Commands using sort (800)
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1grep -R Subject /var/spool/exim/input/ | sed s/^.*Subject:\ // | sort | uniq -c | sort -n > ~/email_sort.$(date +%m.%d.%y).txt
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1du --max-depth=1 | sort -nr | awk ' BEGIN { split("KB,MB,GB,TB", Units, ","); } { u = 1; while ($1 >= 1024) { $1 = $1 / 1024; u += 1 } $1 = sprintf("%.1f %s", $1, Units[u]); print $0; } '
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This one line Perl script will display the smallest to the largest files sizes in all directories on a server. Show Sample Output
1du -k | sort -n | perl -ne 'if ( /^(\d+)\s+(.*$)/){$l=log($1+.1);$m=int($l/log(1024)); printf ("%6.1f\t%s\t%25s %s\n",($1/(2**(10*$m))),(("K","M","G","T","P")[$m]),"*"x (1.5*$l),$2);}' | more -
It grabs the PID's top resource users with $(ps -eo pid,pmem,pcpu| sort -k 3 -r|grep -v PID|head -10) The sort -k is sorting by the third field which would be CPU. Change this to 2 and it will sort accordingly. The rest of the command is just using diff to display the output of 2 commands side-by-side (-y flag) I chose some good ones for ps. pidstat comes with the sysstat package(sar, mpstat, iostat, pidstat) so if you don't have it, you should. I might should take off the timestamp... :| Show Sample Output
1for i in $(ps -eo pid,pmem,pcpu| sort -k 3 -r|grep -v PID|head -10|awk '{print $1}');do diff -yw <(pidstat -p $i|grep -v Linux) <(ps -o euser,pri,psr,pmem,stat -p $i|tail);done -
1sed -e 's/[;|][[:space:]]*/\n/g' .bash_history | cut --delimiter=' ' --fields=1 | sort | uniq --count | sort --numeric-sort --reverse | head --lines=20
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1find <directory> -type f -printf "%T@\t%p\n"|sort -n|cut -f2|xargs ls -lrt
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This works in combination with http://www.commandlinefu.com/commands/view/10496/identify-exported-sonames-in-a-path as it reports the NEEDED entries present in the files within a given path. You can then compare it with the libraries that are exported to make sure that, when cross-building a firmware image, you're not bringing in dependencies from the build host. The short version of it as can be seen in the same output is
scanelf -RBnq -F "+n#f" $1 | tr ',' '\n' | sort -uShow Sample Output1scanelf --nobanner --recursive --quiet --needed --format "+n#F" $1 | tr ',' '\n' | sort -u -
from my bashrc ;)
1find . -mount -type f -printf "%k %p\n" | sort -rg | cut -d \ -f 2- | xargs -I {} du -sh {} | less -
or
tree -ifsF --noreport .|sort -n -k2|grep -v '/$'(rows presenting directory names become hidden)1tree -ifs --noreport .|sort -n -k2 -
See the summary. Show Sample Output
1lsof +c 15 | awk '{print $1}' | sort | uniq -c | sort -rn | head -
This command give a human readable result without messing up the sorting.
1for i in G M K; do du -hx /var/ | grep [0-9]$i | sort -nr -k 1; done | less -
1tcpdump -ntr NAME_OF_CAPTURED_FILE.pcap 'tcp[13] = 0x02 and dst port 80' | awk '{print $4}' | tr . ' ' | awk '{print $1"."$2"."$3"."$4}' | sort | uniq -c | awk ' {print $2 "\t" $1 }'
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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
1sudo lastb | awk '{if ($3 ~ /([[:digit:]]{1,3}\.){3}[[:digit:]]{1,3}/)a[$3] = a[$3]+1} END {for (i in a){print i " : " a[i]}}' | sort -nk 3 -
In OSX you would have to make sure that you "sudo -s" your way to happiness since it will give a few "Permission denied" errors before finally spitting out the results. In OSX the directory structure has to start with the "Users" Directory then it will recursively perform the operation. Your Lord and master, Mematron Show Sample Output
1sudo -s du -sm /Users/* | sort -nr | head -n 10 -
You can simply run "largest", and list the top 10 files/directories in ./, or you can pass two parameters, the first being the directory, the 2nd being the limit of files to display. Best off putting this in your bashrc or bash_profile file Show Sample Output
1largest() { dir=${1:-"./"}; count=${2:-"10"}; echo "Getting top $count largest files in $dir"; du -sx "$dir/"* | sort -nk 1 | tail -n $count | cut -f2 | xargs -I file du -shx file; } -
Enhanced version: fixes sorting by human readable numbers, and filters out non MB or GB entries that have a G or an M in their name.
1du --max-depth=1 -h * |sort -h -k 1 |egrep '(M|G)\s' -
Replace \-dev with whatever you wanna search for
1dpkg-query -Wf '${Installed-Size}\t${Package}\n' | grep "\-dev" | sort -n | awk '{ sum+=$1} END {print sum/1024 "MB"}' -
Interesting to see which packages are larger than the kernel package. Useful to understand which RPMs might be candidates to remove if drive space is restricted. Show Sample Output
1rpm -qa --queryformat '%{size} %{name}-%{version}-%{release}\n' | sort -k 1,1 -rn | nl | head -16 -
the column number is '6'
1cut -d',' -f6 file.csv | sort | uniq -
make usable on OSX with filenames containing spaces. note: will still break if filenames contain newlines... possible, but who does that?!
1svn ls -R | egrep -v -e "\/$" | tr '\n' '\0' | xargs -0 svn blame | awk '{print $2}' | sort | uniq -c | sort -nr -
parallel can be installed on your central node and can be used to run a command multiple times. In this example, multiple ssh connections are used to run commands. (-j is the number of jobs to run at the same time). The result can then be piped to commands to perform the "reduce" stage. (sort then uniq in this example). This example assumes "keyless ssh login" has been set up between the central node and all machines in the cluster. bashreduce may also do what you want. Show Sample Output
1parallel -j 50 ssh {} "ls" ::: host1 host2 hostn | sort | uniq -c -
1awk '{print $1}' ~/.bash_history | sort | uniq -c | sort -rn | head -n 10
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1du -m --max-depth=1 [DIR] | sort -nr
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The other commands were good, but they included packages that were installed and then removed. This command only shows packages that are currently installed, sorts smallest to largest, and formats the sizes to be human readable. Show Sample Output
1dpkg-query --show --showformat='${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}' -
Compute the md5 checksums for the contents of two mirrored directories, then sort and diff the results. If everything matches, nothing is returned. Otherwise, any checksums which do not match, or which exist in one tree but not the other, are returned. As you might imagine, the output is useful only if no errors are found, because only the checksums, not filenames, are returned. I hope to address this, or that someone else will!
1diff <(sort <(md5deep -r /directory/1/) |cut -f1 -d' ') <(sort <(md5deep -r /directory/2/) |cut -f1 -d' ') - ‹ First < 12 13 14 15 16 > Last ›
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