Commands tagged sort (176)

  • Are the two lines anagrams?

    This works by reading in two lines of input, turning each into a list of one-character matches that are sorted and compared.


    1
    (echo foobar; echo farboo) | perl -E 'say[sort<>=~/./g]~~[sort<>=~/./g]?"anagram":"not anagram"'
    doherty · 2011-02-17 02:15:46 119
  • Get the size of all the directories in current directory (Sorted Human Readable)

    as per eightmillion's comment. Simply economical :)


    1
    du -h | sort -hr
    mooselimb · 2011-11-06 23:15:36 3
  • Top 20 commands in your bash history


    1
    sed -e 's/[;|][[:space:]]*/\n/g' .bash_history | cut --delimiter=' ' --fields=1 | sort | uniq --count | sort --numeric-sort --reverse | head --lines=20
    WissenForscher · 2012-02-17 23:34:16 5
  • Display IP : Count of failed login attempts

    The lastb command presents you with the history of failed login attempts (stored in /var/log/btmp). The reference file is read/write by root only by default. This can be quite an exhaustive list with lots of bots hammering away at your machine. Sometimes it is more important to see the scale of things, or in this case the volume of failed logins tied to each source IP. The awk statement determines if the 3rd element is an IP address, and if so increments the running count of failed login attempts associated with it. When done it prints the IP and count. The sort statement sorts numerically (-n) by column 3 (-k 3), so you can see the most aggressive sources of login attempts. Note that the ':' character is the 2nd column, and that the -n and -k can be combined to -nk. Please be aware that the btmp file will contain every instance of a failed login unless explicitly rolled over. It should be safe to delete/archive this file after you've processed it. Show Sample Output


    1
    sudo lastb | awk '{if ($3 ~ /([[:digit:]]{1,3}\.){3}[[:digit:]]{1,3}/)a[$3] = a[$3]+1} END {for (i in a){print i " : " a[i]}}' | sort -nk 3
    sgowie · 2012-09-11 14:51:10 4
  • Lists all usernames in alphabetical order


    1
    getent passwd | cut -d: -f1 | sort
    theftf · 2012-09-12 17:16:54 4
  • Shows size of dirs and files, hidden or not, sorted.

    Enhanced version: fixes sorting by human readable numbers, and filters out non MB or GB entries that have a G or an M in their name.


    1
    du --max-depth=1 -h * |sort -h -k 1 |egrep '(M|G)\s'
    TerDale · 2013-02-14 08:56:56 6
  • most used unix commands


    1
    awk '{print $1}' ~/.bash_history | sort | uniq -c | sort -rn | head -n 10
    nesses · 2013-05-03 16:24:30 6
  • List your largest installed packages (on Debian/Ubuntu)

    The other commands were good, but they included packages that were installed and then removed. This command only shows packages that are currently installed, sorts smallest to largest, and formats the sizes to be human readable. Show Sample Output


    1
    dpkg-query --show --showformat='${Package;-50}\t${Installed-Size}\n' `aptitude --display-format '%p' search '?installed!?automatic'` | sort -k 2 -n | grep -v deinstall | awk '{printf "%.3f MB \t %s\n", $2/(1024), $1}'
    EvilDennisR · 2013-07-26 23:18:20 13
  • netstat with group by (ip adress)

    Same as the rest, but handle IPv6 short IPs. Also, sort in the order that you're probably looking for. Show Sample Output


    1
    netstat -ntu | awk ' $5 ~ /^(::ffff:|[0-9|])/ { gsub("::ffff:","",$5); print $5}' | cut -d: -f1 | sort | uniq -c | sort -nr
    mrwulf · 2013-09-10 19:28:06 6
  • Parse compressed apache error log file and show top errors

    credit shall fall to this for non-gzipped version: https://gist.github.com/marcanuy/a08d5f2d9c19ba621399 Show Sample Output


    1
    zcat error.log.gz | sed 's^\[.*\]^^g' | sed 's^\, referer: [^\n]*^^g' | sort | uniq -c | sort -n
    zanhsieh · 2014-09-24 05:26:24 8
  • tcpdump top 10 talkers

    capture 2000 packets and print the top 10 talkers


    1
    tcpdump -tnn -c 2000 -i eth0 | awk -F "." '{print $1"."$2"."$3"."$4}' | sort | uniq -c | sort -nr | awk ' $1 > 10 '
    hochmeister · 2014-09-26 01:15:23 10
  • BIGGEST Files in a Directory

    Find biggest files in a directory Show Sample Output


    1
    find . -printf '%.5m %10M %#9u %-9g %TY-%Tm-%Td+%Tr [%Y] %s %p\n'|sort -nrk8|head
    AskApache · 2014-12-10 23:48:20 9
  • Print all open regular files sorted by the number of file handles open to each.

    List all open files of all processes. . find /proc/*/fd Look through the /proc file descriptors . -xtype f list only symlinks to file . -printf "%l\n" print the symlink target . grep -P '^/(?!dev|proc|sys)' ignore files from /dev /proc or /sys . sort | uniq -c | sort -n count the results . Many processes will create and immediately delete temporary files. These can the filtered out by adding: ... | grep -v " (deleted)$" | ... Show Sample Output


    1
    find /proc/*/fd -xtype f -printf "%l\n" | grep -P '^/(?!dev|proc|sys)' | sort | uniq -c | sort -n
    flatcap · 2015-08-18 17:58:21 11
  • My random music player

    This is my favorite music player I use in my beloved Linux systems,server or desktop Enjoy :-) Show Sample Output


    1
    find /home/user/M?sica/ -type f -name "*.mp3" | shuf --head-count=20 --output=/home/user/playlist.m3u ; sort -R /home/user/playlist.m3u | mplayer -playlist -
    abaddon · 2016-06-10 03:04:40 20
  • processes per user counter

    No need for sort Show Sample Output


    1
    ps hax -o user --sort user | uniq -c
    sharkhands · 2016-09-15 23:31:51 15
  • find with high precission (nanoseconds 1/1,000,000,000s) the last changed file.

    this is good for variables if you have many script created files and if you want to know which one is the last created/changed one..


    1
    find . -type f -print0 | xargs -0 stat -c '%y %n' | sort -n -k 1,1 | awk 'END{print $NF}'
    emphazer · 2018-05-14 08:47:41 156
  • Sorts and compare 2 files line by line


    1
    comm -12 <(sort -u File1) <(sort -u File2)
    guillaume1306 · 2018-09-07 11:36:15 331
  • sort list of email addresses by domain.tld

    email random list can be created here: https://www.randomlists.com/email-addresses Show Sample Output


    1
    sort -t@ -k2 emails.txt
    cellcore · 2019-02-24 17:41:17 34
  • Find failures with journalctl

    Sometimes things break. You can find the most recent errors using a combination of journalctl, along with the classic tools sort and uniq Show Sample Output


    1
    journalctl --no-pager --since today --grep 'fail|error|fatal' --output json | jq '._EXE' | sort | uniq -c | sort --numeric --reverse --key 1
    mikhail · 2021-12-22 22:27:17 212
  • List files recursively sorted by modified time


    0
    find /home/fizz -type f -printf '%TY-%Tm-%Td %TT %p\n' | sort
    fizz · 2009-05-20 10:45:39 6
  • Sorting by rows

    Save the script as: sort_file Usage: sort_file < sort_me.csv > out_file.csv This script was originally posted by Admiral Beotch in LinuxQuestions.org on the Linux-Software forum. I modified this script to make it more portable. Show Sample Output


    0
    infile=$1 for i in $(cat $infile) do echo $i | tr "," "\n" | sort -n | tr "\n" "," | sed "s/,$//" echo done
    iframe · 2009-07-12 21:23:37 6
  • Lists unambigously names of all xml elements used in files in current directory

    This one will work a little better, the regular expressions it is not 100% accurate for XML parsing but it will suffice any XML valid document for sure. Show Sample Output


    0
    grep -Eho '<[a-ZA-Z_][a-zA-Z0-9_-:]*' * | sort -u | cut -c2-
    inkel · 2009-08-05 21:54:29 3
  • Randomize lines (opposite of | sort)

    The sort utility is well used, but sometimes you want a little chaos. This will randomize the lines of a text file. BTW, on OS X there is no | sort -R option! There is also no | shuf These are only in the newer GNU core... This is also faster than the alternate of: | awk 'BEGIN { srand() } { print rand() "\t" $0 }' | sort -n | cut -f2- Show Sample Output


    0
    cat ~/SortedFile.txt | perl -wnl -e '@f=<>; END{ foreach $i (reverse 0 .. $#f) { $r=int rand ($i+1); @f[$i, $r]=@f[$r,$i] unless ($i==$r); } chomp @f; foreach $line (@f){ print $line; }}'
    drewk · 2009-09-24 15:42:43 5
  • List your largest installed packages (on Debian/Ubuntu)

    List packages and their disk usage in decreasing order. This uses the "Installed-Size" from the package metadata. It may differ from the actual used space, because e.g. data files (think of databases) or log files may take additional space. Show Sample Output


    0
    perl -ne '$pkg=$1 if m/^Package: (.*)/; print "$1\t$pkg\n" if m/^Installed-Size: (.*)/;' < /var/lib/dpkg/status | sort -rn | less
    hfs · 2009-10-19 12:55:59 7
  • Randomize lines (opposite of | sort)

    print the lines of a file in randomized order Show Sample Output


    0
    perl -wl -e '@f=<>; for $i (0 .. $#f) { $r=int rand ($i+1); @f[$i, $r]=@f[$r,$i] if ($i!=$r); } chomp @f; print join $/, @f;' try.txt
    JohnGH · 2009-12-21 21:15:55 3
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display a smiling smiley if the command succeeded and a sad smiley if the command failed
you could save the code between if and fi to a shell script named smiley.sh with the first argument as and then do a smiley.sh to see if the command succeeded. a bit needless but who cares ;)

List the binaries installed by a Debian package
GNU grep's perl-compatible regular expression(PCRE).

Create Encrypted WordPress MySQL Backup without any DB details, just the wp-config.php
The coolest way I've found to backup a wordpress mysql database using encryption, and using local variables created directly from the wp-config.php file so that you don't have to type them- which would allow someone sniffing your terminal or viewing your shell history to see your info. I use a variation of this for my servers that have hundreds of wordpress installs and databases by using a find command for the wp-config.php file and passing that through xargs to my function.

Link a deep tree of files all into on directory
If you want to pull all of the files from a tree that has mixed files and directories containing files, this will link them all into a single directory. Beware of filesystem files-per-directory limits.

show each new entry in system messages as a popup
It willl popup a message for each new entry in /var/log/messages found on the notify-send howto page on ubuntuforums.org. Posted here only because it is one of the favourites of mine.

Show File System Hierarchy
Curious about differences between /bin, /usr/bin, and /usr/local/bin? What should be in the /sbin dir? Try this command to find out. Tested against Red Hat & OS X

Print text string vertically, one character per line.
Define a function $ vert () { echo $1 | grep -o '.'; } Use it to print some column headers $ paste

Resets your MAC to a random MAC address to make you harder to find.
Next time you are leaching off of someone else's wifi use this command before you start your bittorrent ...for legitimate files only of course. It creates a hexidecimal string using md5sum from the first few lines of /dev/urandom and splices it into the proper MAC address format. Then it changes your MAC and resets your wireless (wlan0:0).

Convert seconds to [DD:][HH:]MM:SS
Converts any number of seconds into days, hours, minutes and seconds. sec2dhms() { declare -i SS="$1" D=$(( SS / 86400 )) H=$(( SS % 86400 / 3600 )) M=$(( SS % 3600 / 60 )) S=$(( SS % 60 )) [ "$D" -gt 0 ] && echo -n "${D}:" [ "$H" -gt 0 ] && printf "%02g:" "$H" printf "%02g:%02g\n" "$M" "$S" }

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