linux command wc
Linux command wc
【Purpose】
Learning how to statistics line numbers in file
【Eevironment】
Ubuntu 16.04 terminal
【Procdeure】
$ cat test.sh
#!/bin/bash
echo "shell args
option"
echo "script name : $0"
echo "first args : $1"
echo "first args : $2"
echo "first args : $3"
echo "------- \$#
demonstration"
echo "args number: $#"
echo "------- \$\$ demonstration"
echo "shell pid: $$"
echo "------- \$*
demonstration"
for i in "$*";do
echo $i
done
echo "------- \$@
demonstration"
for i in "$@";do
echo $i
done
echo "------- \$-
demonstration"
echo $-
$ cat test.sh | wc -l
27
it can be use for statistics line numbers