Commands using read sorted by votes

Commands using read (340)

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List files in tarballs

This script will list all the files in the tarballs present on any folder or subfolder of the provided path. The while loop is for echoing the file name of the tarball before listing the files, so the tarball can be identified
This is sample output - yours may be different.
-2

find <path> -name "*.tgz" -or -name "*.tar.gz" | while read file; do echo "$file: "; tar -tzf $file; done

polaco · 2009-11-10 20:39:04 36
Remove current directory

CHANGELOG Version 1.1 removedir () { echo "You are about to delete the current directory $PWD Are you sure?"; read human; if [[ "$human" = "yes" ]]; then blah=$(echo "$PWD" | sed 's/ /\\ /g'); foo=$(basename "$blah"); rm -Rf ../$foo/ && cd ..; else echo "I'm watching you" | pv -qL 10; fi; } BUG FIX: Folders with spaces Version 1.0 removedir () { echo "You are about to delete the current directory $PWD Are you sure?"; read human; if [[ "$human" = "yes" ]]; then blah=`basename $PWD`; rm -Rf ../$blah/ && cd ..; else echo "I'm watching you" | pv -qL 10; fi; } BUG FIX: Hidden directories (.dotdirectory) Version 0.9 rmdir () { echo "You are about to delete the current directory $PWD. Are you sure?"; read human; if [[ "$human" = "yes" ]]; then blah=`basename $PWD`; rm -Rf ../$blah/ && cd ..; else echo "I'm watching you" | pv -qL 10; fi; } Removes current directory with recursive and force flags plus basic human check. When prompted type yes 1. [user@host ~]$ ls foo bar 2. [user@host ~]$ cd foo 3. [user@host foo]$ removedir 4. yes 5. rm -Rf foo/ 6. [user@host ~]$ 7. [user@host ~]$ ls bar Show Sample Output
This is sample output - yours may be different.
```
#### Use example ####
[user@host Downloads]$ wtzc http://raoulito.info/plugins/pidgin_screenshot/pidgin-sendscreenshot-0.6-3.tar.gz
[user@host pidgin-sendscreenshot-0.6-3]$ ls
aclocal.m4    config.h.in   INSTALL              m4           README
AUTHORS       config.sub    install-sh           Makefile.am  src
build-aux     configure     intltool-extract.in  Makefile.in  VERSION
ChangeLog     configure.ac  intltool-merge.in    missing
config        COPYING       intltool-update.in   NEWS
config.guess  depcomp       ltmain.sh            po
[user@host pidgin-sendscreenshot-0.6-3]$ removedir
You are about to delete the current directory /home/user/Downloads/pidgin-sendscreenshot-0.6-3/ Are you sure?
yes
[user@host Downloads]$
```
-2

removedir () { echo "Deleting the current directory $PWD Are you sure?"; read human; if [[ "$human" = "yes" ]]; then blah=$(echo "$PWD" | sed 's/ /\\ /g'); foo=$(basename "$blah"); rm -Rf ../$foo/ && cd ..; else echo "I'm watching you" | pv -qL 10; fi; }

oshazard · 2010-01-17 11:34:38 31
Individually compress each file in a directory

Compresses each file individually, creating a $fileneame.tar.gz and removes the uncompressed version, usefull if you have lots of files and don't want 1 huge archive containing them all. you could replace ls with ls *.pdf to just perform the action on pdfs for example.
This is sample output - yours may be different.
-2

ls | while read filename; do tar -czvf "$filename".tar.gz "$filename"; rm "$filename"; done

Thingymebob · 2010-03-29 08:10:38 8
Automatd ssh public key setup without ssh-copy-id

Some servers don't have ssh-copy-id, this works in those cases. It will ask for the destination server, this can be IP, hostname, or user@hostname if different from current user. Ssh keygen will let you know if a pubkey already exists on your system and you can opt to not overwrite it.
This is sample output - yours may be different.
-2

echo 'Host or User@Host?:'; read newserver && ssh-keygen -N "" -t rsa -f ~/.ssh/id_rsa ; ssh $newserver cat <~/.ssh/id_rsa.pub ">>" ~/.ssh/authorized_keys ; ssh $newserver

alf · 2010-05-07 06:24:53 4
Show all cowsay's available cowfiles
This is sample output - yours may be different.
-2

cowsay -l | sed '1d;s/ /\n/g' | while read f; do cowsay -f $f $f;done

fizz · 2010-09-06 03:40:42 4
add title and alt-text to your collection of xkcd comics

full command: for fn in xkcd*.png xkcd*.jpg; do; echo $fn; read xw xh <<<$(identify -format '%w %h' $fn); nn="$(echo $fn | sed 's/xkcd-$[0-9]\+$-.*/\1/')"; wget -q -O xkcd-${nn}.json http://xkcd.com/$nn/info.0.json; tt="$(sed 's/.*"title": "$[^"]*$", .*/\1/' xkcd-${nn}.json)"; at="$(sed 's/.*alt": "$.*$", .*/\1/' xkcd-${nn}.json)"; convert -background white -fill black -font /usr/share/fonts/truetype/freefont/FreeSansBold.ttf -pointsize 26 -size ${xw}x -gravity Center caption:"$tt" tt.png; convert -background '#FFF9BD' -border 1x1 -bordercolor black -fill black -font /usr/share/fonts/truetype/freefont/FreeSans.ttf -pointsize 16 -size $(($xw - 2))x -gravity Center caption:"$at" at.png; th=$(identify -format '%h' tt.png); ah=$(identify -format '%h' at.png); convert -size ${xw}x$(($xh+$th+$ah+5)) "xc:white" tt.png -geometry +0+0 -composite $fn -geometry +0+$th -composite at.png -geometry +0+$(($th+$xh+5)) -composite ${fn%\.*}_cmp.png; echo -e "$fn $nn $xw $xh $th $ah \n$tt \n$at\n"; done this assumes that all comics are saved as xkcd-[number]-[title].{png|jpg}. it will then download the title and alt-text, create pictures from them, and put everything together in a new png-file. it's not perfect, but it worked for nearly all my comics. it uses the xkcd-json-interface. though it's poorly written, it doesn't completely break on http://xkcd.com/859/
This is sample output - yours may be different.
-2

for fn in xkcd*.png xkcd*.jpg; do echo $fn; read xw xh <<<$(identify -format '%w %h' $fn); nn="$(echo $fn | sed 's/xkcd-$[^-]\+$-.*/\1/')"; wget -q -O xkcd-${nn}.json http://xkcd.com/$nn/info.0.json; tt="$(sed 's/.*"title": "$[^"]\+$",.*/\1/' ...

fpunktk · 2012-01-06 20:26:11 8
Quickly re-launch your script (python for example)

Very useful for test a script. After launch this command, you only have to press ENTER for launch your script again. I work with screen and tape ENTER instead of '!!'+ENTER If you break your script with CTRL-C, it will wait for press ENTER and will re-launch You can write like it : while read -p "Press ENTER" ; do python ; done
This is sample output - yours may be different.
-2

while read ; do python <script> ; done

Zulu · 2012-02-23 22:29:09 10
Prefix file contents with filename
This is sample output - yours may be different.
-2

for i in $(seq 1 20); do while read line; do echo "$i: $line"; done<$i.py; done

evandrix · 2012-03-09 01:06:50 3
Process each item with multiple commands (in while loop)
This is sample output - yours may be different.
-2

find -maxdepth 1 -type d | while read dir; do echo $dir; echo cmd2; done

techie · 2013-04-29 10:15:13 6
make soft links from a downloaded bin folder
This is sample output - yours may be different.
-2

ls | while read line; do ln -s "$(pwd)/$line" "/usr/bin/$line"; done

rawm · 2015-03-24 06:47:56 10
do mvn clean in subdirs to free disk space

this command is used to locate all pom.xml files, access the dir and do a mvn clean, but I do recommend you to disable network interfaces to not download dependencies packages to be faster. Show Sample Output
This is sample output - yours may be different.
```
...
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
...
```
-2

find -name pom.xml | while read f; do cd $(dirname "$f"); mvn clean; cd -; done;

glaudiston · 2015-04-15 21:24:49 13
Cherry-pick range of commits, starting from the tip of 'master', into 'preview' branch

Creating feature-branches off master, and trying to merge them in an integration branch (preview), sometimes causes conflicts because the feature-branch might hold changes from 'master' that aren't on preview yet. So this ensures only the commits added to the feature-branch are moved to integration (preview). Note: This assumes you're currently on the feature-branch. Adjust 'master/preview' branch names to suit your environment.
This is sample output - yours may be different.
-2

git rev-list --reverse --topo-order master... | while read rev; do git checkout preview; git cherry-pick $rev || break; done

shadyvb · 2015-04-23 14:28:06 11
rm all files you grep

This command deletes all files in all subfolders if their name or path contains "deleteme". To dry-run the command without actually deleting files run: find . | grep deleteme | while read line; do echo rm $line; done
This is sample output - yours may be different.
-3

find . | grep deleteme | while read line; do rm $line; done

tec · 2009-02-18 00:55:57 8
Convert *.mp3 files to *.wav for recording audio cd's
This is sample output - yours may be different.
-3

ls |while read line ; do mpg321 -w "$line.wav" "$line" ; done

headshot · 2009-02-18 21:04:52 6
Alternative size (human readable) of directories (biggest last)

Found this one little more for me. This one removes the perl dependency (from command 2535). Source for command : http://www.earthinfo.org/linux-disk-usage-sorted-by-size-and-human-readable/ Show Sample Output
This is sample output - yours may be different.
```
/usr/share/compiz $ duf *
4k	text.xml
8k	video.xml
12k	session.xml
40k	colorfilter.xml
92k	staticswitcher.xml
184k	shift.xml
356k	animation.xml
1M	reflection.png
```
-3

function duf { du -sk "$@" | sort -n | while read size fname; do for unit in k M G T P E Z Y; do if [ $size -lt 1024 ]; then echo -e "${size}${unit}\t${fname}"; break; fi; size=$((size/1024)); done; done; }

marssi · 2009-07-02 19:56:36 6
Convert all .wav to .mp3
This is sample output - yours may be different.
-3

ls *.wav | while read f; do lame "$f" -o "$(echo $f | cut -d'.' -f1)".mp3; done;

glaudiston · 2010-02-22 14:10:39 7
Replace spaces in filename

all files in the directory get moved, in doing so the new name of the file is the original name with out spaces (using translate command)
This is sample output - yours may be different.
-3

ls | while read -r FILE; do mv -v "$FILE" `echo $FILE | tr -d ' '`; done

IgnitionWeb · 2010-08-14 14:10:48 33
Listen and sort your music, with prompt for deleting

Old drive with lots of music or unsorted drive? This command will play all mp3 files in a folder and after playing one song or pressing q, it will ask you if you want to delete the file.
This is sample output - yours may be different.
-3

for i in $(ls *.mp3); do mplayer $i && echo "delete it? [y/n]" && read trash && if [ "$trash" == "y" ]; then rm $i; fi; do

wibbel4 · 2013-12-23 20:09:56 9
Remove executable bit from all files in the current directory recursively, excluding other directories

I hate -exec with find, and this pattern quickly expands to other tasks.
This is sample output - yours may be different.
-4

find . -type f | while read f; do chmod -x "$f"; done

alesplin · 2009-11-09 04:30:44 3
Press Any Key to Continue

how to finish command or script without any output Show Sample Output
This is sample output - yours may be different.
```
root@ubuserver:~# read enterKey

root@ubuserver:~#
```
-4

read enterKey

bbmarek · 2009-12-29 00:18:32 7
Prepend string to filename

Prepends all directory items with "prependtext"
This is sample output - yours may be different.
-4

ls | while read -r FILE; do mv -v "$FILE" `echo "prependtext$FILE" `; done

IgnitionWeb · 2010-08-14 14:19:18 13
Replace spaces with tabs & format file source recursively within a directory

Recursively find php files and replace tab characters with spaces. Options: "\*.php" -- replace this with the files you wish to find "expand" -- replace tabs with spaces (use "unexpand" to replace spaces with tabs) "-t4" -- tabs represent 4 spaces Note: The IFS="" in the middle is to prevent 'read' from eating leading/trailing whitespace in filenames.
This is sample output - yours may be different.
-4

find . -type f -name \*.php | while IFS="" read i; do expand -t4 "$i" > "$i-"; mv "$i-" "$i"; done

flatcap · 2011-04-08 12:53:14 50
Find top 5 big files

This command is more robust because it handles spaces, newlines and control characters in filenames. It uses printf, not ls, to determine file size.
This is sample output - yours may be different.
-4

count=0;while IFS= read -r -d '' line; do echo "${line#* }"; ((++count==5)) && break; done < <(find . -type f -printf '%s %p\0' | sort -znr)

sharfah · 2013-03-19 17:19:26 4
copy files listed in a text file

If you want to copy all files listed (with full path) in a text-file (i.e. cmus playlist.pl) to a certain directory use this nice oneliner... Credits goes to RiffRaff: http://www.programmingforums.org/post242527-2.html
This is sample output - yours may be different.
-4

(while read fn; do; cp "$fn" $DESTINATION\.; done<filename.txt)

jameskirk · 2013-05-05 16:29:51 11
Recursively grep a subdirectory for a list of files

This command will grep the entire directory looking for any files containing the list of files. This is useful for cleaning out your project of old static files that are no longer in use. Also ignores .svn directories for accurate counts. Replace 'static/images/' with the directory containing the files you want to search for. Show Sample Output
This is sample output - yours may be different.
```
select-button.gif [1]
select-top.png [1]
tab.png [0]
Thumbs.db [0]
```
-5

ls -1 static/images/ | while read line; do echo -n $line' '[; grep -rc $line *|grep -v ".svn"|cut -d":" -f2|grep -vc 0| tr "\n" -d; echo -n ]; echo ; done

psytek · 2009-03-20 20:33:36 14
‹ First < 11 12 13 14 >

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dd with progress bar and statistics

This command utilizes 'pv' to show dd's progress. Notes on use with dd: -- dd block size (bs=...) is a widely debated command-line switch and should usually be between 1024 and 4096. You won't see much performance improvements beyond 4096, but regardless of the block size, dd will transfer every bit of data. -- pv's switch, '-s' should be as close to the size of the data source as possible. -- dd's out file, 'of=...' can be anything as the data within that file are the same regardless of the filename / extension.

find directory with most inodes/files

Find which directory in one filesystem that contains most inodes or files.

convert wav files to ogg

cd to the folder containing the wav files and convert them all to ogg format. in my sample output i use the -a and -l flags to set the author and album title. to get the oggenc program in ubuntu linux run: sudo apt-get install oggenc

Check a nfs mountpoint and force a remount if it does not reply after a given timeout.

Based on the execute with timeout command in this site. A more complex script: #!/bin/sh # This script will check the avaliability of a list of NFS mount point, # forcing a remount of those that do not respond in 5 seconds. # # It basically does this: # NFSPATH=/mountpoint TIMEOUT=5; perl -e "alarm $TIMEOUT; exec @ARGV" "test -d $NFSPATH" || (umount -fl $NFSPATH; mount $NFSPATH) # TIMEOUT=5 SCRIPT_NAME=$(basename $0) for i in $@; do echo "Checking $i..." if ! perl -e "alarm $TIMEOUT; exec @ARGV" "test -d $i" > /dev/null 2>&1; then echo "$SCRIPT_NAME: $i is failing with retcode $?."1>&2 echo "$SCRIPT_NAME: Submmiting umount -fl $i" 1>&2 umount -fl $i; echo "$SCRIPT_NAME: Submmiting mount $i" 1>&2 mount $i; fi done

Show a zoomable world map

show a zoomable world map

Regnerate Exif thumbnail.

list all file extensions in a directory

... plus do a sort according frequency

'hpc' in the shell - starts a maximum of n compute commands modulo n controlled in parallel, using make

this oneliner uses make and it's jobserver for parallel execution of your script. The '-j' flag for make defines number of subprocesses to launch, '-f' tells make use stdin instead of Makefile. Also make have neat flag '-l', which "Specifies that no new jobs (commands) should be started if there are others jobs running and the load is at least load (a floating-point number)." Also you can use plain Makefile, for better readability: targets = $(subst .png,.jpg,$(wildcard *.png)) $(targets): echo convert $(subst .jpg,.png,$@) $@ all : $(targets)

Outputs a sorted list of disk usage to a text file

Recursively searches current directory and outputs sorted list of each directory's disk usage to a text file.

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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Commands using read (340)

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