小密圈摘到的姿势,感谢东少的分享。

cat /etc/issue
tac /etc/issue
less /etc/issue
more /etc/issue
head /etc/issue
tail /etc/issue
nl /etc/issue
xxd /etc/issue
python -c "print(open('/etc/issue').read())"
perl -F" -0777ae 'print(@F)'</etc/issue
ruby -e 'IO.foreach("/etc/issue"){|a| print a}'
echo $(</etc/issue) or echo `</etc/issue`
sed -n '1,10p' /etc/issue
grep . /etc/passwd
awk '{print $0}' /etc/passwd
php -r "echo file_get_contents('/etc/passwd');"
base64 -i /etc/passwd
dd count=1000 bs=1 if=/etc/passwd 2>/dev/null
sort /etc/passwd
uniq /etc/passwd
strings /etc/passwd
egrep|fgrep|rgrep|agrep "" /etc/passwd
rev /etc/passwd
comm /etc/passwd /etc/passwd
paste /etc/passwd