- Copy directories without content
rsync -av -f"+ */" -f"- *" "$source" "$target"
- Find files
find /path/to/dir -type f -name "*" -newermt 2013-02-07 ! -newermt 2013-02-08
find $HOME/projects -type f -name "*.py" -newermt 2013-02-07 ! -newermt 2013-02-08 -print
find $HOME/projects -type f -name "*.py" -newermt 2013-02-07 ! -newermt 2013-02-08 -ls
- Delete Files older Than
find /var/log -name "*.log" -type f -mtime +30 -delete
find /var/log -type d -mtime +30 -exec rm -rf {} \;
- How to print a file, excluding comments and blank lines, using grep
grep -v '^$\|^#\|^\s*\#' filename | grep -v "^[[:space:]]*$" | more
- bash operations with file with spaces in name
IFS=$(echo -en "\n\b"); for i in $(ls -d */ | cut -f1 -d'/'); do echo $i; done
IFS=$(echo -en "\n\b"); for i in $(ls -d */ | cut -f1 -d'/'); do echo "$i;"| tr -d '\r\n'; find $i -type f | wc -l; done
- ssh automation
ssh -i /usr/local/sbin/id_rsa -oStrictHostKeyChecking=no [email protected] 'upsc qnapups'
-i RSA key, -o add to known host automatically
- Audiofile operations
- LVM operations
- SSL Certificate with SAN
