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Why you would want to use anything instead of vi eludes me. ;-))

I suppose it is because gvim - graphically challenged vi-lookalike - detaches itself from the shell it is run in. Therefore the...

Hi.

The dateutils suite contains a code that can add date/time durations: dadd. However, the format of the durations needs to be not in a form like 1:51:59, but rather 1h51m59s. That can be done...

Note that I used a Korn shell in post #2 and itkamaraj used bash in post #3. If you use bash, you will need to strip leading zeros from minutes and seconds values 08 and 09. The Korn shell treats...

#!/bin/bash

list="1:11:00 0:13:03 2:06:45"

h=0
m=0
s=0
for x in ${list}
do
echo ${x}
h=$(( h + ${x%%:*} ))
Min=$(echo ${x%:*} | cut -d: -f2)
m=$(( m +...

Maybe something more like:
#!/bin/ksh
list="1:11:59 0:13:58 2:06:57 1:38:56 1:36:55 0:06:54 0:31:53 0:33:52 0:38:51 0:44:50"

h=0
m=0
s=0
while IFS=':' read H M S
do
h=$(( h + H )) #...

Don't confuse the shell variable expansion substitution syntax with regular expressions because they are (just as confusing at first) and quite different.

For the full list of possibilities have...

...this is an issue with shell quoting.

In my original reply which mistakenly used double quotes, the "$?" was returning the exit code of whatever command was run prior, not of the rsh (the "$?"...