Commands using comm sorted by votes

Commands using comm (11)

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show lines that appear in both file1 and file2
This is sample output - yours may be different.
6

comm -1 -2 <(sort file1) <(sort file2)

jcgam69 · 2009-02-19 21:10:19 2
Find common lines between two files
This is sample output - yours may be different.
2

comm -12 FILE1.sorted FILE2.sorted > common

evandrix · 2011-07-09 08:53:17 0
colorize comm output

It just colorizes the line based on if it has 0, 1 or 2 tabs at the beginning of the line. Won't work so well if lines already begin with tabs (too bad comm doesn't have an option to substitute \t for something else). Don't forget comm needs input files to be sorted. You can use a shortcut like this with bash: comm Show Sample Output
This is sample output - yours may be different.
```
comm <(printf "123\n456\n") <(printf "123\n789\n") | sed -e 's/^[^\t].*/\x1b[33m&\x1b[0m/' -e  's/^\t[^\t].*/\x1b[36m&\x1b[0m/' -e 's/^\t\t[^\t].*/\x1b[32m&\x1b[0m/'
                123
456
        789
```
1

comm file1 file2 | sed -e 's/^[^\t].*/\x1b[33m&\x1b[0m/' -e 's/^\t[^\t].*/\x1b[36m&\x1b[0m/' -e 's/^\t\t[^\t].*/\x1b[32m&\x1b[0m/'

recursiverse · 2010-05-07 00:14:31 0
Single words from Amazon Kindle 3 notes

You can use any dictionary you want, in any language. This command will output all single-word annotations that you have underlined in your Kindle device (provided the file) given a list of language-specific words. If you want to learn vocabulary, this command is ideal.
This is sample output - yours may be different.
1

awk -F" " '{ if ( NF == 1 ) { print $0 } }' KINDLE_NOTES_FILE.txt | sed -e '/^=/d' | sed -e '/^[[:space:]]*$/d' -e 's/,//g' | sort | comm -12 List_of_language_words.txt - | uniq

parmegv · 2011-08-15 14:35:33 0
Sorts and compare 2 files line by line
This is sample output - yours may be different.
1

comm -12 <(sort -u File1) <(sort -u File2)

guillaume1306 · 2018-09-07 11:36:15 0
intersection of two arrays

the comm utility (opposite of diff) show commonalities in files (in this case strings) Show Sample Output
This is sample output - yours may be different.
```
$ echo ${Array3[@]}
five four
```
0

Array1=( "one" "two" "three" "four" "five" );Array2=( "four" "five" "six" "seven" );savedIFS="${IFS}";IFS=$'\n';Array3=($(comm -12 <(echo "${Array1[*]}" |sort -u) <(echo "${Array2[*]}" | sort -u)));IFS=$savedIFS

elofland · 2010-08-23 19:25:22 0
Delimiter Hunting

Search in decimal rather than hex. od dumps the character list, cut to remove offsets, sort -u gives the used characters. seq gives the comparison list, but we need this sorted alphabetically for comm, which does the filtering. I drop to perl to convert back to characters (is there a better way?) and then use od to dump them in a print-safe format. Show Sample Output
This is sample output - yours may be different.
```
0000000  \0 001  \n   j   k  \v  \f   z   {   |   }   ~ 177  \r 016 017
0000020 020 021 022 023 002 024 025 026 027 030 031 032 033 034 035 003
0000040 036 037       !   "   #   $   %   &   ' 004   (   )   *   +   ,
0000060   -   .   /   0   1 005   2   3   4   5   6   7   8   9   :   ;
0000100 006   <   =   >   ?   @   A   B   C   D   E  \a   F   G   H   I
0000120   J   K   L   M   N   O  \b   P   Q   R   S   T   U   V   W   X
0000140   Y  \t   Z   [   \   ]   ^   _   `   a   b   c
0000154
```
0

comm -13 <(od -vw1 -tu1 dummy.txt|cut -c9-|sort -u) <(seq 0 127|sort)|perl -pe '$_=chr($_)'|od -c

bazzargh · 2012-01-09 01:32:20 0
Compare two files and output similarities to a new file

Use comm command to compare two text files and display lines that are exactly the same on both files and write those to a new output file using tee
This is sample output - yours may be different.
0

comm -1 -2 <(sort file1) <(sort file2) |& tee outputfile

poole · 2016-10-26 18:45:37 0
Generate a list of items from a couple of items lists A and B, getting (B - A ) set
This is sample output - yours may be different.
0

comm -13 ItemsListtoAvoid.txt AllItemsList.txt > ItemsDifference.txt

keltroth · 2018-10-29 14:43:16 3
Describe differences between files
This is sample output - yours may be different.
-1

comm --nocheck-order -31

dullgiulio · 2011-06-02 19:17:46 0
Save lines unique to file2

If both file1 and file2 are already sorted: comm -13 file1 file2 > file-new
This is sample output - yours may be different.
-2

comm -13 <(sort file1) <(sort file2) > file-new

daa · 2011-10-01 18:07:54 0

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Find all symlinks that link to directories

Use jq to validate and pretty-print json output

The `jq` tool can also be used do validate json files and pretty print output: ` jq < file.json` Available on several platforms, including newer debian-based systems via `#sudo apt install jq`, mac via `brew install jq`, and from source https://stedolan.github.io/jq/download/ This alternative to the original avoids the useless use of cat

Alias for quick command-line volume set (works also remotely via SSH)

If you're addicted to command-line solutions of ordinary actions or if you just want to set your volume from bed via mobile phone SSH, you can set this alias and use it as $ setvol 50 for setting volume on 50% gain Works only with ALSA, tested on Ubuntu 8.10. Give me some info about your experience. TIP: Try aslo command "mute" to toggle mute/unmute sound. But I don't know if this works on all distros.

Grep inside Vim and navigate results

Will search for the given pattern and build a list of occurrences. Then you can use :copen and :cclose to toggle the list. When browsing the list, ENTER will take you to that line in the file.

Killing processes with your mouse in an infinite loop

Useful for quickly cleaning your Desktop. Nice joke if launched at startup.

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"

grep expression (perl regex) to extract all ip addresses from both ip and ifconfig commands output

It uses the following GNU grep options: "-o" which shows only the matching part of the line and "-P" which allows the use of Perl regular expressions.

tail, with specific pattern colored

Shows all packages installed that are recommended by other packages

Shows the packages installed on your system that are recomemnded by other packages. You should remove these packages.

Quickly build ulimit command from current values

It is helpful to know the current limits placed on your account, and using this shortcut is a quick way to figuring out which values to change for optimization or security. Alias is: $ alias ulimith="command ulimit -a|sed 's/^.*$[a-z]$)$.*$$/-\1\2/;s/^/ulimit /'|tr '\n' ' ';echo" Here's the result of this command: $ ulimit -c 0 -d unlimited -e 0 -f unlimited -i 155648 -l 32 -m unlimited -n 8192 -p 8 -q 819200 -r 0 -s 10240 -t unlimited -u unlimited -v unlimited -x unlimited $ ulimit -a core file size (blocks, -c) 0 data seg size (kbytes, -d) unlimited scheduling priority (-e) 0 file size (blocks, -f) unlimited pending signals (-i) 155648 max locked memory (kbytes, -l) 32 max memory size (kbytes, -m) unlimited open files (-n) 8192 pipe size (512 bytes, -p) 8 POSIX message queues (bytes, -q) 819200 real-time priority (-r) 0 stack size (kbytes, -s) 10240 cpu time (seconds, -t) unlimited max user processes (-u) unlimited virtual memory (kbytes, -v) unlimited file locks (-x) unlimited

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Commands using comm (11)

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