Add autotest library compression helper script

1 files changed, 57 insertions, 0 deletions

diff --git a/compress_large_files b/compress_large_files
new file mode 100755
index 0000000..e5c8a96
--- /dev/null
+++ b/compress_large_files
@@ -0,0 +1,57 @@
+#!/bin/bash
+#
+# Recursively compress any files greater than a supplied MINSIZE (-s), starting
+# from the supplied DIRECTORY (-d).
+#
+
+error() {
+    echo "Error: $1"
+    exit 1
+}
+
+usage() {
+    echo "Usage: $0 <options>
+
+Where <options> include:
+   -d DIRECTORY - Specify directory to recurse
+   -s MINSIZE   - Minimum file size in MiB to compress
+   -n           - Don't make changes, just display
+"
+    exit 1
+}
+
+# Initialize variables
+COMPRESS_SUFFIX=".gz"
+COMPRESS_CMD="gzip -v --suffix ${COMPRESS_SUFFIX}"
+
+# Process cmdline arguments
+DRYRUN=0
+MINSIZE=""
+COMPRESS_DIR=""
+while getopts "ns:d:h" options; do
+  case $options in
+    n ) DRYRUN=1 ;;
+    s ) MINSIZE=$OPTARG ;;
+    d ) COMPRESS_DIR=$OPTARG ;;
+    \?|h ) usage ;;
+    * ) usage ;;
+  esac
+done
+
+# Validate input
+test -z "${COMPRESS_DIR}" && error "Missing -d argument"
+test -z "${MINSIZE}" && error "Missing -s argument"
+
+# Find files to compress using the supplied arguments
+find "${COMPRESS_DIR}" -type f -not -name "*${COMPRESS_SUFFIX}" -size +"${MINSIZE}"M |
+while read line
+do
+    if [ ${DRYRUN} -eq 1 ]; then
+        echo "Would run: ${COMPRESS_CMD} ${line}"
+    else
+        ${COMPRESS_CMD} ${line}
+        # Create symlink to original file
+        ln -s $(basename $line).gz ${line}
+    fi
+done
+