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All commands from sorted by
Terminal - All commands - 12,371 results
convert -quality 40% original_image reduced_image
for L in `echo :$PATH | tr : '\n'`; do F=${L:-"."}/fileName; if [ -f ${F} -o -h ${F} ]; then echo ${F}; break; fi; done
2009-09-11 16:14:36
User: arcege
Functions: echo tr
-1

Searches in order of the directories of $PATH. Stops after finding the entry; looks for only that fileName. Works in Bourne, Korn, Bash and Z shells.

ffmpeg -i input.flv -vhook '/usr/lib/vhook/imlib2.so -c white -x 250 -y H+(-1.8*N+80) -t Hallo! -A max(0,255-exp(N/16))' -sameq -acodec copy output.flv
sqlite3 -line database.db
2010-10-09 16:10:19
User: pykler
Tags: CSV html sql sqlite
-1

Similar output to using MySQL with the \G at the end of a Query. Displays one column per line. Other modes include:

-column

Query results will be displayed in a table like form, using whitespace characters to separate the columns and align the output.

-html Query results will be output as simple HTML tables.

-line Query results will be displayed with one value per line, rows separated by a blank line. Designed to be easily parsed by scripts or other programs

-list Query results will be displayed with the separator (|, by default) character between each field value. The default.

From inside the command line this can be also changed using the mode command:

.mode MODE ?TABLE? Set output mode where MODE is one of:

csv Comma-separated values

column Left-aligned columns. (See .width)

html HTML code

insert SQL insert statements for TABLE

line One value per line

list Values delimited by .separator string

tabs Tab-separated values

tcl TCL list elements

find -type f -exec du -sh {} + | sort -rh | head
find . -name '*.txt' -exec mv {} {}.sh \ ;
2011-06-02 23:47:19
Functions: find mv
-1

You can replace "." with your folder

MAC=$((date +'%Y%m%d%H%M%S%N'; cat /proc/interrupts) | md5sum | sed -r 's/(..)/\1:/g' | cut -d: -f 1-6)
2011-07-14 13:11:50
User: jazznjam
Functions: cat cut date md5sum sed
-1

I liked vaporub's suggestion, here a little simplification of the sed command.

convert example.png -resize 100x100 output.png
2010-08-08 16:40:21
User: dbbolton
-1

You can also specify width and height of the resized image (in pixels), as an alternative to using a percentage.

find . -name "*.png" | tee images.txt | grep book
2011-06-02 23:55:50
Functions: find grep tee
-1

You can find every file with png extension and redirect its output to file. Later you can find a string inside the file.

cp -dpRx /* /mnt/target/
2011-08-22 14:22:01
Functions: cp
-1

preserve all except context and xattr. useful when moving a running system to a new partition.

vgdisplay -v 2>/dev/null | grep "^ LV Name" | while read A B LVDEV; do echo $LVDEV; done
NFSPATH=/mountpoint TIMEOUT=5; perl -e "alarm $TIMEOUT; exec @ARGV" "test -d $NFSPATH" || (umount -fl $NFSPATH; mount $NFSPATH)
2010-06-04 07:58:53
User: keymon
Functions: mount perl umount
-1

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

cat /etc/passwd | wc -l
iostat -En $(iostat -en|grep c#t|awk '$2 > 0 {print $NF}')
2011-12-09 15:54:28
Functions: awk grep
-1

This helps quickly get information for each disk that is seemingly having hardware issues.

do-release-upgrade
2009-03-25 07:25:33
User: dizzgo
Tags: Ubuntu
-1

release upgrades are major upgrades as from 8.04 to 8.10 or from 8.10 to 9.04

update-manager-core must be installed:

sudo apt-get install update-manager-core

in some cases you must edit '/etc/update-manager/release-upgrades' and set 'Prompt=normal'

recoll -t -q "keyword" | grep message/rfc822 | sed -s 's,^.*\('$MAILDIR'[^]]*\)\].*$,\"\1\",' | xargs ln -sft $MAILDIR/bingo/cur/
ls -d */* | sed -e 's/^/\"/g' -e 's/$/\"/g' | xargs mv -t $(pwd)
2010-03-01 23:43:26
User: leovailati
Functions: ls mv sed xargs
-1

You WILL have problems if the files have the same name.

Use cases: consolidate music library and unify photos (especially if your camera separates images by dates).

After running the command and verifying if there was no name issues, you can use

ls -d */ | sed -e 's/^/\"/g' -e 's/$/\"/g' | xargs rm -r

to remove now empty subdirectories.

dc -e "1 1 + p"
ff() { find -maxdepth 3 -type f -iname "$1"; }; fd() { find -maxdepth 4 -type d -iname "$1"; }
2012-08-15 15:04:48
User: plasticboy
Functions: find
Tags: find simple
-1

These should be a little faster since they don't have to spawn grep.

gs -dNOPAUSE -sDEVICE=pdfwrite -sOUTPUTFILE=merged.pdf -dBATCH `ls | grep foo`
perl -e 'print 1+1 ."\n";'
echo | socat -u - file:/tmp/swapfile,create,largefile,seek=10000000000000
find ~/.thunderbird/*.default/ -name *.msf | sed 's/ /\\ /g' | xargs rm {} \;
2010-06-04 12:35:24
User: allrightname
Functions: find rm sed xargs
-1

The thunderbird message datastores get corrupt some times causing random failures, compaction to fail and general suck in thunderbird. Removing them causes thunderbird to rebuild the indexes and makes things quick again.

fdupes -rdN $folder
openssl pkcs8 -inform DER -nocrypt -in [priv key] -out [pem priv key]