BreadCrumbs: Bash Scripts
Bash Scripts
From Luke Jackson
(Difference between revisions)
| Revision as of 20:32, 10 May 2009 (edit) Ljackson (Talk | contribs) (→Echo Random Word X Times) ← Previous diff |
Current revision (07:13, 31 December 2014) (edit) Ljackson (Talk | contribs) (→Echo Random Word X Times) |
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| Line 15: | Line 15: | ||
| done | done | ||
| </pre> | </pre> | ||
| + | |||
| + | == Bash Infinite Loop == | ||
| + | |||
| + | while true; do echo Total Files: `ll | wc -l`; sleep 1; done | ||
| == Conditional Device Check & Image Upload (Mac OS X) == | == Conditional Device Check & Image Upload (Mac OS X) == | ||
| Line 36: | Line 40: | ||
| echo No Cam Connected! | echo No Cam Connected! | ||
| fi | fi | ||
| + | </pre> | ||
| + | |||
| + | == Compress files into multiple archives limited by resulting archive file size == | ||
| + | |||
| + | <pre> | ||
| + | #!/bin/bash | ||
| + | |||
| + | if [ $# != 3 ] ; then | ||
| + | echo -e "$0 in out max\n" | ||
| + | echo -e "\tin: input directory" | ||
| + | echo -e "\tout: output directory" | ||
| + | echo -e "\tmax: split size threshold in bytes" | ||
| + | exit | ||
| + | fi | ||
| + | |||
| + | IN=$1 OUT=$2 MAX=$3 SEQ=0 TOT=0 | ||
| + | find $IN -type f | | ||
| + | while read i ; do du -s "$i" ; done | | ||
| + | sort -n | | ||
| + | while read SIZE NAME ; do | ||
| + | if [ $TOT != 0 ] && [ $((TOT+SIZE)) -gt $MAX ] ; then | ||
| + | SEQ=$((SEQ+1)) TOT=0 | ||
| + | fi | ||
| + | TOT=$((TOT+SIZE)) | ||
| + | TAR=$OUT/$(printf '%08d' $SEQ).tar | ||
| + | tar vrf $TAR "$NAME" | ||
| + | done | ||
| + | |||
| + | for i in *.tar; do gzip $i; done | ||
| </pre> | </pre> | ||
| Line 74: | Line 107: | ||
| for ((i=1;i<=555;i+=1)); do printf "`sed \`perl -e "print int rand(99999)"\`"q;d" /usr/share/dict/words` "; done | for ((i=1;i<=555;i+=1)); do printf "`sed \`perl -e "print int rand(99999)"\`"q;d" /usr/share/dict/words` "; done | ||
| + | |||
| + | == Sources == | ||
| + | |||
| + | * http://tldp.org/LDP/abs/html/refcards.html#AEN22664 | ||
| + | * http://wiki.bash-hackers.org/syntax/expansion/brace | ||
| [[Category:Linux]] | [[Category:Linux]] | ||
| [[Category:Mac OS X]] | [[Category:Mac OS X]] | ||
Current revision
[edit]
Simple Wget Loop
alpha=( aa bb cc dd ee ff gg hh ii jj kk ll mm nn oo pp qq rr ss tt uu vv ww xx yy zz )
alpha_count=${#alpha[*]}
x=0
while [ "$x" -lt "$alpha_count" ]
do # List all the elements in the array.
wget -O ${alpha[$x]}.wav http://german.about.com/library/media/sound/${alpha[$x]}.wav
sleep 1
let "x = $x + 1"
done
[edit]
Bash Infinite Loop
while true; do echo Total Files: `ll | wc -l`; sleep 1; done
[edit]
Conditional Device Check & Image Upload (Mac OS X)
#!/bin/bash
CAMSTAT=`/usr/sbin/system_profiler SPUSBDataType | awk '{$1=$1;print}' | grep WebCam | cut -c 1-6`
if [ "$CAMSTAT" = "WebCam" ]; then
# Create History Image
echo Make History
scp -P 2222 ~/m31uk3.jpg me@server.com:/www/server.com/htdocs/webcam/history/m31uk3_`date +%s`.jpg
# Update Webcam
echo Take a Picture
scp -P 2222 ~/m31uk3.jpg me@server.com:/www/server.com/htdocs/webcam/
else
echo No Cam Connected!
fi
[edit]
Compress files into multiple archives limited by resulting archive file size
#!/bin/bash
if [ $# != 3 ] ; then
echo -e "$0 in out max\n"
echo -e "\tin: input directory"
echo -e "\tout: output directory"
echo -e "\tmax: split size threshold in bytes"
exit
fi
IN=$1 OUT=$2 MAX=$3 SEQ=0 TOT=0
find $IN -type f |
while read i ; do du -s "$i" ; done |
sort -n |
while read SIZE NAME ; do
if [ $TOT != 0 ] && [ $((TOT+SIZE)) -gt $MAX ] ; then
SEQ=$((SEQ+1)) TOT=0
fi
TOT=$((TOT+SIZE))
TAR=$OUT/$(printf '%08d' $SEQ).tar
tar vrf $TAR "$NAME"
done
for i in *.tar; do gzip $i; done
[edit]
Move Files Based On Date Name
for ARG in $* do PICPATH=`echo $ARG | cut -d_ -f 2 | cut -d. -f 1 | utimecam` # echo $PICPATH mv -v $ARG $PICPATH/$ARG # sleep 1 done
[edit]
Replace Multiple Strings, Words, Regular Expressions in Multiple Files from Terminal
find . -name '*.svg' | xargs -IX grep -E '12:(04|05|08|11|16|21|22|33|35|36|46) am 01.20.09' X | sort | wc -l
for i in `find . -name '*.svg' | xargs -IX grep -lE '12:(04|05|08|11|16|21|22|33|35|36|46) am 01.20.09' X` ; do
amcount=${#i}
extension="${i##*.}"
newname="${i%?.*}"
cat "$i" | sed -e 's/12:04 am 01.20.09/12:04 pm 01.20.09/' -e 's/12:05 am 01.20.09/12:05 pm 01.20.09/' -e 's/12:08 am 01.20.09/12:08 pm 01.20.09/' -e 's/12:11 am 01.20.09/12:11 pm 01.20.09/' -e 's/12:16 am 01.20.09/12:16 pm 01.20.09/' -e 's/12:21 am 01.20.09/12:21 pm 01.20.09/' -e 's/12:22 am 01.20.09/12:22 pm 01.20.09/' -e 's/12:33 am 01.20.09/12:33 pm 01.20.09/' -e 's/12:35 am 01.20.09/12:35 pm 01.20.09/' -e 's/12:36 am 01.20.09/12:36 pm 01.20.09/' -e 's/12:46 am 01.20.09/12:46 pm 01.20.09/' > "$i".fix.svg
echo "$i" of "$amcount"
diff "$i" "$i".fix.svg
wc -l "$i"
wc -l "$i".fix.svg
mv "$i".fix.svg "$i"
done
[edit]
Count Files in Subdirectories
for i in `ls -1d */pixel/*trans*`; do echo -e $i = `find -E $i -regex '.*(.png|.jpg)' | wc -l`; done
[edit]
Echo Random Word X Times
for ((i=1;i<=555;i+=1)); do printf "`sed \`perl -e "print int rand(99999)"\`"q;d" /usr/share/dict/words` "; done
[edit]