Shell script to clean nexus repos

#!/bin/sh NR_ARGS=4 if [ $# -ne "$NR_ARGS" ] # script invoked with wrong command-line args? then echo "Usage: `basename $0` <path> <library> <group_id> <keep_versions>" echo " cleanup of whole repository: group_id=first_group_id, e.g. com" echo " cleanup of just a part of the repository: group_id=more_detailed_group_id, e.g. com.only.supplier" echo "Example: `basename $0` /path/to/my/nexus/storage my-releases de 5" exit 2 # exit and explain usage. fi BASE=$1 LIBRARY=$2 # replace dots in maven group id with file separator / GROUP_ID=`echo $3 | sed 's#\.#/#g'` KEEP_VERSIONS=$4 if [ ! -d $BASE/$LIBRARY/$GROUP_ID ] ; then echo "can not access directory: $BASE/$LIBRARY/$GROUP_ID" exit 2 fi cd $BASE/$LIBRARY # determination of artifact names and corresponding dirs, which hold every archived artifact version # assumption: every artifact directory contains a pom file DIRS=`find $GROUP_ID -name "*.pom" -print | \ sort -n | sed 's#/[.a-zA-Z0-9-]*\.pom$#/#'` # DIRS contains every version directory, but we need only the paths of the artifacts, because there may be several versions of the same artifact, the following iteration has to be cleaned up before we continue for i in $DIRS ; do # check if found directory is really a directory cd $i; cd .. ARTIFACT_DIRS="$ARTIFACT_DIRS `pwd`" # remove duplicates with sort -u ARTIFACT_DIRS=`echo $ARTIFACT_DIRS | tr " " "\n" | sort -u` cd $BASE/$LIBRARY done # walk through the artifact dirs and delete all except the last n versions ($KEEP_VERSIONS) for artifactDir in $ARTIFACT_DIRS; do cd $artifactDir # how many subdirectories/releases are in the artifact dir? # numeric sort of var1.var2.var3.var4 -t= (var separator) = '.' DIR=`find -maxdepth 1 -type d -print | sed 's#\./##' | \ sort -n -t\. -k1,1 -k2,2 -k3,3 -k4,4 | \ tail -n +2` DIR_COUNT=`echo $DIR | tr " " "\n" | wc -l` # echo "$artifactDir contains $DIR_COUNT versions" # how many versions have to be deleted? DELETE_NUMBER=`expr $DIR_COUNT - $KEEP_VERSIONS` if [ $DELETE_NUMBER -gt 0 ]; then DIRS_TO_DELETE=`echo $DIR | tr " " "\n" | \ head -n $DELETE_NUMBER` for versionToDelete in $DIRS_TO_DELETE; do rm -rf $artifactDir/$versionToDelete echo "rm -rf $artifactDir/$versionToDelete" done fi cd $BASE/$LIBRARY done