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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Matrix Style

Same as the cool matrix style command ( http://www.commandlinefu.com/commands/view/3652/matrix-style ), except replacing the printed character with randomness. The command mentioned is much faster and thus more true to the matrix. However, mine can be optimized, but I wasted ... i mean spent enough time on it already

List of macros defined by gcc

Lists all macros and their values defined by gcc.

Open Remote Desktop (RDP) from command line and connect local resources

The above command will open a Remote Desktop connection from command line, authenticate using default username and password (great for virtual machines; in the exampe above it's administrator:password), create a shared folder between your machine and the other machine and configure resolution to best fit your desktop (I don't like full screen because it make the desktop panels to disappear). The command will run in the background, and expect to receive parameters. You should enter hostname or IP address as a parameter to the command, and can also override the defaults parameters with your own.

Find removed files still in use via /proc

Oracle DBA remove some logfiles which are still open by the database and he is complaining the space has not been reclaimed? Use the above command to find out what PID needs to be stopped. Or alternatively recover the file via: $ cp /proc/pid/fd/filehandle /new/file.txt

View and review the system process tree.

The "pstree" command uses special line-drawing characters. However, when piped into the "less" pager, these are normally disabled.

Don't like the cut command? Tired of typing awk '{print $xxx}', try this

Manipulate the metadata when the photo was taken, this will shift with +15hours + 30min

Join lines and separate with spaces

Read vmargs.txt, which is a text file that could either be DOS-style (\r\n) or UNIX-style (\n) line endings and join the lines with a space separator. Can this be shortened/made more elegant?

Create a bash script from last commands

In order to write bash-scripts, I often do the task manually to see how it works. I type ### at the start of my session. The function fetches the commands from the last occurrence of '###', excluding the function call. You could prefix this with a here-document to have a proper script-header. Delete some lines, add a few variables and a loop, and you're ready to go. This function could probably be much shorter...

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Commands using comm (11)

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