what the following command is doing ?

[mikelala1973]

Plesae let me know what the following command is doing ..

Could not able to understand ..

print $(wc -l $InputFileSrc | awk '{ print $2 "|"$1 "|" }')$(cksum $InputFileSrc | awk '{ print $1 }') | awk -F"[ /]" '{ print $NF }'

thanks/Mike

 

[LKBrwnDBA]

print $( -- Prints the following (string):
wc -l $InputFileSrc            <--count lines in $InputFileSrc file
| awk '{ print $2 "|"$1 "|" }' <--piped into awk which will concat and print $2=file name, '|', line count
) concatenated to the following string:
$(
cksum $InputFileSrc |           <-- checksum of same file piped into awk
awk '{ print $1 }') |           <-- which prints the first field, ends the string and pipes into...
awk -F"[ /]" '{ print $NF }'    <-- which sets the input field separator to space+/ and 
                                    prints the number of fields.

----------------------------------------------------------------------------
The person who says it can't be done should not interrupt the person doing it. -- Chinese proverb

 

[LKBrwnDBA]

PS: This part does nothing because the resulting string has no spaces or '/'s:

.... | awk -F"[ /]" '{ print $NF }'

----------------------------------------------------------------------------
The person who says it can't be done should not interrupt the person doing it. -- Chinese proverb

 

[w5000]

it just echo two $(...)

# InputFileSrc=file
# print $(wc -l $InputFileSrc | awk '{ print $2 "|"$1 "|" }')$(cksum $InputFileSrc | awk '{ print $1 }') | awk -F"[ /]" '{ print $NF }'
file|2|3115234434
#

and step by step:

# wc -l $InputFileSrc
       2 file
# wc -l $InputFileSrc | awk '{ print $2 "|"$1 "|" }'
file|2|
# print $(wc -l $InputFileSrc | awk '{ print $2 "|"$1 "|" }')
file|2|
# cksum $InputFileSrc
3115234434 8 file
# cksum $InputFileSrc| awk '{ print $1 }'
3115234434
# print $(cksum $InputFileSrc | awk '{ print $1 }')
3115234434
# print "file|2|3115234434"
file|2|3115234434
# print "file|2|3115234434"|awk -F"[ /]" '{ print $NF }'
file|2|3115234434
#

so the last piped awk has nothing to do in above sample, but in below input it does

# InputFileSrc=/tmp/dd/file
# print $(wc -l $InputFileSrc | awk '{ print $2 "|"$1 "|" }')$(cksum $InputFileSrc | awk '{ print $1 }')
/tmp/dd/file|2|3115234434
# printf "/tmp/dd/file|2|3115234434" | awk -F"[ /]" '{ print $NF }'
file|2|3115234434
#