RM Command Safety remap the rm command to be 'rm -i' Do this by editing the .profile with: alias rm='rm -i'
To check RedHat installation version: cat /etc/redhat-release
To cd or change to a directory with spaces in the path, use "double quotes around the entire target path "
Do copy a folder to a new folder in the same path:
Suppose you are at /home/someplace/ and you want to copy /home/someplace/SourceFolder to a new folder, to the following at /home/someplace/
cp -r SourceFolder NewDestinationFolder
To copy all the files in a directory to a new directory, enter:
cp -R * /new/file/location
To check memory usage on the server:
vi removing trailing blanks workaround cut -c1-40 m3a.cvs > m3aclean.cvs
vi searching (shift + colon, then) :g/stuff/p
cat file1 file2 file3 > file4 This command combines the contents of the first three files into the fourth file. Network and IP configuration: system-config-network
ps -ef | grep STUFF-U-WANT
Find out which directories have the most stuff in them du -ks * | sort -nr
What shell am I using? ps -p$$ -or- echo $SHELL
ps -ef | grep somthing OR lsof | grep something
Check the space used on the hard disks: df -h for human
use 'set -o vi' if your previous command is not working or backspace is not working. f
Here's a script to use for checking if process are running. It's instead of ps.
if -z $1 ; then print 'usage: chk <include> <exclude>' else if -z $2 ; then if ps -aef|grep $1|grep -v 'grep'|grep -v 'ps -aef'; then return 0 else return 1 fi else ps -aef|grep $1|grep -v $2|grep -v 'grep'|grep -v 'ps -aef'; fi fi