Add my bash scripts

1 files changed, 62 insertions, 0 deletions

diff --git a/local/bin/rename_pictures.sh b/local/bin/rename_pictures.sh
new file mode 100755
index 0000000..f2f5004
--- /dev/null
+++ b/local/bin/rename_pictures.sh
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+#!/bin/bash
+
+# Credit: 
+# Mitsuo, GPT4
+# 2023年 11月  8日 水曜日 15:46:55 -05
+
+# Check for proper number of command line args.
+expected_args=3
+if [ $# -ne $expected_args ]; then
+    echo "Usage: $1 {prefix} {date in yyyy-mm-dd format} {file extension, e.g., jpg}"
+    exit 1
+fi
+
+# Assign command line args to variables
+prefix=$1
+current_date=$2
+extension=$3
+
+# Validations
+if ! [[ $current_date =~ ^[0-9]{4}-[0-9]{2}-[0-9]{2}$ ]]; then
+    echo "Date format is invalid. Please use yyyy-mm-dd format."
+    exit 1
+fi
+
+if [[ $extension == .* ]]; then
+    echo "Please provide the file extension without a leading period."
+    exit 1
+fi
+
+if [[ -z $prefix ]]; then
+    echo "Please provide a non-empty prefix."
+    exit 1
+fi
+
+
+# Loop through all files with the given extension in the current directory
+# 
+# By default, if you use a pattern that doesn't match any filenames (like *.jpg
+# when there are no .jpg files), bash will pass the pattern itself as an
+# argument to commands. For example, if there are no .jpg files in your
+# directory and you use the *.jpg pattern in a loop or command, the loop or
+# command will receive *.jpg as an input, which is probably not what you want.
+shopt -s nullglob
+i=1
+for file in *$extension; do
+    # Skip if the file is not a regular file
+    if [[ ! -f $file ]]; then
+        continue
+    fi
+
+    # Generate the correlative number with leading zeros
+    printf -v suffix "%02d" $i
+
+    # Rename the file (-- is end of command line options)
+    mv -- "$file" "${prefix}-${current_date}_${suffix}.${extension}"
+
+    # Increment the counter
+    ((i++))
+done
+
+shopt -u nullglob
+echo "Renaming complete!"