Commands using read | commandlinefu.com

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Terminal - Commands using read - 266 results

time vmware-cmd -l | while read x; do printf "$x"; vmware-cmd "$x" removesnapshots; done

2009-02-26 18:51:29

User: jcgam69

Functions: printf read time

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remove all snapshots from all virtual machines in vmware esx

Old snapshots can cause problems. It's best to remove them when finished. I use this script to remove all snapshots. The "while read" command is necessary because my vm names contain spaces. The "time" command reports how long the process runs.

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

2009-02-22 10:05:50

User: mikeda

Functions: echo read

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split a string (2)

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while read line; do echo "$(date),$(hostname),$line"; done < somefile.txt

2009-02-19 18:48:12

User: nottings

Functions: echo read

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read a file line by line and perform some operation on each line

see sample output

while true; do read i; echo $[$i]; done

2009-02-18 23:13:09

User: mulad

Functions: echo read

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Simple calculator

The $[...] block in bash and zsh will let you do math.

echo $[6*7]

This is the same as using $((...)), which also works in ksh. Of course, this is a simple, dumb wrapper and doesn't allow floating-point.

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

2009-02-18 21:04:52

User: headshot

Functions: ls mpg321 read

-3

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Convert *.mp3 files to *.wav for recording audio cd's

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unset files i; set -f; O=$IFS; while IFS= read -r -d $'\0' files[i++]; do :; done < <(find . -name '*.avi' -print0) && IFS=$O; set +f && echo "Running: mplayer \"${files[ $(( $RANDOM % ${#files[@]} )) ]}\""

2009-02-18 16:53:57

User: DEinspanjer

Functions: echo find read set unset

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Play a random .avi file from a media tree

unsets variables used by the one-liner

sets up the IFS bash variable to not be affected by whitespace and disables extra glob expansion

uses read to slurp the results of the find command into an array

selects an element of the array at random to be passed as an argument to mplayer

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

2009-02-18 00:55:57

User: tec

Functions: find grep read rm

-3

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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

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find . -type f|while read f; do mv $f `echo $f |tr '[:upper:]' '[ :lower:]'`; done

2009-02-17 09:44:38

User: berta

Functions: find mv read

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recursively change file name from uppercase to lowercase (or viceversa)

or, to process a single directory:

for f in *; do mv $f `echo $f |tr '[:upper:]' '[:lower:]'`; done

find . -type f -name \*.c | while read f; do mv $f "`basename $f .c`".C; done

2009-02-17 09:30:43

User: berta

Functions: find mv read

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recursively change file name extensions

or, for a single directory:

for f in *.c; do mv $f "`basename $f .c`".C; done

echo "Set Twitter Status" ; read STATUS; curl -u user:pass -d status="$STATUS" http://twitter.com/statuses/update.xml

2009-02-16 14:34:05

User: ronz0

Functions: echo read

-2

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Improvement of curl + Twitter

Modify the script for your username and password, and save it as a script. Run the script, and enjoy ./tweet

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while read line; do echo -e "$line@mail.com"; done < list.txt

2009-02-11 08:31:01

User: irraz

Functions: echo read

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@mail.com by adding the line in list.txt

Add @mail.com each line of a list

( while read File; do mogrify -resize 1024 -quality 96 $File; done ) < filelist

2009-02-08 02:48:26

User: Corsair

Functions: read

-1

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Change size of lots of image files. File names are read from a text file.

Imagemagick library is used. If image format is not JPEG, the "quality" option should not be issued.

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alias scd='dirs -v; echo -n "select number: "; read newdir; cd -"$newdir"'

2009-02-06 16:44:47

User: aoiaoi

Functions: alias cd echo read

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change to the selected directory for zsh users

'ls -1 *<pattern>* | while read file; do scp $file user@host:/path/; if [[ $? -eq 0 ]]; then rm $file; fi; done'

2009-02-06 00:08:06

User: perrefe

Functions: read rm scp

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Search filenames with given pattern; each one is transfered via scp and if succesfull the file is locally deleted. Ideal for filesystem quick maintenance

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echo -n search\>\ ; read SEARCH_STRING && sed -n "/$SEARCH_STRING/{n;p;n;p;n;p;q}" [file-to-search]

2009-02-05 18:07:23

User: wwest4

Functions: echo read sed

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Customizable Search Context

customizable context searches - if you know sed, this is a basis for more complex context control than grep --context offers

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

2009-02-05 12:01:37

User: pixelbeat

Functions: printf read sleep yes

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cycle through a 256 colour palette

just for fun

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