Adding size of files using shell script

up vote
2
down vote

favorite

I want to add and echo the sum of several files using shell script. How do I start?
I have a list of them like that:

$ stat /etc/*.conf | grep Size | cut -f4 -d' '

123

456

789

101112

edited Nov 21 at 7:16

muru

35.3k582155

asked Nov 21 at 7:13

C. Cristi

1647

5

you don't we simply use du?
– msp9011
Nov 21 at 7:30

1

@msp9011, du will calculate also subdirectories
– Romeo Ninov
Nov 21 at 7:39

1

@RomeoNinov here we are checking only files...du -b /etc/*.conf
– msp9011
Nov 21 at 8:42

@msp9011 Not if there is a directory matching the pattern. It's unlikely but not impossible.
– BlackJack
Nov 21 at 17:55

@msp9011 due to block sizes, etc, disk usage is not the same as total file size.
– OrangeDog
Nov 22 at 11:45

add a comment |

up vote
2
down vote

favorite

I want to add and echo the sum of several files using shell script. How do I start?
I have a list of them like that:

$ stat /etc/*.conf | grep Size | cut -f4 -d' '

123

456

789

101112

edited Nov 21 at 7:16

muru

35.3k582155

asked Nov 21 at 7:13

C. Cristi

1647

5

you don't we simply use du?
– msp9011
Nov 21 at 7:30

1

@msp9011, du will calculate also subdirectories
– Romeo Ninov
Nov 21 at 7:39

1

@RomeoNinov here we are checking only files...du -b /etc/*.conf
– msp9011
Nov 21 at 8:42

@msp9011 Not if there is a directory matching the pattern. It's unlikely but not impossible.
– BlackJack
Nov 21 at 17:55

@msp9011 due to block sizes, etc, disk usage is not the same as total file size.
– OrangeDog
Nov 22 at 11:45

add a comment |

up vote
2
down vote

favorite

I want to add and echo the sum of several files using shell script. How do I start?
I have a list of them like that:

$ stat /etc/*.conf | grep Size | cut -f4 -d' '

123

456

789

101112

edited Nov 21 at 7:16

muru

35.3k582155

asked Nov 21 at 7:13

C. Cristi

1647

I want to add and echo the sum of several files using shell script. How do I start?
I have a list of them like that:

$ stat /etc/*.conf | grep Size | cut -f4 -d' '

123

456

789

101112

shell-script shell

edited Nov 21 at 7:16

muru

35.3k582155

asked Nov 21 at 7:13

C. Cristi

1647

edited Nov 21 at 7:16

muru

35.3k582155

asked Nov 21 at 7:13

C. Cristi

1647

edited Nov 21 at 7:16

muru

35.3k582155

edited Nov 21 at 7:16

muru

35.3k582155

edited Nov 21 at 7:16

muru

35.3k582155

asked Nov 21 at 7:13

C. Cristi

1647

asked Nov 21 at 7:13

C. Cristi

1647

asked Nov 21 at 7:13

C. Cristi

1647

5

you don't we simply use du?
– msp9011
Nov 21 at 7:30

1

@msp9011, du will calculate also subdirectories
– Romeo Ninov
Nov 21 at 7:39

1

@RomeoNinov here we are checking only files...du -b /etc/*.conf
– msp9011
Nov 21 at 8:42

@msp9011 Not if there is a directory matching the pattern. It's unlikely but not impossible.
– BlackJack
Nov 21 at 17:55

@msp9011 due to block sizes, etc, disk usage is not the same as total file size.
– OrangeDog
Nov 22 at 11:45

add a comment |

5

you don't we simply use du?
– msp9011
Nov 21 at 7:30

1

@msp9011, du will calculate also subdirectories
– Romeo Ninov
Nov 21 at 7:39

1

@RomeoNinov here we are checking only files...du -b /etc/*.conf
– msp9011
Nov 21 at 8:42

@msp9011 Not if there is a directory matching the pattern. It's unlikely but not impossible.
– BlackJack
Nov 21 at 17:55

@msp9011 due to block sizes, etc, disk usage is not the same as total file size.
– OrangeDog
Nov 22 at 11:45

you don't we simply use du?
– msp9011
Nov 21 at 7:30

@msp9011, du will calculate also subdirectories
– Romeo Ninov
Nov 21 at 7:39

@RomeoNinov here we are checking only files...du -b /etc/*.conf
– msp9011
Nov 21 at 8:42

@msp9011 Not if there is a directory matching the pattern. It's unlikely but not impossible.
– BlackJack
Nov 21 at 17:55

@msp9011 due to block sizes, etc, disk usage is not the same as total file size.
– OrangeDog
Nov 22 at 11:45

add a comment |

5 Answers
5

active

oldest

votes

up vote
2
down vote

accepted

You can do this …

total=0

for s in $(stat /etc/*.conf | grep Size | cut -f4 -d' '); do 

    total=$(expr $total + $s)

done

answered Nov 21 at 7:20

Red Cricket

1,20431731

Thanks! and if I want to output it in a file I do: echo total > my_file.txt, right? And what if I want to output the errors too what do I do then?
– C. Cristi
Nov 21 at 7:25

4

Don't use grep or cut on stat output. stat has format flags (%s) for this
– ohno
Nov 21 at 10:20

5

Also, 'Size' is likely to assume an English or "C " locale.
– xenoid
Nov 21 at 13:43

add a comment |

up vote
12
down vote

stat -c "%s" /etc/*.conf|paste -sd+|bc -l

answered Nov 21 at 7:22

Ipor Sircer

10.3k11024

Although effectively the same as @xenoid's solution, I prefer this because 1) less rigamarole with format strings and remembering to append the final "0"; and 2) while it costs a process, it hews closer to the "one thing well" philosophy. It's also a useful use of the (perhaps underappreciated) paste utility that can be applied to a larger class of problems: separating a bunch of stuff with a delimiter. Another example is "unwrapping" (removing the line breaks from) a text file: paste -sd$' ' inputfile.
– TheDudeAbides
Nov 21 at 23:20

1

@TheDudeAbides, all those things are true about awk. And it use one process less. And IMO is much more readable
– Romeo Ninov
Nov 22 at 10:29

add a comment |

up vote
12
down vote

Also something like can do the work (with awk)

stat -c "%s" /etc/*.conf|awk '{s+=$1} END {print s}'

answered Nov 21 at 7:35

Romeo Ninov

5,02431627

add a comment |

up vote
10
down vote

With `bc`

{ stat -c '%s+' /etc/*.conf ; echo 0 ; } | bc

The stat format adds a + sign and a continuation character after each size

a 0 is appended at the end to close the dangling final +

answered Nov 21 at 10:06

xenoid

2,5981724

add a comment |

up vote
7
down vote

The most straightforward way is to use du -bc:

$ du -bc /etc/*.conf

5139    /etc/man_db.conf

393     /etc/nsswitch.conf

5532    total

If you need to extract only the number of bytes, pipe the output to awk:

$ du -bc /etc/*.conf | awk 'END { print $1 }'

5532

answered Nov 21 at 8:43

Martin Frodl

893

Hope ... OP doesn't require the grand total size of all files...
– msp9011
Nov 21 at 8:55

1

Also note that this gives disk usage, not apparent sizes of the files. --apparent-size option may be needed to use apparent sizes.
– Ruslan
Nov 21 at 17:04

@Ruslan The awk line also strips off the total
– Izkata
Nov 21 at 18:09

@Izkata oh, indeed, didn't notice this bit.
– Ruslan
Nov 21 at 18:49

add a comment |

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5 Answers
5

active

oldest

votes

5 Answers
5

active

oldest

votes

up vote
2
down vote

accepted

You can do this …

total=0

for s in $(stat /etc/*.conf | grep Size | cut -f4 -d' '); do 

    total=$(expr $total + $s)

done

answered Nov 21 at 7:20

Red Cricket

1,20431731

Thanks! and if I want to output it in a file I do: echo total > my_file.txt, right? And what if I want to output the errors too what do I do then?
– C. Cristi
Nov 21 at 7:25

4

Don't use grep or cut on stat output. stat has format flags (%s) for this
– ohno
Nov 21 at 10:20

5

Also, 'Size' is likely to assume an English or "C " locale.
– xenoid
Nov 21 at 13:43

add a comment |

up vote
2
down vote

accepted

You can do this …

total=0

for s in $(stat /etc/*.conf | grep Size | cut -f4 -d' '); do 

    total=$(expr $total + $s)

done

answered Nov 21 at 7:20

Red Cricket

1,20431731

Thanks! and if I want to output it in a file I do: echo total > my_file.txt, right? And what if I want to output the errors too what do I do then?
– C. Cristi
Nov 21 at 7:25

4

Don't use grep or cut on stat output. stat has format flags (%s) for this
– ohno
Nov 21 at 10:20

5

Also, 'Size' is likely to assume an English or "C " locale.
– xenoid
Nov 21 at 13:43

add a comment |

up vote
2
down vote

accepted

You can do this …

total=0

for s in $(stat /etc/*.conf | grep Size | cut -f4 -d' '); do 

    total=$(expr $total + $s)

done

answered Nov 21 at 7:20

Red Cricket

1,20431731

You can do this …

total=0

for s in $(stat /etc/*.conf | grep Size | cut -f4 -d' '); do 

    total=$(expr $total + $s)

done

answered Nov 21 at 7:20

Red Cricket

1,20431731

answered Nov 21 at 7:20

Red Cricket

1,20431731

answered Nov 21 at 7:20

Red Cricket

1,20431731

answered Nov 21 at 7:20

Red Cricket

1,20431731

Thanks! and if I want to output it in a file I do: echo total > my_file.txt, right? And what if I want to output the errors too what do I do then?
– C. Cristi
Nov 21 at 7:25

4

Don't use grep or cut on stat output. stat has format flags (%s) for this
– ohno
Nov 21 at 10:20

5

Also, 'Size' is likely to assume an English or "C " locale.
– xenoid
Nov 21 at 13:43

add a comment |

Thanks! and if I want to output it in a file I do: echo total > my_file.txt, right? And what if I want to output the errors too what do I do then?
– C. Cristi
Nov 21 at 7:25

4

Don't use grep or cut on stat output. stat has format flags (%s) for this
– ohno
Nov 21 at 10:20

5

Also, 'Size' is likely to assume an English or "C " locale.
– xenoid
Nov 21 at 13:43

Thanks! and if I want to output it in a file I do: echo total > my_file.txt, right? And what if I want to output the errors too what do I do then?
– C. Cristi
Nov 21 at 7:25

Don't use grep or cut on stat output. stat has format flags (%s) for this
– ohno
Nov 21 at 10:20

Also, 'Size' is likely to assume an English or "C " locale.
– xenoid
Nov 21 at 13:43

add a comment |

up vote
12
down vote

stat -c "%s" /etc/*.conf|paste -sd+|bc -l

answered Nov 21 at 7:22

Ipor Sircer

10.3k11024

Although effectively the same as @xenoid's solution, I prefer this because 1) less rigamarole with format strings and remembering to append the final "0"; and 2) while it costs a process, it hews closer to the "one thing well" philosophy. It's also a useful use of the (perhaps underappreciated) paste utility that can be applied to a larger class of problems: separating a bunch of stuff with a delimiter. Another example is "unwrapping" (removing the line breaks from) a text file: paste -sd$' ' inputfile.
– TheDudeAbides
Nov 21 at 23:20

1

@TheDudeAbides, all those things are true about awk. And it use one process less. And IMO is much more readable
– Romeo Ninov
Nov 22 at 10:29

add a comment |

up vote
12
down vote

stat -c "%s" /etc/*.conf|paste -sd+|bc -l

answered Nov 21 at 7:22

Ipor Sircer

10.3k11024

Although effectively the same as @xenoid's solution, I prefer this because 1) less rigamarole with format strings and remembering to append the final "0"; and 2) while it costs a process, it hews closer to the "one thing well" philosophy. It's also a useful use of the (perhaps underappreciated) paste utility that can be applied to a larger class of problems: separating a bunch of stuff with a delimiter. Another example is "unwrapping" (removing the line breaks from) a text file: paste -sd$' ' inputfile.
– TheDudeAbides
Nov 21 at 23:20

1

@TheDudeAbides, all those things are true about awk. And it use one process less. And IMO is much more readable
– Romeo Ninov
Nov 22 at 10:29

add a comment |

up vote
12
down vote

stat -c "%s" /etc/*.conf|paste -sd+|bc -l

answered Nov 21 at 7:22

Ipor Sircer

10.3k11024

stat -c "%s" /etc/*.conf|paste -sd+|bc -l

answered Nov 21 at 7:22

Ipor Sircer

10.3k11024

answered Nov 21 at 7:22

Ipor Sircer

10.3k11024

answered Nov 21 at 7:22

Ipor Sircer

10.3k11024

answered Nov 21 at 7:22

Ipor Sircer

10.3k11024

Although effectively the same as @xenoid's solution, I prefer this because 1) less rigamarole with format strings and remembering to append the final "0"; and 2) while it costs a process, it hews closer to the "one thing well" philosophy. It's also a useful use of the (perhaps underappreciated) paste utility that can be applied to a larger class of problems: separating a bunch of stuff with a delimiter. Another example is "unwrapping" (removing the line breaks from) a text file: paste -sd$' ' inputfile.
– TheDudeAbides
Nov 21 at 23:20

1

@TheDudeAbides, all those things are true about awk. And it use one process less. And IMO is much more readable
– Romeo Ninov
Nov 22 at 10:29

add a comment |

Although effectively the same as @xenoid's solution, I prefer this because 1) less rigamarole with format strings and remembering to append the final "0"; and 2) while it costs a process, it hews closer to the "one thing well" philosophy. It's also a useful use of the (perhaps underappreciated) paste utility that can be applied to a larger class of problems: separating a bunch of stuff with a delimiter. Another example is "unwrapping" (removing the line breaks from) a text file: paste -sd$' ' inputfile.
– TheDudeAbides
Nov 21 at 23:20

1

@TheDudeAbides, all those things are true about awk. And it use one process less. And IMO is much more readable
– Romeo Ninov
Nov 22 at 10:29

Although effectively the same as @xenoid's solution, I prefer this because 1) less rigamarole with format strings and remembering to append the final "0"; and 2) while it costs a process, it hews closer to the "one thing well" philosophy. It's also a useful use of the (perhaps underappreciated) paste utility that can be applied to a larger class of problems: separating a bunch of stuff with a delimiter. Another example is "unwrapping" (removing the line breaks from) a text file: paste -sd$' ' inputfile.
– TheDudeAbides
Nov 21 at 23:20

@TheDudeAbides, all those things are true about awk. And it use one process less. And IMO is much more readable
– Romeo Ninov
Nov 22 at 10:29

add a comment |

up vote
12
down vote

Also something like can do the work (with awk)

stat -c "%s" /etc/*.conf|awk '{s+=$1} END {print s}'

answered Nov 21 at 7:35

Romeo Ninov

5,02431627

add a comment |

up vote
12
down vote

Also something like can do the work (with awk)

stat -c "%s" /etc/*.conf|awk '{s+=$1} END {print s}'

answered Nov 21 at 7:35

Romeo Ninov

5,02431627

add a comment |

up vote
12
down vote

Also something like can do the work (with awk)

stat -c "%s" /etc/*.conf|awk '{s+=$1} END {print s}'

answered Nov 21 at 7:35

Romeo Ninov

5,02431627

Also something like can do the work (with awk)

stat -c "%s" /etc/*.conf|awk '{s+=$1} END {print s}'

answered Nov 21 at 7:35

Romeo Ninov

5,02431627

answered Nov 21 at 7:35

Romeo Ninov

5,02431627

answered Nov 21 at 7:35

Romeo Ninov

5,02431627

answered Nov 21 at 7:35

Romeo Ninov

5,02431627

add a comment |

up vote
10
down vote

With `bc`

{ stat -c '%s+' /etc/*.conf ; echo 0 ; } | bc

The stat format adds a + sign and a continuation character after each size

a 0 is appended at the end to close the dangling final +

answered Nov 21 at 10:06

xenoid

2,5981724

add a comment |

up vote
10
down vote

With `bc`

{ stat -c '%s+' /etc/*.conf ; echo 0 ; } | bc

The stat format adds a + sign and a continuation character after each size

a 0 is appended at the end to close the dangling final +

answered Nov 21 at 10:06

xenoid

2,5981724

add a comment |

up vote
10
down vote

With `bc`

{ stat -c '%s+' /etc/*.conf ; echo 0 ; } | bc

The stat format adds a + sign and a continuation character after each size

a 0 is appended at the end to close the dangling final +

answered Nov 21 at 10:06

xenoid

2,5981724

With `bc`

{ stat -c '%s+' /etc/*.conf ; echo 0 ; } | bc

The stat format adds a + sign and a continuation character after each size

a 0 is appended at the end to close the dangling final +

answered Nov 21 at 10:06

xenoid

2,5981724

answered Nov 21 at 10:06

xenoid

2,5981724

answered Nov 21 at 10:06

xenoid

2,5981724

answered Nov 21 at 10:06

xenoid

2,5981724

add a comment |

up vote
7
down vote

The most straightforward way is to use du -bc:

$ du -bc /etc/*.conf

5139    /etc/man_db.conf

393     /etc/nsswitch.conf

5532    total

If you need to extract only the number of bytes, pipe the output to awk:

$ du -bc /etc/*.conf | awk 'END { print $1 }'

5532

answered Nov 21 at 8:43

Martin Frodl

893

Hope ... OP doesn't require the grand total size of all files...
– msp9011
Nov 21 at 8:55

1

Also note that this gives disk usage, not apparent sizes of the files. --apparent-size option may be needed to use apparent sizes.
– Ruslan
Nov 21 at 17:04

@Ruslan The awk line also strips off the total
– Izkata
Nov 21 at 18:09

@Izkata oh, indeed, didn't notice this bit.
– Ruslan
Nov 21 at 18:49

add a comment |

up vote
7
down vote

The most straightforward way is to use du -bc:

$ du -bc /etc/*.conf

5139    /etc/man_db.conf

393     /etc/nsswitch.conf

5532    total

If you need to extract only the number of bytes, pipe the output to awk:

$ du -bc /etc/*.conf | awk 'END { print $1 }'

5532

answered Nov 21 at 8:43

Martin Frodl

893

Hope ... OP doesn't require the grand total size of all files...
– msp9011
Nov 21 at 8:55

1

Also note that this gives disk usage, not apparent sizes of the files. --apparent-size option may be needed to use apparent sizes.
– Ruslan
Nov 21 at 17:04

@Ruslan The awk line also strips off the total
– Izkata
Nov 21 at 18:09

@Izkata oh, indeed, didn't notice this bit.
– Ruslan
Nov 21 at 18:49

add a comment |

up vote
7
down vote

The most straightforward way is to use du -bc:

$ du -bc /etc/*.conf

5139    /etc/man_db.conf

393     /etc/nsswitch.conf

5532    total

If you need to extract only the number of bytes, pipe the output to awk:

$ du -bc /etc/*.conf | awk 'END { print $1 }'

5532

answered Nov 21 at 8:43

Martin Frodl

893

The most straightforward way is to use du -bc:

$ du -bc /etc/*.conf

5139    /etc/man_db.conf

393     /etc/nsswitch.conf

5532    total

If you need to extract only the number of bytes, pipe the output to awk:

$ du -bc /etc/*.conf | awk 'END { print $1 }'

5532

answered Nov 21 at 8:43

Martin Frodl

893

answered Nov 21 at 8:43

Martin Frodl

893

answered Nov 21 at 8:43

Martin Frodl

893

answered Nov 21 at 8:43

Martin Frodl

893

Hope ... OP doesn't require the grand total size of all files...
– msp9011
Nov 21 at 8:55

1

Also note that this gives disk usage, not apparent sizes of the files. --apparent-size option may be needed to use apparent sizes.
– Ruslan
Nov 21 at 17:04

@Ruslan The awk line also strips off the total
– Izkata
Nov 21 at 18:09

@Izkata oh, indeed, didn't notice this bit.
– Ruslan
Nov 21 at 18:49

add a comment |

Hope ... OP doesn't require the grand total size of all files...
– msp9011
Nov 21 at 8:55

1

Also note that this gives disk usage, not apparent sizes of the files. --apparent-size option may be needed to use apparent sizes.
– Ruslan
Nov 21 at 17:04

@Ruslan The awk line also strips off the total
– Izkata
Nov 21 at 18:09

@Izkata oh, indeed, didn't notice this bit.
– Ruslan
Nov 21 at 18:49

Hope ... OP doesn't require the grand total size of all files...
– msp9011
Nov 21 at 8:55

Also note that this gives disk usage, not apparent sizes of the files. --apparent-size option may be needed to use apparent sizes.
– Ruslan
Nov 21 at 17:04

@Ruslan The awk line also strips off the total
– Izkata
Nov 21 at 18:09

@Izkata oh, indeed, didn't notice this bit.
– Ruslan
Nov 21 at 18:49

add a comment |

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