cat xxx | more
cat xxx | less
cat > xxx , create a file xxx
cat -n xxx | more with line number information.
cat aaa.txt >> bbb.txt, the aaa.txt will be appened to bbb.txt
cat xxx | more
cat xxx | less
cat > xxx , create a file xxx
cat -n xxx | more with line number information.
cat aaa.txt >> bbb.txt, the aaa.txt will be appened to bbb.txt