Commands using ls (517)


  • 1
    find / -perm +6000 -type f -exec ls -ld {} \;
    aguslr · 2011-10-14 22:19:58 5
  • This will list the files in a directory, then zip each one with the original filename individually. video1.wmv -> video1.zip video2.wmv -> video2.zip This was for zipping up large amounts of video files for upload on a Windows machine.


    1
    ls -1 | awk ' { print "zip "$1".zip " $1 } ' | sh
    kaywhydub · 2011-12-14 20:30:56 6

  • 1
    ls -d $PWD/*
    putnamhill · 2011-12-16 19:12:55 3

  • 1
    ls -d1 $PWD/{.*,*}
    bunam · 2011-12-17 12:25:15 2

  • 1
    ls -d1 $PWD/*
    www · 2011-12-31 14:46:41 3

  • 1
    find <directory> -type f -printf "%T@\t%p\n"|sort -n|cut -f2|xargs ls -lrt
    rik · 2012-03-02 12:51:06 3
  • Here's an annotated version of the command, using full-names instead of aliases. It is exactly equivalent to the short-hand version. # Recursively list all the files in the current directory. Get-ChildItem -Recurse | # Filter out the sub-directories themselves. Where-Object { return -not $_.PsIsContainer; } | # Group the resulting files by their extensions. Group-Object Extension | # Pluck the Name and Count properties of each group and define # a custom expression that calculates the average of the sizes # of the files in that group. # The back-tick is a line-continuation character. Select-Object ` Name, Count, @{ Name = 'Average'; Expression = { # Average the Length (sizes) of the files in the current group. return ($_.Group | Measure-Object -Average Length).Average; } } | # Format the results in a tabular view, automatically adjusted to # widths of the values in the columns. Format-Table -AutoSize ` @{ # Rename the Name property to something more sensible. Name = 'Extension'; Expression = { return $_.Name; } }, Count, @{ # Format the Average property to display KB instead of bytes # and use a formatting string to show it rounded to two decimals. Name = 'Average Size (KB)'; # The "1KB" is a built-in constant which is equal to 1024. Expression = { return $_.Average / 1KB }; FormatString = '{0:N2}' } Show Sample Output


    1
    ls -r | ?{-not $_.psiscontainer} | group extension | select name, count, @{n='average'; e={($_.group | measure -a length).average}} | ft -a @{n='Extension'; e={$_.name}}, count, @{n='Average Size (KB)'; e={$_.average/1kb}; f='{0:N2}'}
    brianpeiris · 2012-03-13 17:58:10 9
  • This will generate the same output without changing the current directory, and filepath will be relative to the current directory. Note: it will (still) fail if your iTunes library is in a non-standard location.


    1
    ls "~/Music/iTunes/iTunes Media/Mobile Applications" > filepath
    minnmass · 2012-05-04 09:51:59 48
  • Nothing too magical here, just uses pngcrush to losslessly compress all your pngs!


    1
    ls *.png | while read line; do pngcrush -brute $line compressed/$line; done
    waffleboi9 · 2012-07-17 20:20:49 5
  • Sometimes I would like to see hidden files, prefix with a period, but some files or folders I never want to see (and really wish I could just remove all together). Show Sample Output


    1
    alias ls='if [[ -f .hidden ]]; then while read l; do opts+=(--hide="$l"); done < .hidden; fi; ls --color=auto "${opts[@]}"'
    expelledboy · 2012-08-12 13:10:23 5

  • 1
    ln -s /base/* /target && ls -l /target
    mattcen · 2012-08-22 11:27:40 5
  • Show the UUID-based alternate device names of ZEVO-related partitions on Darwin/OS X. Adapted from the lines by dbrady at http://zevo.getgreenbytes.com/forum/viewtopic.php?p=700#p700 and following the disk device naming scheme at http://zevo.getgreenbytes.com/wiki/pmwiki.php?n=Site.DiskDeviceNames Show Sample Output


    1
    ls /dev/disk* | xargs -n 1 -t sudo zdb -l | grep GPTE_
    grahamperrin · 2012-10-06 20:19:45 5
  • Substitute for #11720 Can probably be even shorter and easier. Show Sample Output


    1
    ls -l /dev/disk/by-id/ | grep '/sda$' | grep -o 'ata[^ ]*'
    michelsberg · 2013-01-16 17:28:11 7
  • I find it useful, when cleaning up deleting unwanted files to make more space, to list in size order so I can delete the largest first. Note that using "q" shows files with non-printing characters in name. In this sample output (above), I found two copies of the same iso file both of which are immediate "delete candidates" for me. Show Sample Output


    1
    ls -qahlSr # list all files in size order - largest last
    mpb · 2013-03-13 09:52:07 29
  • zsh: list of files sorted by size, greater than 100mb, head the top 5. '**/*' is recursive, and the glob qualifiers provide '.' = regular file, 'L' size, which is followed by 'm' = 'megabyte', and finally '+100' = a value of 100


    1
    ls -Sh **/*(.Lm+100) | tail -5
    khayyam · 2013-03-21 20:22:11 4
  • make usable on OSX with filenames containing spaces. note: will still break if filenames contain newlines... possible, but who does that?!


    1
    svn ls -R | egrep -v -e "\/$" | tr '\n' '\0' | xargs -0 svn blame | awk '{print $2}' | sort | uniq -c | sort -nr
    rymo · 2013-04-10 19:37:53 5
  • Like top, but for files


    1
    watch -d -n 2 'df; ls -FlAt;'
    G2G · 2013-09-17 05:44:47 6
  • Sorts by latest modified files by looking to current directory and all subdirectories Show Sample Output


    1
    find . -name '*pdf*' -print0 | xargs -0 ls -lt | head -20
    fuats · 2013-10-03 21:58:51 9
  • displays a list of all file extensions in current directory and how many files there are of each type of extension in ascending order (case insensitive) Show Sample Output


    1
    ls | tr [:upper:] [:lower:] | grep -oP '\.[^\.]+$' | sort | uniq -c | sort
    icefyre · 2014-01-30 11:37:27 10

  • 1
    npm ls -g|grep "^[&#9500;&#9492;]\(.\+\)\?[&#9516;&#9472;] "
    lucasmezencio · 2014-02-03 21:50:39 7
  • Very quick! Based only on the content sizes and the character counts of filenames. If both numbers are equal then two (or more) directories seem to be most likely identical. if in doubt apply: diff -rq path_to_dir1 path_to_dir2 AWK function taken from here: http://stackoverflow.com/questions/2912224/find-duplicates-lines-based-on-some-delimited-fileds-on-line Show Sample Output


    1
    find . -type d| while read i; do echo $(ls -1 "$i"|wc -m) $(du -s "$i"); done|sort -s -n -k1,1 -k2,2 |awk -F'[ \t]+' '{ idx=$1$2; if (array[idx] == 1) {print} else if (array[idx]) {print array[idx]; print; array[idx]=1} else {array[idx]=$0}}'
    knoppix5 · 2014-02-25 22:50:09 27
  • Tested with GNU and BSD ls. Show Sample Output


    1
    ls -la | grep ^l
    gatopan · 2014-08-11 03:06:48 8
  • With this version, you can list all symlinks in the current directory (no subdirectories), and have it list both the link and the target. Show Sample Output


    1
    ls -l `find ~ -maxdepth 1 -type l -print`
    skittleys · 2015-01-04 02:36:47 7
  • list all txt files order by time, newest first


    1
    ls -lt --time=atime *.txt
    miccaman · 2015-05-21 21:03:44 10
  • Adding course name prefix to lecture pdfs Show Sample Output


    1
    ls *.pdf | while read file; do newfile="CS749__${file}"; mv "${file}" "${newfile}"; done;
    programmer · 2016-04-19 11:04:47 16
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Switch all connected PulseAudio bluetooth devices to A2DP profile
Tries to switch all audio devices to the A2DP profile for optimal sound quality. Useful for bluetooth speakers and headphones that always power up in HSP/HFP mode. Note however that this command is only a shorthand for the GUI, so it cannot fix stubborn BT controllers that leave your device stuck in HSP mode until a manual re-coupling.

Redirect incoming traffic to SSH, from a port of your choosing
Stuck behind a restrictive firewall at work, but really jonesing to putty home to your linux box for some colossal cave? Goodness knows I was...but the firewall at work blocked all outbound connections except for ports 80 and 443. (Those were wide open for outbound connections.) So now I putty over port 443 and have my linux box redirect it to port 22 (the SSH port) before it routes it internally. So, my specific command would be: $iptables -t nat -A PREROUTING -p tcp --dport 443 -j REDIRECT --to-ports 22 Note that I use -A to append this command to the end of the chain. You could replace that with -I to insert it at the beginning (or at a specific rulenum). My linux box is running slackware, with a kernel from circa 2001. Hopefully the mechanics of iptables haven't changed since then. The command is untested under any other distros or less outdated kernels. Of course, the command should be easy enough to adapt to whatever service on your linux box you're trying to reach by changing the numbers (and possibly changing tcp to udp, or whatever). Between putty and psftp, however, I'm good to go for hours of time-killing.

Send pop-up notifications on Gnome
The title is optional. Options: -t: expire time in milliseconds. -u: urgency (low, normal, critical). -i: icon path. On Debian-based systems you may need to install the 'libnotify-bin' package. Useful to advise when a wget download or a simulation ends. Example: $ wget URL ; notify-send "Done"

Block an IP address from connecting to a server
This appends (-A) a new rule to the INPUT chain, which specifies to drop all packets from a source (-s) IP address.

adjust laptop display hardware brightness [non root]

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

get a rough estimate about how much disk space is used by all the currently installed debian packages
The vaule is expressed in megabytes

Sorted list of established destination connections
no need grep. its redundant when awk is present.

Adhoc tar backup
Creates a quick backup with tar to a remote host over ssh.


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