Commands tagged argument (8)

  • After executing a command with multiple arguments like cp ./temp/test.sh ~/prog/ifdown.sh you can paste any argument of the previous command to the console, like ls -l ALT+1+. is equivalent to ls -l ./temp/test.sh ALT+0+. stands for command itself ('ls' in this case) Simple ALT+. cycles through last arguments of previous commands.


    13
    <ALT>+<.> or <ALT>+<NUM>+<.> or <ALT>+<NUM>,<ALT>+<.>
    aikikode · 2011-03-01 17:41:08 2
  • Bash's history expansion character, "!", has many features, including "!:" for choosing a specific argument (or range of arguments) from the history. The gist is any number after !: is the number of the argument you want, with !:1 being the first argument and !:0 being the command. See the sample output for a few examples. For full details search for "^HISTORY EXPANSION" in the bash(1) man page.    Note that this version improves on the previous function in that it handles arguments that include whitespace correctly. Show Sample Output


    10
    !:n
    hackerb9 · 2013-09-15 03:41:13 3
  • if you want to move with command mv large list of files than you would get following error /bin/mv: Argument list too long alternavite with exec: find /source/directory -mindepth 1 -maxdepth 1 -name '*' -exec mv {} /target/directory \; Show Sample Output


    3
    find /source/directory -mindepth 1 -maxdepth 1 -name '*' -print0 | xargs -0 mv -t /target/directory;
    aysadk · 2020-11-17 12:30:45 192
  • A really fun vim oneliner for auto documenting your option's parsing in your script. # print the text embeded in the case that parse options from command line. # the block is matched with the marker 'CommandParse' in comment, until 'esac' extract_cmdl_options() { # use vim for parsing: # 1st grep the case block and copy in register @p + unindent in the buffer of the file itself # 2nd filter lines which start with --opt or +opt and keep comment on hte following lines until an empty line # 3rd discard changes in the buffer and quit vim -n -es -c 'g/# CommandParse/+2,/^\s\+esac/-1 d p | % d | put p | % -c 'g/^\([-+]\+[^)]\+\))/,/^\(\s\+[^- \t#]\|^$\)/-1 p' \ -c 'q!' $0 } example code:http://snipplr.com/view/25059/display-embeded-comments-for-every-opt-usefull-for-auto-documenting-your-script/ Show Sample Output


    0
    vim -n -es -c 'g/# CommandParse/+2,/^\s\+esac/-1 d p | % d | put p | %<' -c 'g/^\([-+]\+[^)]\+\))/,/^\(\s\+[^- \t#]\|^$\)/-1 p' -c 'q!' $0
    syladmin · 2009-12-19 08:32:00 4
  • If Argument $1 is supplied, assign it to variable. Otherwise continue on.


    0
    [ $1 ] && my_dir=$1
    robinsonaarond · 2011-11-30 15:02:20 2
  • This gets the Nth argument in the last line of your history file. This is useful where history is being written after each command, and you want to use arguments from the previous command in the current command, such as when doing copies/moving directories etc. I wrote this after getting irritated with having to continually type in long paths/arguments. You could also use $_ if all you want is the last argument. Show Sample Output


    0
    function garg () { tail -n 1 ${HISTFILE} | awk "{ print \$$1 }" }
    plasticphyte · 2013-09-10 04:07:46 6

  • 0
    _autoOptions() { local cur=${COMP_WORDS[COMP_CWORD]} COMPREPLY=( $(compgen -W "--fooOption --barOption -f -b" -- $cur) ) ;}; complete -F _autoOptions autoOptions
    totti · 2013-10-16 09:46:54 4
  • This is a alternate command I like to use instead of TOP or HTOP to see what are the processes which are taking up the most memory on a system. It shows the username, process ID, CPU usage, Memory usage, thread ID, Number of threads associated with parent process, Resident Set Size, Virtual Memory Size, start time of the process, and command arguments. Then it's sorted by memory and showing the top 10 with head. This of course can be changed to suit you needs. I have a small system which is why Firefox is taking so much resources. Show Sample Output


    0
    watch -n .8 'ps -eaLo uname,pid,pcpu,pmem,lwp,nlwp,rss,vsz,start_time,args --sort -pmem| head -10'
    ubercoo · 2016-05-11 01:05:53 6

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Show used disk space:

List detailed information about a ZIP archive
list zipfile info in long Unix ``ls -l'' format.

dont log current session to history

Output sound when your computer is downloading something
Outputs pseudo-random sounds to speakers (stereo mode because of -c 2) when there are any kind of network activity.

List your MACs address
The output of ifconfig is localized, using it will fail in non-English environment. "ip" command in iproute2 provides a consistent output and thus is more robust

Show apps that use internet connection at the moment.
This corrects duplicate output from the previous command.

Get a list of Mageia Linux mirrors providing rsync connectivity for Mageia 4 release
Need to find a Mageia Linux mirror server providing Mageia 4 via rsync? Modify the "url=" string for the version you want. This shows i586 which is the 32bit version. If you want the 64bit version it is: url=http://mirrors.mageia.org/api/mageia.4.x86_64.list; wget -q ${url} -O - | grep rsync:

find all writable (by user) files in a directory tree (use 4 for readable, 1 for executable)

Instead of writing a multiline if/then/else/fi construct you can do that by one line
instead of writing: if [[ "$1" == "$2" ]]; then echo "$1 is equal $2" else echo "$1 differs from $2" fi do write: [[ "$1" == "$2" ]] && echo "$1 is equal $2" || echo "$1 differs from $2"

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"


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