Commands using read sorted by votes

Commands using read (340)

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Reorder file with max 100 file per folder

Smaller Code Better Runtime
This is sample output - yours may be different.
0

find files/ -type f | while read line; do if [ $((i++%100)) -eq 0 ]; then mkdir $((++folder)); fi; cp $line $folder/; done

sraeder · 2011-02-13 00:25:48 3
a simple interactive tool to convert Simplified Chinese (typed by pinyin) to Traditional Chinese 简繁中文转换

a simple interactive tool to convert Simplified Chinese (typed by pinyin) to Traditional Chinese Show Sample Output
This is sample output - yours may be different.
```
Simplied Chinese:
&#40857;&#30340;&#20256;&#20154;
Traditional Chinese:
&#40845;&#30340;&#20659;&#20154;
&#31616;&#32321;&#20013;&#25991;&#36716;&#25442;
Traditional Chinese:
&#31777;&#32321;&#20013;&#25991;&#36681;&#25563;
```
0

echo "Simplied Chinese:"; while read -r line; do echo "Traditional Chinese:"; echo $line | iconv -f utf8 -t gb2312 | iconv -f gb2312 -t big5 | iconv -f big5 -t utf8; done

dexterhu · 2011-03-11 12:26:25 15
Recursive script to find all epubs in the current dir and subs, then convert to mobi using calibre's ebook-convert utility

finds all epub files in the current directory and all child directories and converts them to .mobi format. all of the ebook-convert -options are optional; the only parameters you are required to pass are the incoming file and the outgoing file, with the extension. Has been tested on Ubuntu 10.10
This is sample output - yours may be different.
0

find $PWD -type d | while read "D"; do cd "$D"; for filename in *.epub;do ebook-convert "$filename" "${filename%.epub}.mobi" --prefer-author-sort --output-profile=kindle --linearize-tables --smarten-punctuation --asciiize;done ;done

rsimpson · 2011-04-19 15:51:50 9
flush stdin in bash
This is sample output - yours may be different.
0

read -t 0.1 -N 255

maurol · 2011-05-19 19:48:42 13
Find .java files with high complexity (counting curly braces)
This is sample output - yours may be different.
0

find src/ -name "*.java" | while read f; do echo -n "$f "; cat "$f" | tr -dc '{}'; echo; done | awk '{ print length($2), $1 }' | sort -n

mindsocket · 2011-07-21 01:25:31 8
split a string (2)
This is sample output - yours may be different.
0

read VAR1 VAR2 VAR3 <<< aa bb cc; echo $VAR2

h3xx · 2011-07-24 18:56:30 3
find broken symbolic links

find broken symbolic links Show Sample Output
This is sample output - yours may be different.
```
lrwxrwxrwx 1 nobody nobody 43 2010-03-15 13:00 /mnt/retorn -> /opt/retorn
```
0

find . -type l | (while read FN ; do test -e "$FN" || ls -ld "$FN"; done)

pathcl · 2011-08-02 14:48:47 5
delete local *and* remote git repos if merged into local master

attempts to delete all local branches. git will fail on any branches not fully merged into local master, so don't worry about losing work. git will return the names of any successfully deleted branches. Find those in the output with grep, then push null repositories to the corresponding names to your target remote. assumes: - your local and remote branches are identically named, and there's nothing extra in the remote branch that you still want - EDIT: you want to keep your local master branch
This is sample output - yours may be different.
0

git branch | cut -c3- | grep -v "^master$" | while read line; do git branch -d $line; done | grep 'Deleted branch' | awk '{print $3;}' | while read line; do git push <target_remote> :$line; done

gocoogs · 2011-08-13 16:58:34 7
Set executable permissions only to executable files

If you make a mess (like I did) and you removed all the executable permissions of a directory (or you set executable permissions to everything) this can help. It supports spaces and other special characters in the file paths, but it will work only in bash, GNU find and GNU egrep. You can complement it with these two commands: 1. add executable permission to directories: find . type d -print0 | xargs -0 chmod +x 2. and remove to files: find . type d -print0 | xargs -0 chmod -x Or, in the same loop: while IFS= read -r -u3 -d $'\0' file; do case $(file "$file" | cut -f 2- -d :) in :*executable*|*ELF*|*directory*) chmod +x "$file" ;; *) chmod -x "$file" ;; esac || break done 3< <(find . -print0) Ideas stolen from Greg's wiki: http://mywiki.wooledge.org/BashFAQ/020
This is sample output - yours may be different.
0

while IFS= read -r -u3 -d $'\0' file; do file "$file" | egrep -q 'executable|ELF' && chmod +x "$file"; done 3< <(find . -type f -print0)

keymon · 2011-08-18 15:37:23 13
Print a bar graph

WIDTHL=10 and WIDTHR=60 are setting the widths of the left and the right column/bar. BAR="12345678" etc. is used to create a 80 char long string of "="s. I didn't know any shorter way. If you want to pipe results into it, wrap the whole thing in ( ... ) I know that printing bar graphs can be done rather easily by other means. Here, I was looking for a Bash only variant. Show Sample Output
This is sample output - yours may be different.
```
$ cat dataset.dat
Irene     10
Karen     37
Andreas   41
Beatrice  23
$ SCALE=1; WIDTHL=10; WIDTHR=60; BAR="12345678"; BAR="${BAR//?/==========}"; while read LEFT RIGHT rest ; do RIGHT=$((RIGHT/SCALE)); printf "%${WIDTHL}s: %-${WIDTHR}s\n" "${LEFT:0:$WIDTHL}" "|${BAR:0:$RIGHT}*"; done < dataset.dat
     Irene: |==========*
     Karen: |=====================================*
   Andreas: |=========================================*
  Beatrice: |=======================*
```
0

SCALE=3; WIDTHL=10; WIDTHR=60; BAR="12345678"; BAR="${BAR//?/==========}"; while read LEFT RIGHT rest ; do RIGHT=$((RIGHT/SCALE)); printf "%${WIDTHL}s: %-${WIDTHR}s\n" "${LEFT:0:$WIDTHL}" "|${BAR:0:$RIGHT}*"; done < dataset.dat

andreasS · 2011-08-22 19:35:21 7
Get duration of an audio file in seconds.
This is sample output - yours may be different.
0

get_duration () { IFS=.: read -r _ h m s _ < <(ffmpeg -i "$1" 2>&1 | grep Duration);echo $(( h * 3600 + m * 60 + s )); }

RanyAlbeg · 2011-08-28 15:02:42 5
encrypt sensitive image using password

Do not use JPEG, GIF, or any other 'lossy' image encoding with Encryption
This is sample output - yours may be different.
0

read -s PASS; echo $PASS | convert sensitive.jpg -encipher - -depth 8 png24:hidden.png

kev · 2011-11-25 18:15:23 11
Tracklist reaplace backspace to '-'

for music file of mp3.zing.vn Show Sample Output
This is sample output - yours may be different.
```
Gui-Ngan-Loi-Yeu-Tuan-Hung.mp3
Heal-The-World-Michael-Jackson.mp3
Khong-Tin-Mot-Som-Mai-Binh-Yen.mp3
Kisses-and-Cake-John-Powell.mp3
Thu-Cuoi-Yanbi-ft.-Mr-T.mp3
Wait-For-You-X4-Band.mp3
```
0

ls|grep .mp3 >list.txt; while read line; do newname=`echo $line|sed 's/\ /-/g'|sort`; newname=`echo $newname|tr -s '-' `; echo $newname; echo $newname>> tracklist.txt;mv "$line" "$newname"; done <list.txt; rm list.txt

hieuht · 2012-02-16 08:33:14 12
Kill all threads from a MySQL user

Kills all the threads from the user provided in the WHERE request. Can be refined through the SQL request, of course, see http://dev.mysql.com/doc/refman/5.1/en/processlist-table.html for the available columns.
This is sample output - yours may be different.
0

mysql -BNe "SELECT id FROM processlist WHERE user = 'redmine';" information_schema | while read id; do mysqladmin kill $id; done

anarcat · 2012-03-09 17:37:23 7
Write over previous line in bash
This is sample output - yours may be different.
0

seq 1 1000000 | while read i; do echo -en "\r$i"; done

evandrix · 2012-03-15 14:13:04 8
List users in a group

I can't find the lid command on my system, there is also another complied program: http://xyne.archlinux.ca/projects/lsgrp/
This is sample output - yours may be different.
0

lsgrp() { read GID USERS <<< "$(grep "^$1:" /etc/group | cut -d: -f3,4 | tr ':,' ' ')" ; echo -e "${USERS// /\n}" | egrep -v "^($1)?$" ; egrep :[0-9]+:$GID: /etc/passwd | cut -d: -f1 ; }

livibetter · 2012-03-16 09:57:33 3
Short log format of Subversion history

Emulate (more or less) Git equivalent of git log --format='tformat:%h %an (%cr) %s' Show Sample Output
This is sample output - yours may be different.
```
r1238354 bodewig (2012-01-31 11:01) help dealing with the case where BSF is there but JavaScript support is not - the current build failure in Gump
r1237442 bodewig (2012-01-29 20:58) another readablilty tweak
r1237438 bodewig (2012-01-29 20:49) extract handling of -source 1.1 and 1.2
```
0

svnll(){svn log "$@"|( read; while true; do read h||break; read; m=""; while read l; do echo "$l" | grep -q '^[-]\+$'&&break; [ -z "$m" ] && m=$l; done; echo "$h % $m" | sed 's#$.*$ | $.*$ | $[-0-9 :]\{16\}$.* % $.*$#\1 \2 (\3) \4#'; done)}

vhotspur · 2012-03-25 20:39:05 3
process lister/killer - no pgrep and pkill

proc lister usage: p proc killer usage: p patt [signal] uses only ps, grep, sed, printf and kill no need for pgrep/pkill (not part of early UNIX) _p(){ ps ax \ |grep $1 \ |sed ' /grep.'"$1"'/d' \ |while read a;do printf ${a%% *}' '; printf "${a#* }" >&2; printf '\n'; done; } p(){ case $# in 0) ps ax |grep .|less -iE; ;; 1) _p $1; ;; [23]) _p $1 2>/dev/null \ |sed '/'"$2"'/!d; s,.*,kill -'"${3-15}"' &,'|sh -v ;; esac; } alas, can't get this under 255 chars. flatcap? Show Sample Output
This is sample output - yours may be different.
0

_p(){ ps ax |grep $1 |sed '/grep.'"$1"'/d' |while read a;do printf ${a%% *}' ';printf "${a#* }" >&2;printf '\n';done;}

argv · 2012-04-01 19:45:17 3
w/o pgrep/pkill

proc lister usage: p proc killer usage: p patt [signal] uses only ps, grep, sed, printf and kill no need for pgrep/pkill (not part of early UNIX) _p(){ ps ax \ |grep $1 \ |sed ' /grep.'"$1"'/d' \ |while read a;do printf ${a%% *}' '; printf "${a#* }" >&2; printf '\n'; done; } p(){ case $# in 0) ps ax |grep .|less -iE; ;; 1) _p $1; ;; [23]) _p $1 2>/dev/null \ |sed '/'"$2"'/!d; s,.*,kill -'"${3-15}"' &,'|sh -v ;; esac; } alas, can't get this under 255 chars. flatcap? Show Sample Output
This is sample output - yours may be different.
0

_p(){ ps ax |grep $1 |sed '/grep.'"$1"'/d' |while read a;do printf ${a%% *}' ';printf "${a#* }" >&2;printf '\n';done;}

argv · 2012-04-01 19:46:19 5
BW gradient
This is sample output - yours may be different.
0

yes "$(seq 232 255;seq 254 -1 233)" | while read i; do printf "\x1b[48;5;${i}m\n"; sleep .01; done

hogofogo · 2012-04-03 06:41:43 4
Kill all background jobs

List background jobs, grep their number - not process id - and then kill them Show Sample Output
This is sample output - yours may be different.
```
[1]    24167 terminated  ./test
[4]  - 24201 terminated  ./test
[2]    24184 terminated  ./test                                                                                          
[3]  - 23062 terminated  ./test
[5]  + 24218 terminated  ./test
```
0

jobs | grep -o "[0-9]" | while read j; do kill %$j; done

haggen · 2012-04-12 17:29:58 6
Prompt the user for input of y or n, wait for input then continue.
This is sample output - yours may be different.
0

read -p "Question that you want an answer to?" yn

jfreak53 · 2012-04-15 20:46:58 3

Pretty print all of the Linux vm sysctls for your viewing pleasure

Sometimes you want to see all of the systcls for a given $thing. I happened to need to easily look at all of the vm sysctls between two boxes and compare them. This is what I came up with. Show Sample Output

find /proc/sys/vm -maxdepth 1 -type f | while read i ; do printf "%-35s\t%s\n" "$i" "$(<$i)" ; done | sort -t/ -k4

SEJeff · 2012-05-25 16:34:16 7

highlight chars or words in program output

save as shell script and pipe your command output Show Sample Output
This is sample output - yours may be different.
```
#!/bin/zsh
SHL='\\e[0;31m'
EHL='\\e[0m'
while read line; do
  TEXT=$line
  for SSTR in $*; do
    TEXT=$(echo $TEXT | sed -e "s:$SSTR:${SHL}${SSTR}${EHL}:g")
  done
  echo -e $TEXT
done
$ echo foobarbaz | highlight a z
foobarbaz
    ^  ^^
```
0

#!/bin/zsh SHL='\\e[0;31m' EHL='\\e[0m' while read line; do TEXT=$line for SSTR in $*; do TEXT=$(echo $TEXT | sed -e "s:$SSTR:${SHL}${SSTR}${EHL}:g") done echo -e $TEXT done

steigr · 2012-06-06 12:57:50 3
Revert all modified files in an SVN repo

This command allows you to revert every modified file one-by-one in a while loop, but also after "echo $file;" you can do any sort of processing you might want to add before the revert happens. Show Sample Output
This is sample output - yours may be different.
```
my/files.txt
Reverted 'my/files.txt'
```
0

svn status | grep "^M" | while read entry; do file=`echo $entry | awk '{print $2}'`; echo $file; svn revert $file; done

wsams · 2012-06-17 16:01:06 9
‹ First < 7 8 9 10 11 > Last ›

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Get information about libraries currently installed on a system.

This command is very helpful when we need to duplicate a test scenario and first we want to find out the installed libraries together with the version and release numbers and architecture. (look example) Command can be tuned by choosing just the names of libraries we are interested in. For example glibc and gcc.

recursive search and replace old with new string, inside files

This command find all files in the current dir and subdirs, and replace all occurances of "oldstring" in every file with "newstring".

Give all those pictures the same name format, trailing zeros please for the right order, offset to merge different collections of pictures

When you have different digital cameras, different people, friends and you want to merge all those pictures together, then you get files with same names or files with 3 and 4 digit numbers etc. The result is a mess if you copy it together into one directory. But if you can add an offset to the picture number and set the number of leading zeros in the file name's number then you can manage. OFFS != 0 and LZ the same as the files currently have is not supported. Or left as an exercise, hoho ;) I love NF="${NF/#+(0)/}",it looks like a magic bash spell.

lotto generator

Extract a bash function

I often need to extract a function from a bash script and this command will do it.

Show this month's calendar, with today's date highlighted

Explanation: * The date command evaluated to today's date with blank padded on the left if single digit * The grep command search and highlight today's date * The --before-context and --after-context flags displays up to 6 lines before and after the line containing today's date; thus completes the calendar. I have tested this command on Mac OS X Leopard and Xubuntu 8.10

Delete an IPtable rules based on row number

Convert seconds to [DD:][HH:]MM:SS

Converts any number of seconds into days, hours, minutes and seconds. sec2dhms() { declare -i SS="$1" D=$(( SS / 86400 )) H=$(( SS % 86400 / 3600 )) M=$(( SS % 3600 / 60 )) S=$(( SS % 60 )) [ "$D" -gt 0 ] && echo -n "${D}:" [ "$H" -gt 0 ] && printf "%02g:" "$H" printf "%02g:%02g\n" "$M" "$S" }

Benchmark SQL Query

Benchmark a SQL query against MySQL Server. The example runs the query 10 times, and you get the average runtime in the output. To ensure that the query does not get cached, use `RESET QUERY CACHE;` on top in the query file.

Search and play MP3 from Skreemr

This use the Screemr search engine to play mp3 songs

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Commands using read (340)

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