TerryFunggg

grep -Ril "text-want-to-find" <directory>

# -i  for ignore case
# -R for recursive
# -l for show the file name

# Example:
# In my case, I forgot the location of my mirrors config
# but I remember what mirrors i used
grep -Ril "aliyun" /etc

TerryFunggg

# encode
echo [email protected] | base64

# decode
echo BASE64_CODE | base64 -d

TerryFunggg

ps -eo pid,ppid,%mem,%cpu,comm --sort=-%cpu | head

# Result :
#
#    PID    PPID %MEM %CPU COMMAND
# 948934  948837  2.9 44.4 spotify
# 948781       1  2.9 27.5 spotify
# 948876  948836  1.5  9.2 spotify
#  80755       1  7.5  5.3 firefox
# 948919  948781  1.1  3.6 spotify