diff options
Diffstat (limited to 'gemfeed/2021-06-05-gemtexter-one-bash-script-to-rule-it-all.html')
| -rw-r--r-- | gemfeed/2021-06-05-gemtexter-one-bash-script-to-rule-it-all.html | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/gemfeed/2021-06-05-gemtexter-one-bash-script-to-rule-it-all.html b/gemfeed/2021-06-05-gemtexter-one-bash-script-to-rule-it-all.html index 45f35835..926335cd 100644 --- a/gemfeed/2021-06-05-gemtexter-one-bash-script-to-rule-it-all.html +++ b/gemfeed/2021-06-05-gemtexter-one-bash-script-to-rule-it-all.html @@ -140,7 +140,7 @@ http://www.gnu.org/software/src-highlite --> <br /> <span>ShellCheck, a shell script analysis tool written in Haskell, is run on Gemtexter ensuring that all code is acceptable. I am pretty impressed with what ShellCheck found. </span><br /> <br /> -<span>It, for example, detected "some_command | while read var; do ...; done" loops and hinted that these create a new subprocess for the while part. The result is that all variable modifications taking place in the while-subprocess won't reflect the primary Bash process. ShellSheck then recommended rewriting the loop so that no subprocess is spawned as "while read -r var; do ...; done < <(some_command)". ShellCheck also pointed out to add a "-r" to "read"; otherwise, there could be an issue with backspaces in the loop data.</span><br /> +<span>It, for example, detected "some_command | while read var; do ...; done" loops and hinted that these create a new subprocess for the while part. The result is that all variable modifications taking place in the while-subprocess won't reflect the primary Bash process. ShellSheck then recommended rewriting the loop so that no subprocess is spawned as "while read -r var; do ...; done < <(some_command)". ShellCheck also pointed out to add a "-r" to "read"; otherwise, there could be an issue with backspaces in the loop data.</span><br /> <br /> <span>Furthermore, ShellCheck recommended many more improvements. Declaration of unused variables and missing variable and string quotations were the most common ones. ShellSheck immensely helped to improve the robustness of the script.</span><br /> <br /> |