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KSH script to check the number of processes on a system and send an email if there are too many. I liked this as it was simple, but had some nice elements that could be used elsewhere. #!/bin/ksh # # Script to check for run away ftp processes. # 04/08 – Mike Byers HOST=`uname -n` [...]  So you want to change some text in many unix files. Try the following. perl -pi -e ‘s/find/replace/g’ *.txt or to script it out. Find the TEXT in regular files and replace with NEWTEXT for file in `find ./ -type f -exec grep -l TEXT {} \;` do perl -pi -e ‘s/TEXT/NEWTEXT/g’ $file done [...] You can set the font color on the command line if you so desire. To start, type this on your console: echo “^[[0;31;40m In Color” In Color The first character is an escape character, which looks like two characters, ^ and [. To be able to print this, you have to press CTRL+V [...] There is a very good list of cheat sheets located at http://www.petefreitag.com/item/455.cfm The sudo command comes with some fun insulting messages when you mistype your password. In you sshd.conf you need to have “insults” turned on for them to show up. I started to think that there must be a way to change the insult messages. For instance at home I may want more, non-politically correct insults [...] First there are a couple scenarios for the tunnel. Out_host -> Gateway -> Other_host In this sense you want to get to the other host or to a port on another host. Use: ssh -L local_listen_port:gateway:gateway_port Other_host Remote forwarding is used to skip past systems to a destination. You can then use the ssh -p [...] |
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Copyright © 2012 LosByers- Interesting Musings Helpful Hints from a Unix System Administrator - All Rights Reserved |
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