Commands by jhyland87 (4)

  • Use Growl to monitor your local apache error logs for new messages

    Simply add this to whatever apache startup script you have, or if you are on a MAC, create a new automator application. This will show a pretty growl notification whenever theres a new Apache error log entry. Useful for local development


    0
    /usr/bin/tail -fn0 /path/to/apache_error.log | while read line; do /usr/local/bin/growlnotify --title "Apache Notice" --message "$line"; done &
    jhyland87 · 2013-01-22 05:25:41 5
  • updatedb for MAC OSX

    MAC OSX doesn't come with an updatedb command by default, this will emulate the updatedb thats on a typical Linux OS. Simply add it to your ~/.bash_profile


    2
    alias updatedb="sudo /usr/libexec/locate.updatedb"
    jhyland87 · 2013-01-21 17:46:57 6
  • Locate command for MAC OSX

    MAC OSX doesn't come with a locate command, This will do the same thing as the locate command on a typical Linux OS. Simply add it to your ~/.bash_profile


    0
    alias locate='if [ $((`date +%s`-`eval $(stat -s /var/db/locate.database); echo $st_mtime`)) -gt 3600 ]; then echo "locate: db is too old!">/dev/stderr; sudo /usr/libexec/locate.updatedb; fi; locate -i'
    jhyland87 · 2013-01-21 17:45:50 4
  • Get top N files in X directory

    You can simply run "largest", and list the top 10 files/directories in ./, or you can pass two parameters, the first being the directory, the 2nd being the limit of files to display. Best off putting this in your bashrc or bash_profile file Show Sample Output


    1
    largest() { dir=${1:-"./"}; count=${2:-"10"}; echo "Getting top $count largest files in $dir"; du -sx "$dir/"* | sort -nk 1 | tail -n $count | cut -f2 | xargs -I file du -shx file; }
    jhyland87 · 2013-01-21 09:45:21 7

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Convert seconds to [DD:][HH:]MM:SS
Converts any number of seconds into days, hours, minutes and seconds. sec2dhms() { declare -i SS="$1" D=$(( SS / 86400 )) H=$(( SS % 86400 / 3600 )) M=$(( SS % 3600 / 60 )) S=$(( SS % 60 )) [ "$D" -gt 0 ] && echo -n "${D}:" [ "$H" -gt 0 ] && printf "%02g:" "$H" printf "%02g:%02g\n" "$M" "$S" }

convert UNIX timestamp to UTC timestamp
date -ud @1320198157

Copy all documents PDF in disk for your home directory
I used this to copy all PDFs recursively to a selected dir

Optimize PDF documents

Manipulate the metadata and edit the create time (This will change date to 1986:11:05 12:00 - Date: 1986 5th November, Time: 12.00) and then it will set modify date to the same as alldate.

Prints new content of files
Useful to e.g. keep an eye on several logfiles.

find your release version of your ubuntu / debian distro

scping files with streamlines compression (tar gzip)
it compresses the files and folders to stdout, secure copies it to the server's stdin and runs tar there to extract the input and output to whatever destination using -C. if you emit "-C /destination", it will extract it to the home folder of the user, much like `scp file user@server:`. the "v" in the tar command can be removed for no verbosity.

Chage default shell for all users [FreeBSD]
This command will set bash as the default shell for all users in a FreeBSD system.

Top 10 Memory Processes
It displays the top 10 processes sorted by memory usage

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