UNIX Commands
#1 To create a symbolic link, the syntax of the command is similar to a
copy or move command: existing file first, destination file second. For
example, to link the directory /export/space/common/archive to /archive
for easy access, use:
ln -s /export/space/common/archive /archive
#2 number of lines in files
wc -l *.c
#3 directory size
du -ms **
#4 number of files in the directory
ls -1 *.h *.c *.cpp | wc -l
#5 aliasing
alias make=~/home/user/bin/gmake
#6 merging files
cat $1/a.doc >> $2/a.doc