Forum Discussion
Michaelyang
Cirrostratus
Cirrostratusloop for iCall
Hello,
I created an icall script to automatically delete files
ex. When the number of files > 5, the oldest file can be deleted until 5 files are left
Here is my code:
modify script backup_script {
app-service none
definition {
set total [exec ls -l /var/local/ucs | grep "ucs$" | wc -l]
set old "[exec ls -tr /var/local/ucs | grep "ucs$" | head -1]"
if { $total > 5 } then {
exec rm -f /var/local/ucs/$old
} else {
}
}
description none
events none
}I thought it would work, but when I tested adding 10 files, I found that running the script once only deleted one file ...... Couldn't delete 5 files, couldn't reach my requirement...
Please tell me how I can improve it
Any help is appreciate.
Hi Michaelyang,
check the iCall script below...
sys icall script UCS_CleanUp { app-service none definition { eval { exec ls -t } [glob /var/local/ucs/*.ucs] { | awk "NR>5" | xargs -d "\n" rm -f } } description none events none } sys icall handler periodic UCS_CleanUp { interval 3600 script UCS_CleanUp }The [glob] command is used as a workaround for [exec]'s missing ability to deal with "*" matches. It passes the output of [glob] to "ls -t", to sort the results based on their creation time (newest first). "awk NR>5" will then be used to skip the first 5 results. The remaining results will then become passed to the "xargs -d \n"command to filter any new lines and then pass the remaining string to "rm -f" to delete the obsolete files.
[itacs@kw-f5-dev:Active:Standalone] ucs # ls -t /var/local/ucs/*.ucs /var/local/ucs/j_0_days_old.ucs /var/local/ucs/r_2_days_old.ucs /var/local/ucs/d_4_days_old.ucs /var/local/ucs/x_6_days_old.ucs /var/local/ucs/g_1_days_old.ucs /var/local/ucs/e_3_days_old.ucs /var/local/ucs/x_5_days_old.ucs [itacs@kw-f5-dev:Active:Standalone] ucs # tclsh % % exec ls -t /var/local/ucs/*.ucs ls: cannot access /var/local/ucs/*.ucs: No such file or directory % % glob "/var/local/ucs/*.ucs" /var/local/ucs/g_1_days_old.ucs /var/local/ucs/x_7_days_old.ucs /var/local/ucs/x_6_days_old.ucs /var/local/ucs/j_0_days_old.ucs /var/local/ucs/e_3_days_old.ucs /var/local/ucs/r_2_days_old.ucs /var/local/ucs/x_5_days_old.ucs /var/local/ucs/d_4_days_old.ucs % % eval { exec ls -t } [glob "/var/local/ucs/*.ucs"] /var/local/ucs/j_0_days_old.ucs /var/local/ucs/g_1_days_old.ucs /var/local/ucs/r_2_days_old.ucs /var/local/ucs/e_3_days_old.ucs /var/local/ucs/d_4_days_old.ucs /var/local/ucs/x_5_days_old.ucs /var/local/ucs/x_6_days_old.ucs /var/local/ucs/x_7_days_old.ucs % % eval { exec ls -t } [glob "/var/local/ucs/*.ucs"] { | awk "NR>5" } /var/local/ucs/x_5_days_old.ucs /var/local/ucs/x_6_days_old.ucs /var/local/ucs/x_7_days_old.ucs % % eval { exec ls -t } [glob "/var/local/ucs/*.ucs"] { | awk "NR>5" | xargs -d "\n" rm -f } % ^C [itacs@kw-f5-dev:Active:Standalone] ucs # ls -t /var/local/ucs/*.ucs /var/local/ucs/j_0_days_old.ucs /var/local/ucs/r_2_days_old.ucs /var/local/ucs/d_4_days_old.ucs /var/local/ucs/g_1_days_old.ucs /var/local/ucs/e_3_days_old.ucs [itacs@kw-f5-dev:Active:Standalone] ucs #No need for a loop... 😉
Cheers, Kai
- Kai_Wilke
MVP
removed...
- Kai_Wilke
Hi Michaelyang,
check the iCall script below...
sys icall script UCS_CleanUp { app-service none definition { eval { exec ls -t } [glob /var/local/ucs/*.ucs] { | awk "NR>5" | xargs -d "\n" rm -f } } description none events none } sys icall handler periodic UCS_CleanUp { interval 3600 script UCS_CleanUp }The [glob] command is used as a workaround for [exec]'s missing ability to deal with "*" matches. It passes the output of [glob] to "ls -t", to sort the results based on their creation time (newest first). "awk NR>5" will then be used to skip the first 5 results. The remaining results will then become passed to the "xargs -d \n"command to filter any new lines and then pass the remaining string to "rm -f" to delete the obsolete files.
[itacs@kw-f5-dev:Active:Standalone] ucs # ls -t /var/local/ucs/*.ucs /var/local/ucs/j_0_days_old.ucs /var/local/ucs/r_2_days_old.ucs /var/local/ucs/d_4_days_old.ucs /var/local/ucs/x_6_days_old.ucs /var/local/ucs/g_1_days_old.ucs /var/local/ucs/e_3_days_old.ucs /var/local/ucs/x_5_days_old.ucs [itacs@kw-f5-dev:Active:Standalone] ucs # tclsh % % exec ls -t /var/local/ucs/*.ucs ls: cannot access /var/local/ucs/*.ucs: No such file or directory % % glob "/var/local/ucs/*.ucs" /var/local/ucs/g_1_days_old.ucs /var/local/ucs/x_7_days_old.ucs /var/local/ucs/x_6_days_old.ucs /var/local/ucs/j_0_days_old.ucs /var/local/ucs/e_3_days_old.ucs /var/local/ucs/r_2_days_old.ucs /var/local/ucs/x_5_days_old.ucs /var/local/ucs/d_4_days_old.ucs % % eval { exec ls -t } [glob "/var/local/ucs/*.ucs"] /var/local/ucs/j_0_days_old.ucs /var/local/ucs/g_1_days_old.ucs /var/local/ucs/r_2_days_old.ucs /var/local/ucs/e_3_days_old.ucs /var/local/ucs/d_4_days_old.ucs /var/local/ucs/x_5_days_old.ucs /var/local/ucs/x_6_days_old.ucs /var/local/ucs/x_7_days_old.ucs % % eval { exec ls -t } [glob "/var/local/ucs/*.ucs"] { | awk "NR>5" } /var/local/ucs/x_5_days_old.ucs /var/local/ucs/x_6_days_old.ucs /var/local/ucs/x_7_days_old.ucs % % eval { exec ls -t } [glob "/var/local/ucs/*.ucs"] { | awk "NR>5" | xargs -d "\n" rm -f } % ^C [itacs@kw-f5-dev:Active:Standalone] ucs # ls -t /var/local/ucs/*.ucs /var/local/ucs/j_0_days_old.ucs /var/local/ucs/r_2_days_old.ucs /var/local/ucs/d_4_days_old.ucs /var/local/ucs/g_1_days_old.ucs /var/local/ucs/e_3_days_old.ucs [itacs@kw-f5-dev:Active:Standalone] ucs #No need for a loop... 😉
Cheers, Kai
- Michaelyang
Hi Kai_Wilke,
Thanks for your help.
