def q10(input_file="hightemp.txt"):
cmd = "cat {} | wc -l".format(input_file)
print(execute_cmd(cmd))
def q18():
cmd = "sort -r -nk3 {}".format("hightemp.txt")
print(execute_cmd(cmd))
def q19():
cmd = "cut -f1 {} | sort | uniq -c | sort -nk1 -r | cut -f1".format(
"hightemp.txt")
print(execute_cmd(cmd))
def q16(n=3):
input_file = "hightemp.txt"
cmd = "split -l {} {} {}".format(q10(input_file) // n, input_file, "q16/")
print(execute_cmd(cmd))
def q17():
cmd = "cat hightemp.txt | awk '{print $1}' | sort | uniq | wc -l"
print(execute_cmd(cmd))
def q15(n=10):
cmd = "tail -n{} hightemp.txt".format(n)
print(execute_cmd(cmd))
def q14(n=10):
cmd = "head -n{} hightemp.txt".format(n)
print(execute_cmd(cmd))
def q13():
cmd = "paste q12/col1.txt q12/col2.txt > q13/col1_2.txt"
print(execute_cmd(cmd))
def q12():
for i in range(1, 3):
cmd = "cat hightemp.txt | cut -f{0} > q12/col{0}.txt".format(i)
print(execute_cmd(cmd))
def q11():
# can be sed
# expand -> expand -t 1 hightemp.txt
cmd = "cat hightemp.txt | tr '\t' ' ' > ./q11/hightemp_space.txt"
print(execute_cmd(cmd))