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Deleting files older than 30 days based on filename as date

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.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty margin-bottom:0;

3

1

If I have a folder of files with their filenames as the date they were created:

2019_04_30.txt
2019_04_15.txt
2019_04_10.txt
2019_02_20.txt
2019_01_05.txt

How would I compare the files names against todays current date

$ date "+%Y_%m_%d"
>>> 2019_04_30

If the file names date is greater than 30 days then delete it. I would expect to end up with

2019_04_30.txt
2019_04_15.txt
2019_04_10.txt

I don't have to follow this naming convention, I could use a more suitable date format.

linux bash filenames date rm

share|improve this question

edited Apr 30 at 14:01

Rui F Ribeiro

42.7k1486146

asked Apr 30 at 10:50

Ari VictorAri Victor

1504

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  You can use YYYY-MM-DD for your filenames, it would help when using "date" functions then
  
  – darxmurf
  Apr 30 at 11:09
  

  
  
  
  

add a comment | 

3

1

If I have a folder of files with their filenames as the date they were created:

2019_04_30.txt
2019_04_15.txt
2019_04_10.txt
2019_02_20.txt
2019_01_05.txt

How would I compare the files names against todays current date

$ date "+%Y_%m_%d"
>>> 2019_04_30

If the file names date is greater than 30 days then delete it. I would expect to end up with

2019_04_30.txt
2019_04_15.txt
2019_04_10.txt

I don't have to follow this naming convention, I could use a more suitable date format.

linux bash filenames date rm

share|improve this question

edited Apr 30 at 14:01

Rui F Ribeiro

42.7k1486146

asked Apr 30 at 10:50

Ari VictorAri Victor

1504

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  You can use YYYY-MM-DD for your filenames, it would help when using "date" functions then
  
  – darxmurf
  Apr 30 at 11:09
  

  
  
  
  

add a comment | 

If I have a folder of files with their filenames as the date they were created:

2019_04_30.txt
2019_04_15.txt
2019_04_10.txt
2019_02_20.txt
2019_01_05.txt

How would I compare the files names against todays current date

$ date "+%Y_%m_%d"
>>> 2019_04_30

If the file names date is greater than 30 days then delete it. I would expect to end up with

2019_04_30.txt
2019_04_15.txt
2019_04_10.txt

I don't have to follow this naming convention, I could use a more suitable date format.

linux bash filenames date rm

share|improve this question

edited Apr 30 at 14:01

Rui F Ribeiro

42.7k1486146

asked Apr 30 at 10:50

Ari VictorAri Victor

1504

2019_04_30.txt
2019_04_15.txt
2019_04_10.txt
2019_02_20.txt
2019_01_05.txt

$ date "+%Y_%m_%d"
>>> 2019_04_30

2019_04_30.txt
2019_04_15.txt
2019_04_10.txt

share|improve this question

edited Apr 30 at 14:01

Rui F Ribeiro

42.7k1486146

asked Apr 30 at 10:50

Ari VictorAri Victor

1504

share|improve this question

edited Apr 30 at 14:01

Rui F Ribeiro

42.7k1486146

asked Apr 30 at 10:50

Ari VictorAri Victor

1504

edited Apr 30 at 14:01

Rui F Ribeiro

42.7k1486146

edited Apr 30 at 14:01

Rui F Ribeiro

42.7k1486146

asked Apr 30 at 10:50

Ari VictorAri Victor

1504

asked Apr 30 at 10:50

Ari VictorAri Victor

1504

2 Answers
2

active

oldest

votes

4

Here is a bash solution.

f30days=$(date +%s --date="-30 days")
for file in 20*.txt; do
 fdate=$(echo $file | tr _ -)
 fsec=$(date +%s --date=$fdate/.txt/)
 if [[ $fsec -lt $f30days ]]; then
 echo "rm $file"
 fi
done

I ended it with "echo rm $file" instead of really deleting your files, this will test the result before.

share|improve this answer

edited Apr 30 at 14:27

αғsнιη

18k103271

answered Apr 30 at 11:07

darxmurfdarxmurf

42411

add a comment | 

4

With zsh:

zmodload zsh/datetime
strftime -s start '%Y_%m_%d.txt' $((EPOCHSECONDS - 30*86400))
echo -E rm -i 2*.txt(e:'[[ $REPLY > $start ]]':)

Remove the echo -E when happy.

On a GNU system and with the GNU shell (bash), you could do something approaching with:

start=$(date -d '30 days ago' +%Y_%m_%d.txt)
list=()
shopt -s nullglob
for file in 2*.txt; do
 [[ $file > $start ]] && list+=("$file")
done
if (( $#list[@] > 0)); then
 echo -E rm -i "$list[@]"
fi

share|improve this answer

edited Apr 30 at 20:17

answered Apr 30 at 11:52

Stéphane ChazelasStéphane Chazelas

317k57602964

add a comment | 

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4

Here is a bash solution.

f30days=$(date +%s --date="-30 days")
for file in 20*.txt; do
 fdate=$(echo $file | tr _ -)
 fsec=$(date +%s --date=$fdate/.txt/)
 if [[ $fsec -lt $f30days ]]; then
 echo "rm $file"
 fi
done

I ended it with "echo rm $file" instead of really deleting your files, this will test the result before.

share|improve this answer

edited Apr 30 at 14:27

αғsнιη

18k103271

answered Apr 30 at 11:07

darxmurfdarxmurf

42411

add a comment | 

4

Here is a bash solution.

f30days=$(date +%s --date="-30 days")
for file in 20*.txt; do
 fdate=$(echo $file | tr _ -)
 fsec=$(date +%s --date=$fdate/.txt/)
 if [[ $fsec -lt $f30days ]]; then
 echo "rm $file"
 fi
done

I ended it with "echo rm $file" instead of really deleting your files, this will test the result before.

share|improve this answer

edited Apr 30 at 14:27

αғsнιη

18k103271

answered Apr 30 at 11:07

darxmurfdarxmurf

42411

add a comment | 

Here is a bash solution.

f30days=$(date +%s --date="-30 days")
for file in 20*.txt; do
 fdate=$(echo $file | tr _ -)
 fsec=$(date +%s --date=$fdate/.txt/)
 if [[ $fsec -lt $f30days ]]; then
 echo "rm $file"
 fi
done

I ended it with "echo rm $file" instead of really deleting your files, this will test the result before.

share|improve this answer

edited Apr 30 at 14:27

αғsнιη

18k103271

answered Apr 30 at 11:07

darxmurfdarxmurf

42411

f30days=$(date +%s --date="-30 days")
for file in 20*.txt; do
 fdate=$(echo $file | tr _ -)
 fsec=$(date +%s --date=$fdate/.txt/)
 if [[ $fsec -lt $f30days ]]; then
 echo "rm $file"
 fi
done

share|improve this answer

edited Apr 30 at 14:27

αғsнιη

18k103271

answered Apr 30 at 11:07

darxmurfdarxmurf

42411

edited Apr 30 at 14:27

αғsнιη

18k103271

edited Apr 30 at 14:27

αғsнιη

18k103271

answered Apr 30 at 11:07

darxmurfdarxmurf

42411

answered Apr 30 at 11:07

darxmurfdarxmurf

42411

4

With zsh:

zmodload zsh/datetime
strftime -s start '%Y_%m_%d.txt' $((EPOCHSECONDS - 30*86400))
echo -E rm -i 2*.txt(e:'[[ $REPLY > $start ]]':)

Remove the echo -E when happy.

On a GNU system and with the GNU shell (bash), you could do something approaching with:

start=$(date -d '30 days ago' +%Y_%m_%d.txt)
list=()
shopt -s nullglob
for file in 2*.txt; do
 [[ $file > $start ]] && list+=("$file")
done
if (( $#list[@] > 0)); then
 echo -E rm -i "$list[@]"
fi

share|improve this answer

edited Apr 30 at 20:17

answered Apr 30 at 11:52

Stéphane ChazelasStéphane Chazelas

317k57602964

add a comment | 

4

With zsh:

zmodload zsh/datetime
strftime -s start '%Y_%m_%d.txt' $((EPOCHSECONDS - 30*86400))
echo -E rm -i 2*.txt(e:'[[ $REPLY > $start ]]':)

Remove the echo -E when happy.

On a GNU system and with the GNU shell (bash), you could do something approaching with:

start=$(date -d '30 days ago' +%Y_%m_%d.txt)
list=()
shopt -s nullglob
for file in 2*.txt; do
 [[ $file > $start ]] && list+=("$file")
done
if (( $#list[@] > 0)); then
 echo -E rm -i "$list[@]"
fi

share|improve this answer

edited Apr 30 at 20:17

answered Apr 30 at 11:52

Stéphane ChazelasStéphane Chazelas

317k57602964

add a comment | 

With zsh:

zmodload zsh/datetime
strftime -s start '%Y_%m_%d.txt' $((EPOCHSECONDS - 30*86400))
echo -E rm -i 2*.txt(e:'[[ $REPLY > $start ]]':)

Remove the echo -E when happy.

On a GNU system and with the GNU shell (bash), you could do something approaching with:

start=$(date -d '30 days ago' +%Y_%m_%d.txt)
list=()
shopt -s nullglob
for file in 2*.txt; do
 [[ $file > $start ]] && list+=("$file")
done
if (( $#list[@] > 0)); then
 echo -E rm -i "$list[@]"
fi

share|improve this answer

edited Apr 30 at 20:17

answered Apr 30 at 11:52

Stéphane ChazelasStéphane Chazelas

317k57602964

zmodload zsh/datetime
strftime -s start '%Y_%m_%d.txt' $((EPOCHSECONDS - 30*86400))
echo -E rm -i 2*.txt(e:'[[ $REPLY > $start ]]':)

start=$(date -d '30 days ago' +%Y_%m_%d.txt)
list=()
shopt -s nullglob
for file in 2*.txt; do
 [[ $file > $start ]] && list+=("$file")
done
if (( $#list[@] > 0)); then
 echo -E rm -i "$list[@]"
fi

share|improve this answer

edited Apr 30 at 20:17

answered Apr 30 at 11:52

Stéphane ChazelasStéphane Chazelas

317k57602964

answered Apr 30 at 11:52

Stéphane ChazelasStéphane Chazelas

317k57602964

answered Apr 30 at 11:52

Stéphane ChazelasStéphane Chazelas

317k57602964