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--- tips:threelinestip [2009/05/25 00:34]
127.0.0.1 external edit
+++ tips:threelinestip [2012/12/01 18:13]
a [Create static mirror of dynamic web site (ex. Wordpress)]
@@ Line 146: / Line 146: @@
     -density 300 -quality 80 $file `echo $file | sed 's/\.pdf$/\.jpg/'`; done
+===== rename upper to lowercase in bash ====
+   for x in *.JPG; do y=$(echo $x | tr '[A-Z]' '[a-z]'); echo $y; mv $x $y; done
+===== Find duplicate files in Linux =====
+Let’s say you have a folder with 5000 MP3 files you want to check for duplicates. Or a directory containing thousands of EPUB files, all with different names but you have a hunch some of them might be duplicates. You can cd your way in the console up to that particular folder and then do a
+<code>
+find -not -empty -type f -printf “%s\n” | sort -rn | uniq -d | xargs -I{} -n1 find -type f -size {}c -print0 | xargs -0 md5sum | sort | uniq -w32 --all-repeated=separate
+</code>
+This will output a list of files that are duplicates, according tot their HASH signature.
+Another way is to install fdupes and do a
+   fdupes -r ./folder > duplicates_list.txt
+The -r is for recursivity. Check the duplicates_list.txt afterwards in a text editor for a list of duplicate files.
+===== Linux - Top 10 CPU-hungry apps =====
+   ps -eo pcpu,pid,args | sort -k 1 -r | head -10
+===== Create static mirror of dynamic web site (ex. Wordpress) =====
+   wget --mirror -w 2 -p -r -np --html-extension --convert-links -R xmlrpc.php,trackback <URL>
+===== Find processes utilizing high memory in human readable format ======
+   ps -eo size,pid,user,command | sort -rn | head -5 | awk '{ hr[1024^2]="GB"; hr[1024]="MB"; for (x=1024^3; x>=1024; x/=1024) { if ($1>=x) { printf ("%-6.2f %s ", $1/x, hr[x]); break } } } { printf ("%-6s %-10s ", $2, $3) } { for ( x=4 ; x<=NF ; x++ ) { printf ("%s ",$x) } print ("\n") }'