1. Shell Programming and Scripting

Can I create a function to return non-interger value in shell script? for example, function getcommand () { echo "read command" read command echo $command } command=$(getcommand) I tried to do something as above. The statement echo "read command" does not show up. ... (5 Replies)

2. UNIX for Dummies Questions & Answers

Is there a command where I can pipe my grep into it and it will output it with spaces rather than returns? Example I want to turn prompt$ grep blah file blah blah into this prompt$ grep blah file | someCommand blah blah (1 Reply)

3. Shell Programming and Scripting

Hi I have a small function which returns a wrong value. The function tries to make a connection to oracle database and tries to get the open_mode of the database in the variable status. However when a database is down the value of the status column is set to READWRITE i am not sure why. I... (0 Replies)

4. Shell Programming and Scripting

Hi all, I am trying to grep a .txt file for a word. When I hit enter, it returns back to $ The file is 4155402 in size and is named in this way: *_eveningtimes_done_log.txt I use this command, being in the same directory as the file: grep -i "invalid" *_eveningtimes_done_log.txt ... (16 Replies)

5. UNIX for Dummies Questions & Answers

Sometimes I observe this in gdb: (gdb) br my_function Breakpoint .. at 0x...: file ..., line ... i.e., "my_function" does exist in the current executable. however, dlsym does not find it: (gdb) p dlsym(0,"my_function") $6 = 0 This is a C program; dlsym does find other defined functions and... (2 Replies)

6. Shell Programming and Scripting

#/bin/sh ..... #convert memory to MB let "mmsize_a= ($mmsize)/256" let "mminuse_a= ($mminuse)/256" let "mmfree_a= ($mmsize_a -$mminuse_a)" let "mmfreepercent= (($mmfree_a)/($mmsize_a))*100" # #format output echo "\n\n######################" >>$sndFile echo "\n$sysName Total Memory usage"... (3 Replies)

7. Shell Programming and Scripting

I need help to store the value returned from the function to one variable and then use that variable. PREVIOUS_DATE_FUNCTION() { date '+%m %d %Y' | { read MONTH DAY YEAR DAY=`expr "$DAY" - 1` case "$DAY" in 0) MONTH=`expr "$MONTH" - 1` case... (1 Reply)

8. Shell Programming and Scripting

Hi, I need to return a value from the function. the value will be the output from cat command which uses random fucntion. #!/bin/ksh hello() { var1=$(`cat /dev/urandom| tr -dc 'a-zA-Z0-9-!%&()*+,-/:;<=>?_'|fold -w 10 | head -n 1`) echo "value is" var1 return var1 } hello var=$?... (2 Replies)

9. Shell Programming and Scripting

This returns 0 even when it does not delete any files. Is it because -print returns 0? RETVAL=$? Docs_Backups=/media/andy/MAXTOR_SDB1/Ubuntu_Mate_18.04/Documents_Backups/ Scripts_Backups=/media/andy/MAXTOR_SDB1/Ubuntu_Mate_18.04/Script_Backups/ # create some old files #touch -d 20120101... (4 Replies)