Commands by nnsense (8)

  • Shows the online version of docker's man related a command

    Docker's local man pages are (often) half of what you have online, so I wanted that as local man. Install lynx and run my oneliner, then use as follows: dockpage Adjust lynx's page width at will Show Sample Output


    0
    dockpage() { lynx -width=180 --dump https://docs.docker.com/v1.11/engine/reference/commandline/$1/ | sed -n '/^Usage/,/On this page/{/On this page/b;p}'; }
    nnsense · 2017-09-18 23:53:34 24
  • Shows only ContainerID, Image, Status and names of running containers.

    Usefull, for example, when many ports are exposed and the docker ps output looks cluttered. Show Sample Output


    0
    alias dockps='docker ps --format "table {{.ID}}\t{{.Image}}\t{{.Status}}\t{{.Names}}"'
    nnsense · 2017-09-18 23:46:47 19
  • Show me just the ip address

    Sometimes it's useful to output just the ip address. Or some other information, changing the "ipv4.addresses" in command. The power of awk! Show all possible "greps" with nmcli connection show [yourInterfaceNameHere] Show Sample Output


    2
    showip() { nmcli connection show $1|grep ipv4.addresses|awk '{print $2}' ; }
    nnsense · 2015-05-13 16:24:28 15
  • Assign function keys to your frequent commands

    This is a common use of bind. Hitting any key after will output the key's character sequence. This makes possible using it into a bind command. So pressing ctrl+v and then F2 will output "^[[12~", once binded every time you'll press the function key F2 it will execute your command. Added the \n to make it execute it as well. Show Sample Output


    1
    bind '"<ctrl+v><functionKey>":"command\n"'
    nnsense · 2015-05-11 17:59:09 12
  • Most used commands from history (without perl)

    I copied this (let's be honest) somewhere on internet and I just made it as a function ready to be used as alias. It shows the 10 most used commands from history. This seems to be just another "most used commands from history", but hey.. this is a function!!! :D Show Sample Output


    1
    mosth() { history | awk '{CMD[$2]++;count++;}END { for (a in CMD)print CMD[a] " " CMD[a]/count*100 "% " a;}' | grep -v "./" | column -c3 -s " " -t | sort -nr | nl | head -n10; }
    nnsense · 2015-05-11 17:41:55 19
  • Listing package man page, services, config files and related rpm of a file, in one alias

    Many times I give the same commands in loop to find informations about a file. I use this as an alias to summarize that informations in a single command. Now with variables! :D Show Sample Output


    2
    fileinfo() { RPMQF=$(rpm -qf $1); RPMQL=$(rpm -ql $RPMQF);echo "man page:";whatis $(basename $1); echo "Services:"; echo -e "$RPMQL\n"|grep -P "\.service";echo "Config files:";rpm -qc $RPMQF;echo "Provided by:" $RPMQF; }
    nnsense · 2015-05-11 16:46:01 13
  • Which .service related this file?

    I use this as an alias to get all .service files related a single installed file/conf (if it has services, of course). For rpm based systems ;) Show Sample Output


    1
    qf2s() { rpm -ql $(rpm -qf $1)|grep -P "\.service"; }
    nnsense · 2015-05-11 16:32:16 9
  • Fast command-line directory browsing

    Not really alternative, just giving a different behavior listing current directory if no directory given.


    1
    cdls() { if [[ $1 != "" ]] ; then cd $1; ls; else ls; fi };
    nnsense · 2015-05-11 15:52:09 12

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Exclude inserting a table from a sql import
Starting with a large MySQL dump file (*.sql) remove any lines that have inserts for the specified table. Sometimes one or two tables are very large and uneeded, eg. log tables. To exclude multiple tables you can get fancy with sed, or just run the command again on subsequently generated files.

Detect illegal access to kernel space, potentially useful for Meltdown detection
Based on capsule8 agent examples, not rigorously tested

FizzBuzz in one line of Bash
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Convert all JPEG images to MP4
Source: http://superuser.com/a/624574

Convert JSON to YAML
Convert JSON to YAML. Note that you'll need to have PyYaml installed.

Reboot as a different OS in Grub
This will reboot as the Grub 2 option.

Listing directory content of a directory with a lot of entries
Ever wanted to get the directory content with 'ls' or 'find' and had to wait minutes until something was printed? Perl to the rescue. The one-liner above(redirected to a file) took less than five seconds to run in a directory with more man 2 million files. One can adapt it to e.g. delete files that match a certain pattern.

backup and synchronize entire remote folder locally (curlftpfs and rsync over FTP using FUSE FS)
connect to a remote server using ftp protocol over FUSE file system, then rsync the remote folder to a local one and then unmount the remote ftp server (FUSE FS) it can be divided to 3 different commands and you should have curlftpfs and rsync installed

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