Thread: bash script output redirect

hello!

have single "backup.sh" script containing multiple rsync commands:

code:

#!/bin/bash    echo $(date)    #data  rsync -avrp ~/data/ /backup/data/    #media  rsync -avrp ~/media/ /backup/media/    #email  rsync -avrp ~/email/ /backup/email/    read    exit

what trying do, specifically, place command inside script, itself, direct (sequential) output of 3 rsync commands (as echo $(date)) both terminal , (date-stamped) log file - akin to:

code:

tee backup_log_`date +"%m%d%y_%h%m"`

...which (when incorporated - in various ways - script - without "|") directs output terminal but generates empty date-stamped log file.

or

code:

> backup_log_`date +"%m%d%y_%h%m"`

...which (when incorporated - in various ways - script) closes terminal , generates empty date-stamped log file.

have toyed adding "> backup_log" (and ">> backup_log") or "tee backup_log" etc after each command - however, struck me inefficient.

have constructed line...

code:

$ ./backup.sh | tee backup_log_`date +"%m%d%y_%h%m"`

...in terminal - , within desktop launcher (though not date stamp work launcher, using sh -c), yield trying yield (i.e. output both terminal , (dated) log). however, i'd rather have functionality incorporated script, - if feasible....

seems need kind of "collect / consolidate / redirect output of multiple commands within bash script" insight! perhaps there bash "function" gather commands , collect output (sort of javascript-esque)?

guidance!

you are, in fact, correct. there way "collect / consolidate / redirect output of multiple commands within bash script".

putting () around bash commands consolidate of output. can test out on terminal, if try running

code:

(date; echo hello, world) > output

you see both output of date , "hello, world" in file output.

can put "(" on first line of shell script , ") > [your output stuff]", , should want.

hope helps, , response isn't late useful!

Forum The Ubuntu Forum Community Ubuntu Official Flavours Support General Help [SOLVED] bash script output redirect

Ubuntu