Differences between version 13 and predecessor to the previous major change of BashOneLiners.
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| Newer page: | version 13 | Last edited on Friday, May 21, 2004 8:37:29 am | by AristotlePagaltzis | Revert |
| Older page: | version 10 | Last edited on Saturday, May 1, 2004 8:57:48 pm | by PerryLorier | Revert |
@@ -1,26 +1,44 @@
-!! Sort a directory of mp3s into directories like Artist/Album Name/
+!
!! Sort a directory of mp3s into directories like Artist/Album Name/
<verbatim>
-for file in *.mp3; do \
-
eval $( id3tool "$file" | sed 's/^[^:]* //; s/:[\t ]*/="/; s/[[:cntrl:]]//g; /./!d; s/ *$/"/' ) \
-
{ [ "$Artist" -o "$Album" ] && dir="$Artist/$Album/" ; } || { [ "$Artist" ] && dir="$Artist/" ; } || continue ; \
-
mkdir -p "$dir" ; mv "$file" "$dir/" ; \
-done
+
for file in *.mp3; do
+
eval $( id3tool "$file" | sed 's/^[^:]* //; s/:[\t ]*/="/; s/[[:cntrl:]]//g; /./!d; s/ *$/"/' )
+
{ [ "$Artist" -o "$Album" ] && dir="$Artist/$Album/" ; } || { [ "$Artist" ] && dir="$Artist/" ; } || continue
+
mkdir -p "$dir" ; mv "$file" "$dir/"
+
done
</verbatim>
It uses [id3tool | http://nekohako.xware.cx/id3tool/] to read the [ID3] tag, instructs [SED] to massage the information into something that looks like [Shell] script, executes that to put values into variables, checks which variables are set, and if at least an artist name (optionally also album name) is given, moves the file into that directory. (It's rather a mouthful for a oneliner, but hey.)
-!! Refresh the all [GPG] keys from the [KeyServer] without flooding it:
+----
+
+!
!! Refresh the all [GPG] keys from the [KeyServer] without flooding it:
+
<verbatim>
-
for uid in `
gpg --with-colons --list-keys| grep "
^pub"
| awk -F: '{print $5}'`
; do gpg --refresh $uid; sleep 5; done
+
for uid in $(
gpg --with-colons --list-keys | grep ^pub | awk -F: '{print $5}' )
; do gpg --refresh $uid ; sleep 5 ; done
</verbatim>
-Alter the number after sleep(1) to change the speed of the refresh.
-[Paid surveys | http
://www.paidsurveysforall.com]
-[BPO services | http://www.thuriam.com]
-[BPO services | http://www.isourceindia.com]
-[Media Transcription
| http
://media
-transcription.thuriam.com]
-[BPO India | http:
//www.thuriam.com]
-[Data Processing | http
://bpo
.thuriam.com/data_processing.html]
-[Technical Writing
| http
://technical
-writing.thuriam.com]
-[Seo Services | http:/
/seo-services.thuriam.com]
-[Callcenter India
| http
://call
-centre.thuriam
.com]
+
+
Alter the number after sleep(1) to change the speed of the refresh. This is equalivent to the slightly more understandable
:
+
+<verbatim>
+ for uid in $( gpg --with-colons --list-keys
| grep ^pub | awk -F
: '{print $5}' ) ; do
+ gpg
--refresh $uid
+ sleep 5
+ done
+<
/verbatim>
+
+! Notes by AristotlePagaltzis
:
+
+This is a useless use of grep
. Better written as follows:
+
+<verbatim>
+ for uid in $( gpg --with-colons --list-keys
| awk -F
: '
/^pub
/{ print $5 }' ) ; do gpg
--refresh $uid ; sleep 5 ; done
+<
/verbatim>
+
+which can be abbreviated as
+
+<verbatim>
+ gpg --with-colons --list-keys
| awk -F
: '
/^pub
/{ print $5 }' | xargs
-ri sh -c 'gpg --refresh {} ; sleep 5'
+</verbatim>
+
+It's a pity xargs(1) doesn't offer any speed controls itself, in that case the ugly roundabout via shell wouldn't be necessary
.
