5}' | sort
    unixoid · 2009-11-24 13:38:28 4
  • Change default values on Foundry (Brocade) RX and MLX BigIron L3 (routers & switches)

    The sample output, is a display of the values you can change, using this command. After a change of of these settings you will need to reload the box, by typing...wait...wait for IT: 'reload'. This comes in handy when working with the RX hardware, for example, which has a base limitation of 32 (RSTP (802-1w) instances. For all of you paying attention that means if you run RSTP on a RX you can only have 32 VLANs. Sure, you can have common groups of VLANs, like back in the day style MSTP, PVST, PVST+ (and all that old STP (802.1d) mess), before "per vlan spanning-tree", RSTP (802-1w), was made. But who wants to do all that? Show Sample Output


    -2
    system max <some value>
    rootgeek · 2010-03-26 02:39:00 5
  • Bash function do emulate send to trash files

    # put into .bashrc function trash() { if [ -z "$*" ] ; then echo "Usage: trash filename" else local TRASH="${HOME}/.local/share/Trash" if [ ! -d "$TRASH/files" ]; then mkdir -p "$TRASH/files"; fi if [ ! -d "$TRASH/info" ]; then mkdir -p "$TRASH/info"; fi local IFS_BKP=$IFS IFS=' ' for FILE in $@ ; do local BASE=$( basename "$FILE" ) local TRASH_NAME="$BASE" local COUNTER=1 while [ -e "$TRASH/files/$TRASH_NAME" ]; do COUNTER=`expr $COUNTER + 1` TRASH_NAME="$BASE.$COUNTER" done local FULL_PATH=$( readlink -f "$FILE" ) local DATE=$( date +%Y-%m-%dT%H:%M:%S ) mv "$FULL_PATH" "$TRASH/files/$TRASH_NAME" if [ $? -eq 0 ]; then echo "[Trash Info] Path=$FULL_PATH DeletionDate=$DATE" > "$TRASH/info/$TRASH_NAME.trashinfo" fi done IFS=$IFS_BKP fi }


    -2
    trash <file>
    bkmeneguello · 2012-11-22 18:05:11 4
  • Get currently logged in console user's shortname


    -2
    stat -f '%Su' /dev/console
    thealanberman · 2016-01-13 20:53:13 10
  • Forward connections

    Forward connections to $HOSTNAME:8080 out to $HOST:80


    -2
    ssh -g -L 8080:localhost:80 root@$HOST
    kayowas · 2009-10-24 20:56:00 3
  • Cat files in a directory; for loop command

    Original submitted version would break if any filenames had whitespaces in them. The command is a Bad Idea anyhow, because you will end up `cat`ing a binary or something else specacularly bad.


    -2
    for file in ./*; do cat "$file"; sleep 0.3
    DopeGhoti · 2011-11-28 20:10:57 3
  • make soft links from a downloaded bin folder


    -2
    ls | while read line; do ln -s "$(pwd)/$line" "/usr/bin/$line"; done
    rawm · 2015-03-24 06:47:56 10
  • Group page count in pmwiki data base

    PmWiki stores wiki pages as Group.Name. Simply split the directory listing and count frequency of group occurances. Show Sample Output


    -2
    cd /path/to/pmwiki/wiki.d;/bin/ls -1 | perl -ne 'my ($group,$name)=split(/\./);$counts{$group}++;' -e 'END { foreach $group (sort keys %counts) {printf("%d\t%s\n",$counts{$group},$group);} }'|sort -rn
    tamouse · 2011-09-14 19:33:39 4
  • Show "Max" settings for PHP

    Show the maximum settings in effect for PHP at the command line. Show Sample Output


    -2
    php -i|grep -i max
    rjamestaylor · 2009-02-20 03:29:11 6
  • Recursively remove .svn directories

    Recursively remove .svn directories from the current location.


    -2
    rm -rf `find . -name .svn`
    jfcalvo · 2010-02-23 08:35:06 6
  • Outgoing IP of server


    -2
    wget http://www.whatismyip.org --quiet -O - | cat
    wr8cr8 · 2010-07-30 08:40:16 13
  • resize a NTFS partition

    With this command you can resize an NTFS partition by specifying the new size (X) in Kbytes, Mbytes or Gbytes. If you plan to do this it is advisable to precede --no-action parameter to size see more: http://ubuntuforums.org/showthread.php?t=1244058 and http://en.wikipedia.org/wiki/Ntfsresize


    -2
    ntfsresize --size X[k,M.G] /dev/hda1
    0disse0 · 2011-07-02 17:47:05 3
  • Dump 389ds schema

    Dump 389ds schema, putting "\n " on one line with perl. You have to specify the objectclasses, attributetypes operational attributes too, otherwise they won't be dumped!


    -2
    ldapsearch -xLLL -b "cn=schema" "(objectclass=*)" \ \* objectclasses attributetypes | perl -p0e 's/\n //g'
    ioggstream · 2012-04-04 13:31:31 4
  • Calculates fake folder checksum based on folder's files' md5sums

    For quick validation of folder's file-contents (structure not taken into account) - I use it mostly to check if two folders' contents are the same. Show Sample Output


    -2
    find path/to/folder/ -type f -print0 | xargs -0 -n 1 md5sum | awk '{print $1}' | sort | md5sum | awk '{print $1}'
    mcover · 2009-02-16 19:39:37 10
  • Extract all 7zip files in current directory taking filename spaces into account


    -2
    7za x \*.zip
    andrew112358 · 2010-01-25 21:50:15 2
  • NMAP_UNDERGROUND_VECTRA

    Show Sample Output


    -2
    nmap -sS -O -v -oS - 192.168.2.0/24
    ene2002 · 2014-01-31 18:04:06 151
  • Printout a list of field numbers (awk index) from a CSV file with headers as first line.

    -F, use , as field separator gsub() deletes all spaces for(){} loops over all input fields and print their index and value exit exit after first line Show Sample Output


    -2
    awk -F, '{gsub(/ /,"");for(f=1;f<=NF;f++) print f,$f;exit}' file.csv
    sesom42 · 2015-08-26 09:30:43 11
  • Flush memory cache


    -2
    free && sync && echo 3 > /proc/sys/vm/drop_caches && free
    ironmarc · 2016-11-02 08:51:01 23
  • check mysql capacity to handle traffic


    -2
    mysqlslap  --query=/root/select_query_cp.sql --concurrency=10 --iterations=5  --create-schema=cvts1
    shantanuo · 2020-02-15 10:40:39 85
  • Quick alias for playing music.

    An alias i made for myself to play music in a faster way. Works great when you have Guake / Tilda installed (Console that drops down like in the game QUAKE) --- I put this in my bash_alias file (I'm on ubuntu, the bash_alias file does autostart with the right config) but it works putting it in bashrc too. Or anything that autostarts when the console is opened. --- Needs Mplayer and music files to work. With out music theres nothing to play! Oh, and also, without modification, this alias will try to play stuff from your ~/Music folder! (case sensitive). Make sure that folder exists and has music OR edit this alias to fit your needs. Show Sample Output


    -2
    alias mux='clear && cd ~/Music/ && ls && echo -n "File> " && read msi && mplayer ~/Music/$msi'
    Noxn · 2009-03-23 10:45:27 16
  • convert Unix newlines to DOS newlines


    -2
    sed 's/$'"/`echo \\\r`/"
    fooMan · 2009-02-16 20:07:08 11
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Which processes are listening on a specific port (e.g. port 80)
swap out "80" for your port of interest. Can use port number or named ports e.g. "http"

Insert a colon between every two digits
I sometimes have large files of MAC addresses stored in a file, some databases need the information stored with the semicolon (makes for easier programming a device) others don't. I have a barcode to text file scanner which usually butchers MAC addresses so this was the fix> I initially did this in awk ;) awk '{for(i=10;i>=2;i-=2)$0=substr($0,1,i)":"substr($0,i+1);print}' mac_address_list

Display _something_ when an X app fails
When you run an X program from a terminal you can see any errors. But when it's run from another X program (eg from a menu item, from your fluxbox 'keys' file etc) it might just die and you see nothing (except perhaps in .xsession-errors). Instead, launch it via this command and you'll see the termination status, stderr and stdout. eg: "xlaunch firefox" or "xlaunch 'echo stdout; echo stderr >&2; false'": 'echo stdout; echo stderr >&2; false' failed with error 1 STDERR: stderr STDOUT: stdout

grab all commandlinefu shell functions into a single file, suitable for sourcing.
Much simpler but not as many features as the alternative.

exclude a column with awk
Here's an awk alternative, for those lacking the version of cut with the --complement argument.

Which processes are listening on a specific port (e.g. port 80)
swap out "80" for your port of interest. Can use port number or named ports e.g. "http"

Find usb device in realtime
Using this command you can track a moment when usb device was attached.

Convert CSV to JSON
Replace 'csv_file.csv' with your filename.

Create arbitrary big file full of zeroes but done in a second
If you want to create fast a very big file for testing purposes and you do not care about its content, then you can use this command to create a file of arbitrary size within less than a second. Content of file will be all zero bytes. The trick is that the content is just not written to the disk, instead the space for it is somehow reserved on operating system level and file system level. It would be filled when first accessed/written (not sure about the mechanism that lies below, but it makes the file creation super fast). Instead of '1G' as in the example, you could use other modifiers like 200K for kilobytes (1024 bytes), 500M for megabytes (1024 * 1024 bytes), 20G for Gigabytes (1024*1024*1024 bytes), 30T for Terabytes (1024^4 bytes). Also P for Penta, etc... Command tested under Linux.

Copy specific files recursively using the same tree organization.
This command has been used to overwrite corrupted "entries" files of a corrupted subversion working copy. Note the --files-from input format.

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